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Relion ®  630 series Power Management PML630/Compact Load-Shedding Solution  Technical Manual

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PML630 Compact Load Shedding Solutionof Substation

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  • Relion 630 series

    Power ManagementPML630/Compact Load-Shedding SolutionTechnical Manual

  • Document ID: 1MRS757256Issued: 2013-10-14

    Revision: DProduct version: 1.2

    Copyright 2013 ABB. All rights reserved

  • CopyrightThis document and parts thereof must not be reproduced or copied without writtenpermission from ABB, and the contents thereof must not be imparted to a thirdparty, nor used for any unauthorized purpose.The software or hardware described in this document is furnished under a licenseand may be used, copied, or disclosed only in accordance with the terms of suchlicense.TrademarksABB and Relion are registered trademarks of the ABB Group. All other brand orproduct names mentioned in this document may be trademarks or registeredtrademarks of their respective holders.WarrantyPlease inquire about the terms of warranty from your nearest ABB representative.

    http://www.abb.com/substationautomation

  • DisclaimerThe data, examples and diagrams in this manual are included solely for the conceptor product description and are not to be deemed as a statement of guaranteedproperties. All persons responsible for applying the equipment addressed in thismanual must satisfy themselves that each intended application is suitable andacceptable, including that any applicable safety or other operational requirementsare complied with. In particular, any risks in applications where a system failure and/or product failure would create a risk for harm to property or persons (including butnot limited to personal injuries or death) shall be the sole responsibility of theperson or entity applying the equipment, and those so responsible are herebyrequested to ensure that all measures are taken to exclude or mitigate such risks.This product has been designed to be connected and communicate data andinformation via a network interface which should be connected to a securenetwork. It is the sole responsibility of the person or entity responsible for networkadministration to ensure a secure connection to the network and to take thenecessary measures (such as, but not limited to, installation of firewalls, applicationof authentication measures, encryption of data, installation of anti virus programs,etc.) to protect the product and the network, its system and interface included,against any kind of security breaches, unauthorized access, interference, intrusion,leakage and/or theft of data or information. ABB is not liable for any such damagesand/or losses.This document has been carefully checked by ABB but deviations cannot becompletely ruled out. In case any errors are detected, the reader is kindly requestedto notify the manufacturer. Other than under explicit contractual commitments, inno event shall ABB be responsible or liable for any loss or damage resulting fromthe use of this manual or the application of the equipment.

  • ConformityThis product complies with the directive of the Council of the EuropeanCommunities on the approximation of the laws of the Member States relating toelectromagnetic compatibility (EMC Directive 2004/108/EC) and concerningelectrical equipment for use within specified voltage limits (Low-voltage directive2006/95/EC). This conformity is the result of tests conducted by ABB inaccordance with the product standards EN 50263 and EN 60255-26 for the EMCdirective, and with the product standards EN 60255-1 and EN 60255-27 for the lowvoltage directive. The product is designed in accordance with the internationalstandards of the IEC 60255 series.

  • Table of contents

    Section 1 Introduction.....................................................................15This manual......................................................................................15Intended audience............................................................................15Product documentation.....................................................................15

    Product documentation set..........................................................15Document revision history...........................................................16Related documentation................................................................17

    Symbols and conventions.................................................................17Symbols.......................................................................................17Document conventions................................................................18Functions, codes and symbols....................................................18

    Section 2 PML630 overview...........................................................21Overview...........................................................................................21Product version history.....................................................................22PCM600 and IED connectivity package version...............................22Local HMI.........................................................................................23

    Display.........................................................................................23LEDs............................................................................................26Keypad........................................................................................26

    Web HMI...........................................................................................27Command buttons.......................................................................28

    Authorization.....................................................................................29Communication.................................................................................30

    Section 3 Basic functions...............................................................31User authentication...........................................................................31

    Authority check ATHCHCK..........................................................31Functionality ..........................................................................31Operation principle.................................................................31Settings..................................................................................32

    Authority status ATHSTAT..........................................................32Function block........................................................................32Functionality...........................................................................33Operation principle ................................................................33Signals....................................................................................33Settings..................................................................................33

    Local human-machine interface LHMI..............................................34Local HMI screen behaviour........................................................34

    Settings..................................................................................34

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    PML630/Compact Load-Shedding Solution 1Technical Manual

  • Local HMI signals........................................................................34Function block........................................................................34Signals....................................................................................35

    Basic part for the LED indication module....................................35Function block........................................................................35Functionality ..........................................................................35Operation principle.................................................................36Signals....................................................................................44Settings..................................................................................44

    Display part for HMI function keys control module......................45Function block........................................................................45Functionality ..........................................................................45Operation principle ................................................................45Signals....................................................................................47Settings..................................................................................47

    IED identifiers TERMINALID............................................................48Functionality................................................................................48Application...................................................................................48

    Customer-specific settings.....................................................48Settings........................................................................................49

    Product information..........................................................................49Functionality................................................................................49Settings........................................................................................49

    Primary system values PRIMVAL.....................................................49Functionality ...............................................................................49Application ..................................................................................50Settings........................................................................................50

    Global phase base values BASEPH.................................................50Functionality................................................................................50Settings........................................................................................51The principles for voltage settings given in pu.............................51

    Parameter setting group handling....................................................51Functionality................................................................................51Setting group handling SETGRPS..............................................52

    Settings..................................................................................52Parameter setting groups ACTVGRP..........................................52

    Function block........................................................................52Signals....................................................................................52Settings..................................................................................53

    Operation principle......................................................................53Application...................................................................................54

    Signal matrix for analog inputs SMAI...............................................55Functionality ...............................................................................55

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    2 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Signal matrix for analog inputs SMAI_20_1.................................55Function block........................................................................55Signals....................................................................................55Settings..................................................................................56

    Signal matrix for analog inputs SMAI_20_2.................................58Signals....................................................................................58Settings..................................................................................59

    Application...................................................................................60Operation principle .....................................................................60

    Measured value expander block MVEXP.........................................63Function block.............................................................................63Functionality ...............................................................................63Operation principle .....................................................................64Application ..................................................................................64Signals.........................................................................................64Settings........................................................................................65

    Fixed signals FXDSIGN....................................................................65Function block.............................................................................65Functionality................................................................................65Operation principle......................................................................65Application...................................................................................66Signals.........................................................................................66Settings........................................................................................66

    Event counter CNTGGIO..................................................................66Function block.............................................................................66Functionality................................................................................66Operation principle......................................................................67

    Reporting................................................................................67Technical data.............................................................................67

    Test mode functionality TESTMODE................................................68Function block.............................................................................68Functionality ...............................................................................68Operation principle......................................................................68Application ..................................................................................69Signals.........................................................................................69Settings........................................................................................70

    Disturbance record DRRDRE...........................................................70Disturbance report DRRDRE.......................................................70

    Function block........................................................................70Functionality...........................................................................70Operation principle.................................................................71Application..............................................................................77Signals....................................................................................79

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    PML630/Compact Load-Shedding Solution 3Technical Manual

  • Settings..................................................................................79Monitored data.......................................................................79

    Analog input signals A1RADR and A2RADR .............................80Function block........................................................................80Signals....................................................................................80Settings..................................................................................81

    Analog input signals A3RADR and A4RADR..............................82Function block........................................................................82Signals....................................................................................82Settings..................................................................................82

    Binary input signals BxRBDR......................................................83Function block........................................................................83Signals....................................................................................84Settings..................................................................................84

    Technical data.............................................................................85Self supervision with internal event list.............................................86

    Functionality................................................................................86Internal error signals INTERRSIG...............................................86

    Function block........................................................................86Signals....................................................................................86Settings..................................................................................86

    Internal event list SELFSUPEVLST.............................................86Settings..................................................................................86

    Operation principle......................................................................87Internal signals.......................................................................88Run-time model......................................................................90

    Application...................................................................................91Technical data.............................................................................92

    Time synchronization........................................................................92Functionality................................................................................92Time synchronization TIMESYNCHGEN.....................................93

    Settings..................................................................................93Time synchronization via SNTP..................................................93

    Settings..................................................................................93Time system, summer time begin DSTBEGIN............................94

    Settings..................................................................................94Time system, summer time ends DSTEND.................................95

    Settings..................................................................................95Time zone from UTC TIMEZONE................................................95

    Settings..................................................................................95Time synchronization via IRIG-B.................................................96

    Settings..................................................................................96Operation principle......................................................................96

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    4 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Real-time clock operation.......................................................97Synchronization alternatives..................................................98

    Application ..................................................................................99Technical data...........................................................................100

    Denial of service.............................................................................100Functionality .............................................................................100Denial of service, frame rate control for front portDOSFRNT.................................................................................100

    Function block......................................................................100Signals..................................................................................101Settings................................................................................101Monitored data.....................................................................101

    Denial of service, frame rate control for LAN1 portDOSLAN1..................................................................................102

    Function block......................................................................102Signals..................................................................................102Settings................................................................................102Monitored data.....................................................................102

    Operation principle ...................................................................103IEC 61850-8-1 communication protocol.........................................103

    Functionality .............................................................................103Communication interfaces and protocols..................................103Application.................................................................................104

    Horizontal communication via GOOSE................................106Settings......................................................................................109Technical data...........................................................................110

    GOOSE receive GOOSEPWRFDRRCV........................................110Function block...........................................................................110Functionality..............................................................................110Signals.......................................................................................110Settings......................................................................................111

    GOOSE receive GOOSEPWRSRCRCV........................................112Function block...........................................................................112Functionality..............................................................................112Signals.......................................................................................113Settings......................................................................................114

    Horizontal communication via GOOSE for interlockingGOOSEINTLKRCV.........................................................................115

    Function block...........................................................................115Signals.......................................................................................115Settings......................................................................................117

    Goose binary receive GOOSEBINRCV..........................................118Function block...........................................................................118Signals.......................................................................................118

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    PML630/Compact Load-Shedding Solution 5Technical Manual

  • Settings......................................................................................119GOOSE function block to receive a double pointGOOSEDPRCV..............................................................................120

    Function block...........................................................................120Functionality..............................................................................120Operation principle ...................................................................120Signals.......................................................................................120Settings......................................................................................121

    GOOSE function block to receive an integer valueGOOSEINTRCV.............................................................................121

    Function block...........................................................................121Functionality .............................................................................121Operation principle ...................................................................121Signals.......................................................................................122Settings......................................................................................122

    GOOSE function block to receive a measurand valueGOOSEMVRCV.............................................................................123

    Function block...........................................................................123Functionality .............................................................................123Operation principle ...................................................................123Signals.......................................................................................123Settings......................................................................................124

    GOOSE function block to receive data sets required for loadshedding GOOSEINTMVRCV........................................................125

    Function block...........................................................................125Functionality..............................................................................125Signals.......................................................................................126Settings......................................................................................127

    GOOSE function block to receive a single point valueGOOSESPRCV..............................................................................127

    Function block...........................................................................127Functionality .............................................................................127Operation principle ...................................................................127Signals.......................................................................................128Settings......................................................................................128

    IEC 61850 generic communication I/O function SPGGIO..............128Function block...........................................................................128Functionality .............................................................................128Operation principle ...................................................................129Application.................................................................................129Signals.......................................................................................129Settings......................................................................................129

    IEC 61850 generic communication I/O functions 16 inputsSP16GGIO.....................................................................................130

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    6 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Function block...........................................................................130Functionality..............................................................................130Operation principle ...................................................................130Signals.......................................................................................131Settings......................................................................................131Monitored data...........................................................................131

    IEC 61850 generic communication I/O function MVGGIO.............132Function block...........................................................................132Functionality..............................................................................132Operation principle ...................................................................133Application.................................................................................133Signals.......................................................................................133Settings......................................................................................133Monitored data...........................................................................134

    IEC 61850 generic communication I/O functions DPGGIO............134Function block...........................................................................134Functionality .............................................................................134Operation principle....................................................................135Signals.......................................................................................135Settings......................................................................................135

    Configurable logic blocks................................................................135Standard configurable logic blocks............................................135

    Functionality.........................................................................135OR function block.................................................................136Inverter function block INVERTER.......................................137PULSETIMER function block ..............................................138Controllable gate function block GATE................................138Exclusive OR function block XOR........................................139Loop delay function block LOOPDELAY..............................140Timer function block TIMERSET..........................................141AND function block ..............................................................142Set-reset memory function block SRMEMORY....................143Reset-set with memory function block RSMEMORY...........144

    Configurable logic Q/T...............................................................145Functionality ........................................................................145ORQT function block ...........................................................145INVERTERQT function block ..............................................146Pulse timer function block PULSTIMERQT..........................146XORQT function block..........................................................147Settable timer function block TIMERSETQT........................148ANDQT function block .........................................................150Set-reset function block SRMEMORYQT.............................151Reset-set function block RSMEMORYQT ...........................152

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    PML630/Compact Load-Shedding Solution 7Technical Manual

  • INVALIDQT function block...................................................153Application.................................................................................154Technical data...........................................................................155

    Boolean 16 to integer conversion B16I...........................................156Function block...........................................................................156Functionality .............................................................................156Operation principle ...................................................................156Signals.......................................................................................156Settings......................................................................................157Monitored data...........................................................................157

    Integer to boolean 16 conversion IB16A........................................157Function block...........................................................................157Functionality .............................................................................158Operation principle ...................................................................158Signals.......................................................................................158Settings......................................................................................158

    Additional arithmetic and logic functions........................................159Additional arithmetic and logic functions...................................159ADDI function block...................................................................159

    Function block......................................................................159Functionality.........................................................................159Signals..................................................................................159

    ADDR function block.................................................................160Function block......................................................................160Functionality.........................................................................160Signals..................................................................................160

    DIVI function block.....................................................................160Function block......................................................................160Functionality.........................................................................161Signals..................................................................................161

    DIVR function block...................................................................161Function block......................................................................161Functionality.........................................................................162Signals..................................................................................162

    MULI function block...................................................................162Function block......................................................................162Functionality.........................................................................162Signals..................................................................................163

    MULR function block.................................................................163Function block......................................................................163Functionality.........................................................................163Signals..................................................................................163

    SUBI function block...................................................................164

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    8 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Function block......................................................................164Functionality.........................................................................164Signals..................................................................................164

    SUBR function block..................................................................165Function block......................................................................165Functionality.........................................................................165Signals..................................................................................165

    ITOR function block...................................................................165Function block......................................................................165Functionality.........................................................................166Signals..................................................................................166

    RTOI function block...................................................................166Function block......................................................................166Functionality.........................................................................166Signals..................................................................................166

    MINMAXR function block ..........................................................167Function block......................................................................167Functionality.........................................................................167Signals..................................................................................167

    SWITCHI function block............................................................168Function block......................................................................168Functionality.........................................................................168Signals..................................................................................168

    SWITCHR function block...........................................................169Function block......................................................................169Functionality.........................................................................169Signals..................................................................................169

    Factory settings restoration............................................................169GATEWAY function block...............................................................170SYSTEMTIME function block.........................................................170WEBSERVER function block..........................................................170

    Section 4 Protection functions......................................................171Multipurpose analog protection MAPGAPC...................................171

    Identification..............................................................................171Function block...........................................................................171Functionality..............................................................................171Operation principle....................................................................171Application.................................................................................173Signals.......................................................................................173Settings......................................................................................173Measured values.......................................................................174Monitored data...........................................................................174Technical data...........................................................................174

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    PML630/Compact Load-Shedding Solution 9Technical Manual

  • Section 5 Supervision functions...................................................175Station battery supervision SPVNZBAT.........................................175

    Identification..............................................................................175Function block...........................................................................175Functionality..............................................................................175Operation principle ...................................................................175Application.................................................................................177Signals.......................................................................................177Settings......................................................................................178Measured values.......................................................................178Monitored Data..........................................................................179Technical data...........................................................................179

    Section 6 Measurement functions................................................181Three-phase current CMMXU........................................................181

    Identification..............................................................................181Function block...........................................................................181Signals.......................................................................................181Settings......................................................................................182Monitored data...........................................................................183Technical data...........................................................................184

    Section 7 Power management functions......................................185Load-shedding................................................................................185Load-shedding principles and terminology.....................................186

    Power flow sign conventions.....................................................188Compensated circuit breaker status..........................................189Load-shedding trigger................................................................190

    Fast load-shedding trigger....................................................190Slow load-shedding trigger...................................................190Manual load-shedding trigger ..............................................191Extended load-shedding trigger...........................................191

    Load-shedding blocking.............................................................192Power data holding and delay...................................................193

    Load-shedding functions................................................................194Power source circuit breaker function PSCSWI .......................194Load busbar monitoring function LDMMXU...............................194Network circuit breaker function NCBDCSWI............................194Network power monitoring function NPMMXU..........................194Contingency based load-shedding function LSCACLS ............195Load-shedding trip command function LSPTRC.......................197Subnetwork output function SNWRCLS ...................................197Peer-to-peer load-shedding function PPLSGGIO .....................198

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    10 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Power-source circuit breaker PSCSWI...........................................198Identification..............................................................................198Function block...........................................................................199Functionality..............................................................................199Operation principle....................................................................200

    Power monitoring.................................................................200Block logic............................................................................202Compensated CB status......................................................204General logic........................................................................204Fast load shed trigger logic..................................................206Over current based load shed..............................................206Demand based load shed....................................................208Slow load shed logic.............................................................210Binary to integer module......................................................212

    Signals.......................................................................................214Settings......................................................................................215Measured values.......................................................................217Monitored data...........................................................................218Technical data...........................................................................219

    Load busbar monitoring LDMMXU.................................................219Identification..............................................................................219Function block...........................................................................220Functionality..............................................................................220Operation principle....................................................................221

    Power monitoring.................................................................221Compensated CB status......................................................222Load inhibit logic...................................................................222Shed priority logic.................................................................223

    Signals.......................................................................................224Settings......................................................................................226Measured values.......................................................................228Monitored Data..........................................................................230

    Network circuit breaker NCBDCSWI..............................................232Identification..............................................................................232Function block...........................................................................232Functionality..............................................................................232Operation principle....................................................................233

    Power monitoring.................................................................233Block logic............................................................................235Compensated circuit breaker status.....................................238FLS trigger logic...................................................................239General Logic.......................................................................240Binary to integer...................................................................242

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    PML630/Compact Load-Shedding Solution 11Technical Manual

  • Signals.......................................................................................243Settings......................................................................................244Measured values.......................................................................244Monitored data...........................................................................245

    Network power monitoring NPMMXU.............................................245Identification..............................................................................245Function block...........................................................................246Functionality..............................................................................246Operation principle....................................................................246

    Configuration check..............................................................248Test request logic.................................................................248Adjacent area LS data handle..............................................249Source1/source2 LS data handle.........................................250Power monitoring.................................................................252General logic........................................................................252Load-shed sharing mode......................................................254Busbar logic..........................................................................255Binary to integer...................................................................256

    Signals.......................................................................................258Settings......................................................................................259Measured values.......................................................................259Monitored data...........................................................................260

    Contingency based load-shedding LSCACLS................................260Identification..............................................................................260Function block...........................................................................261Functionality..............................................................................261Operation principle....................................................................262

    Network determination.........................................................263LS blocking and trigger.........................................................265Load busbar monitoring .......................................................270Load generation balance......................................................270Manual LS selection ............................................................273Subnetwork priority calculation.............................................273Peer load shed logic.............................................................277General logic........................................................................278Load busbar command.........................................................279

    Signals.......................................................................................281Settings......................................................................................283Measured values.......................................................................284Monitored data...........................................................................285

    Load-shed trip command LSPTRC.................................................286Identification..............................................................................286Function block...........................................................................287

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    12 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Functionality..............................................................................287Operation principle....................................................................287

    General logic........................................................................288Signals.......................................................................................288Measured values.......................................................................289Monitored data...........................................................................289

    Output interface for subnetworks SNWRCLS.................................290Identification..............................................................................290Function block...........................................................................290Functionality..............................................................................290Operation principle....................................................................290

    General logic........................................................................292Signals.......................................................................................293Monitored data...........................................................................294

    Peer-to-peer load-shedding PPLSGGIO........................................295Identification..............................................................................295Function block...........................................................................296Functionality..............................................................................296Operation principle....................................................................296

    General logic........................................................................297Signals.......................................................................................298Monitored data...........................................................................298

    Section 8 Control functions..........................................................301Position evaluation POS_EVAL......................................................301

    Identification..............................................................................301Function block...........................................................................301Functionality .............................................................................301Operation principle....................................................................301Signals.......................................................................................302Settings......................................................................................302

    Section 9 General function block features....................................303Definite time characteristics............................................................303

    Definite time operation...............................................................303Current-based inverse definite minimum time (IDMT)characteristics.................................................................................308

    IDMT curves for overcurrent protection.....................................308Standard inverse-time characteristics..................................310User-programmable inverse-time characteristics.................325RI and RD-type inverse-time characteristics........................325

    Reset in inverse-time modes.....................................................328Section 10 IED physical connections.............................................339

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    PML630/Compact Load-Shedding Solution 13Technical Manual

  • Protective earth connections..........................................................339Inputs..............................................................................................340

    Measuring inputs.......................................................................340Auxiliary supply voltage input....................................................340Binary inputs..............................................................................341

    Outputs...........................................................................................341IRF.............................................................................................341

    Communication connections..........................................................342Ethernet RJ-45 front connection................................................342Ethernet connection for station communication.........................343Optical serial rear connection....................................................343Communication interfaces and protocols..................................343Recommended third-party industrial Ethernet switches ...........343

    Terminal diagrams..........................................................................344Section 11 Technical data..............................................................345Section 12 IED and functionality tests............................................349Section 13 Applicable standards and regulations..........................353Section 14 Glossary.......................................................................355

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    14 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Section 1 Introduction

    1.1 This manualThe technical manual contains application and functionality descriptions and listsfunction blocks, logic diagrams, input and output signals, setting parameters andtechnical data sorted per function. The manual can be used as a technical referenceduring the engineering phase, installation and commissioning phase, and duringnormal service.

    1.2 Intended audienceThis manual addresses system engineers and installation and commissioningpersonnel, who use technical data during engineering, installation andcommissioning, and in normal service.The system engineer must have a thorough knowledge of protection systems,protection equipment, protection functions and the configured functional logic inthe IEDs. The installation and commissioning personnel must have a basicknowledge in handling electronic equipment.

    1.3 Product documentation1.3.1 Product documentation set

    The application engineering guide provides information for the completeconfiguration of the load-shedding application comprising Relion IEDs, RIO600,load-shedding controller IED and COM600 using PCM600, IET600 and SAB600.With a practical example, the document explains all the steps from system planningand engineering to application functionality and IED parameterization for realizingthe load-shedding functionality using the IEDs.The commissioning manual contains instructions on how to commission the IEDwith the load-shedding power management functions. The manual can also be usedby system engineers and maintenance personnel for assistance during the testingphase. The manual provides procedures for checking external circuitry andenergizing the IED, parameter setting and configuration. The manual describes theprocess of testing an IED in a substation that is not in service. The chapters areorganized in chronological order in which the IED should be commissioned.

    1MRS757256 D Section 1Introduction

    PML630/Compact Load-Shedding Solution 15Technical Manual

  • The communication protocol manual describes a communication protocolsupported by the IED. The manual concentrates on vendor-specific implementations.The engineering manual contains instructions to engineer the IEDs for the load-shedding power management functionality using PCM600. The manual providesinstructions on how to set up a PCM600 project and insert IEDs to the projectstructure and also recommends a sequence for engineering of the IEDs' LHMIfunctions and IEC 61850 communication engineering.The installation manual contains instructions on how to install the IED. Themanual provides procedures for mechanical and electrical installation. The chaptersare organized in chronological order in which the IED should be installed.The operation manual contains instructions on how to operate the IED once it hasbeen commissioned. The manual provides instructions for monitoring, controllingand setting the IED.The point list manual describes the outlook and properties of the data pointsspecific to the IED. The manual should be used in conjunction with thecorresponding communication protocol manual.The technical manual contains application and functionality descriptions and listsfunction blocks, logic diagrams, input and output signals, setting parameters andtechnical data sorted per function. The manual can be used as a technical referenceduring the engineering phase, installation and commissioning phase, and duringnormal service.

    See the 630 series documentation for installation andcommissioning manuals. The PML630 documentation set includesonly application engineering guide, engineering manual, IEC 61850communication protocol manual, IEC 61850 point list manual,operation manual and technical manual.

    1.3.2 Document revision historyDocument revision/date Product version HistoryA/2011-05-04 1.1 First releaseB/2011-11-03 1.1.1 Content updated to correspond to the

    product series versionC/2012-03-29 1.1.2 Content updated to correspond to the

    product series versionD/2013-10-14 1.2 Content updated to correspond to the

    product series version

    Download the latest documents from the ABB Websitehttp://www.abb.com/substationautomation.

    Section 1 1MRS757256 DIntroduction

    16 PML630/Compact Load-Shedding SolutionTechnical Manual

  • 1.3.3 Related documentationName of the document Document IDApplication Engineering Guide 1MRS757394Engineering Manual 1MRS757184IEC 61850 Communication Protocol Manual 1MRS757260IEC 61850 Point List Manual 1MRS757261Operation Manual 1MRS757183

    Product series- and product-specific manuals can be downloaded from the ABBWebsite http://www.abb.com/substationautomation.

    1.4 Symbols and conventions1.4.1 Symbols

    The electrical warning icon indicates the presence of a hazardwhich could result in electrical shock.

    The warning icon indicates the presence of a hazard which couldresult in personal injury.

    The caution icon indicates important information or warning relatedto the concept discussed in the text. It might indicate the presenceof a hazard which could result in corruption of software or damageto equipment or property.

    The information icon alerts the reader of important facts andconditions.

    The tip icon indicates advice on, for example, how to design yourproject or how to use a certain function.

    Although warning hazards are related to personal injury, it is necessary tounderstand that under certain operational conditions, operation of damagedequipment may result in degraded process performance leading to personal injuryor death. Therefore, comply fully with all warning and caution notices.

    1MRS757256 D Section 1Introduction

    PML630/Compact Load-Shedding Solution 17Technical Manual

  • 1.4.2 Document conventionsA particular convention may not be used in this manual. Abbreviations and acronyms in this manual are spelled out in the glossary. The

    glossary also contains definitions of important terms. Push-button navigation in the LHMI menu structure is presented by using the

    push-button icons.To navigate between the options, use and .

    HMI menu paths are presented in bold.Select Main menu/Settings.

    WHMI menu names are presented in bold.Click Information in the WHMI menu structure.

    LHMI messages are shown in Courier font.To save the changes in non-volatile memory, select Yes and press .

    Parameter names are shown in italics.The function can be enabled and disabled with the Operation setting.

    The ^ character in front of an input or output signal name in the function blocksymbol given for a function, indicates that the user can set an own signal namein PCM600.

    The * character after an input or output signal name in the function blocksymbol given for a function, indicates that the signal must be connected toanother function block in the application configuration to achieve a validapplication configuration.

    1.4.3 Functions, codes and symbolsTable 1: Functions included in the IEDFunctionality IEC 61850MonitoringGeneric measured values MVGGIO1)Single-point indication SPGGIOSixteen single-point indication SP16GGIO1)Event counter CNTGGIO1)Measured value limit supervision MVEXP1)Station battery supervision SPVNZBAT1)Power management (load-shedding)Critical circuit breaker NCBDCSWIContingency based load-shedding core function LSCACLSBusbar-wise sheddable loads data LDMMXUBusbar-wise load feeders load-shedding command LSPTRCPower source PSCSWISubnetwork supervision SNWRCLS

    Table continues on next page

    Section 1 1MRS757256 DIntroduction

    18 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Functionality IEC 61850Network power source NPMMXUInformation exchange between peer PML630s PPLSGGIO2)Disturbance recorder functionsAnalog channels 1-10 (samples) A1RADRAnalog channel 11-20 (samples) A2RADRAnalog channel 21-30 (samples) A3RADR1)Analog channel 31-40 (calc. val.) A4RADR1)Binary channel 1-16 B1RBDRBinary channel 17-32 B2RBDRBinary channel 33-48 B3RBDRBinary channel 49-64 B4RBDR1)Disturbance recorder DRRDREControlPosition evaluate POS_EVAL1)Double point indication DPGGIO1)Multipurpose analog protection MAPGAPC1)

    1) The function is not used by default. However, it is kept enabled in the Application Configuration toolfor instantiation in any additional logic other than features offered by the IED connectivity package.

    2) The PPLSGGIO function block is instantiated only when the cPMS - LS Configuration B is selectedin the configuration wizard of the IED.

    1MRS757256 D Section 1Introduction

    PML630/Compact Load-Shedding Solution 19Technical Manual

  • 20

  • Section 2 PML630 overview

    2.1 OverviewPML630 is a Power Management IED that provides comprehensive load-sheddingsolution for the power network in an industrial plant. It protects the plant againstblackouts and power source outages due to system disturbances. This IED is amember of ABB's Relion product family and a part of its 630 product seriescharacterized by functional scalability and flexible configurability. PML630 isidentical to the Relion 630 series IEDs and does not have any specific hardwaremodules. It is only the application functions pre-loaded in the IED that differentiateit from the other 630 series IEDs.The IED supports various modes of load-shedding. Fast load-shedding based on network contingencies Slow load-shedding based on transformer overloading or the maximum

    demand violation on the grid tie feeder Manual load-shedding based on operator-defined priorities or amount of loads

    to be shed in kW

    PML630 complies to the IEC 61850 standard and offers seamless connectivity withother Relion 615/620/630 series IEDs, RIO600 IO units and COM600 to realize theload-shedding functionality. The IED uses GOOSE and MMS communicationprofiles for I/O data exchange with other Relion product family IEDs and COM600.The PML630 load-shedding controller essentially handles load-sheddingfunctionality for plant electrical network. This comprises of various components. 6 generators 2 external network connectivity (tie line or grid transformers) and 6 busbars 15 network breakers 60 load-shedding groups (10 loads/load groups per busbar)

    This is referred as cPMS - LS configuration A (for load-shedding powermanagement function).

    All the six generators could also be configured as utility gridtransformers.

    When the power network configuration exceeds the limits defined for a PML630 inConfiguration A, an additional PML630 IED can be configured in a peer-to-peermethod thereby dividing the network into sectors called power network areas. Each

    1MRS757256 D Section 2PML630 overview

    PML630/Compact Load-Shedding Solution 21Technical Manual

  • PML630 is responsible for the load-shedding action in its respective area, based onthe power source capabilities and inter-power network area connectivity status. Thecoordination of load-shedding actions between the PML630 IEDs is handled bysuitable parameterization. This arrangement of multiple PML630 IEDs in a peer-to-peer method is called cPMS - LS configuration B.The PML630 IEDs communicate with each other also using IEC 61850 GOOSE.Likewise, cPMS - LS configuration B is also a feature in PML630. TheConfiguration B is always built up over and above the Configuration A and hencethe latter is a prerequisite.The maximum recommended number of PML630 IEDs in a peer-to-peer mode inConfiguration B is three.The power network areas would be connected to each other through their grid 1 orgrid 2 power source connection points.

    2.2 Product version historyProduct version Product history1.1 First release1.1.1 Maintenance release1.1.2 Maintenance release1.2 Support for Relion 620 series, RIO600 in the solution cluster

    Fast load-shedding: external trigger enabling, extending networkcapability with Configuration B

    Slow load-shedding: coverage of all 6 generators for current-basedoverload load-shedding, 2 grid transformers' currents can be directlymonitored for overcurrent using 8 CT TRM card; provision for directreduction of overload (in addition to power-balance calculations)

    Manual load-shedding: defining load-shedding by power value fromLHMI/COM600, external trigger for all 4 subnetworks

    Underfrequency load-shedding using 630 series' Multipurpose analogprotection MAPGAPC for underfrequency detection and activationthrough fast and slow load-shedding functions

    Manual load-shedding mode not affected when fast and slow load-shedding modes are blocked

    Provision for external inhibition of load feeders Adaptation for double-busbar configuration

    2.3 PCM600 and IED connectivity package version Protection and Control IED Manager PCM600 Ver.2.5 or later ABB IED Connectivity Package PML630 Ver.1.2

    Section 2 1MRS757256 DPML630 overview

    22 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Download connectivity packages from the ABB Web sitehttp://www.abb.com/substationautomation

    2.4 Local HMIThe LHMI is used for setting, monitoring and controlling the IED. The LHMIcomprises the display, buttons, LED indicators and communication port.

    GUID-AC825CD8-7361-464F-98DC-35D81332D75F V4 EN

    Figure 1: LHMI

    2.4.1 DisplayThe LHMI includes a graphical monochrome display with a resolution of 320 x240 pixels. The character size can vary. The amount of characters and rows fittingthe view depends on the character size and the view that is shown.

    1MRS757256 D Section 2PML630 overview

    PML630/Compact Load-Shedding Solution 23Technical Manual

  • The display view is divided into four basic areas.

    1 2

    3 4GUID-371FF8D7-5C0C-406E-B0CE-F512ADB53FF2 V5 EN

    Figure 2: Display layout1 Path2 Content3 Status4 Scroll bar (appears when needed)

    The function button panel shows on request what actions are possible with thefunction buttons. Each function button has a LED indication that can be used as afeedback signal for the function button control action. The LED is connected to therequired signal with PCM600.

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    24 PML630/Compact Load-Shedding SolutionTechnical Manual

  • GUID-ED0CC912-ED59-4270-A3B8-9818FFE300FD V5 EN

    Figure 3: Function button panelThe alarm LED panel shows on request the alarm text labels for the alarm LEDs.

    GUID-A6E0ECB6-03ED-44FC-AD89-BCE6CB25E5DC V4 EN

    Figure 4: Alarm LED panelThe function button and alarm LED panels are not visible at the same time. Eachpanel is shown by pressing one of the function buttons or the Multipage button.Pressing the ESC button clears the panel from the display. Both the panels havedynamic width that depends on the label string length that the panel contains.

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    PML630/Compact Load-Shedding Solution 25Technical Manual

  • 2.4.2 LEDsThe LHMI includes three indicators above the display: Ready, Start, and Trip. Theload shed start (initiation of power balance calculation) and operate (initiation of load-shed commands) are mapped to LHMI Start and Trip LEDs respectively.There are also 15 matrix programmable alarm LEDs in front of the LHMI. EachLED indicates three states with the colors: green, yellow and red.

    2.4.3 KeypadThe LHMI keypad contains push-buttons which are used to navigate in differentviews or menus. The push-buttons are used to acknowledge alarms, resetindications, provide help, make new settings and confirmations.The keypad also contains programmable push-buttons that can be configured eitheras menu shortcut or control buttons.

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  • 12

    3

    4

    5

    6

    7

    8 9 10 11 12 13 14 15 16 17

    18

    19

    20

    21

    22

    GUID-CDE93DB6-914C-49B6-851D-B67152AD7C2B V2 EN

    Figure 5: LHMI keypad with object control, navigation and command pushbuttons and RJ-45 communication port

    1...5 Function button 14 Enter6 Disabled in PML630 15 Disabled in PML6307 Disabled in PML630 16 Uplink LED8 Escape 17 Not in use9 Left 18 Multipage10 Down 19 Menu11 Up 20 Clear12 Right 21 Help13 Key 22 Communication port

    2.5 Web HMIThe WHMI enables the user to access the IED via a web browser. The supportedWeb browser version is Internet Explorer 7.0 or later.

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    PML630/Compact Load-Shedding Solution 27Technical Manual

  • WHMI is disabled by default. To enable the WHMI, select Mainmenu/Configuration/HMI/Web HMI/Operation via the LHMI.

    WHMI offers several functions. Alarm indications and event lists System supervision Parameter settings Measurement display Disturbance records

    The menu tree structure on the WHMI is almost identical to the one on the LHMI.

    GUID-B8B68F5D-8FDA-4B80-8C55-8EFF7B49A66B V3 EN

    Figure 6: Example view of the WHMIThe WHMI can be accessed locally and remotely. Locally by connecting the user's computer to the IED via the front

    communication port. Remotely over LAN/WAN.

    Thus, the WHMI can be used remotely to set the IED parameters and also otherRelion series IEDs from a central operation workplace in the substation or the plantnetwork.

    2.5.1 Command buttonsCommand buttons can be used to edit parameters and control information via theWHMI.

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    28 PML630/Compact Load-Shedding SolutionTechnical Manual

  • Table 2: Command buttonsName Description

    Enabling parameter editing.

    Disabling parameter editing.

    Writing parameters to the IED.

    Refreshing parameter values.

    Committing changes to IED's non-volatile flash memory.Rejecting changes.

    Triggering the disturbance recordermanually.Saving the disturbance recording.

    Freezing the values so thatupdates are not displayed.Receiving continuous updates tothe monitoring view.Deleting the disturbance record.

    2.6 AuthorizationThe user categories are predefined for the LHMI and WHMI, each with differentrights.The IED users can be created, deleted and edited only with PCM600. One user canbelong to one or several user categories.

    At delivery, the IED user has full access as SuperUser until usersare created with PCM600. Logging on is not required for the LHMI.

    Table 3: Predefined user categoriesUsername User rightsSystemOperator Control from LHMI, no bypassProtectionEngineer All settingsDesignEngineer Application configurationUserAdministrator User and password administration

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    PML630/Compact Load-Shedding Solution 29Technical Manual

  • All changes in user management settings will cause an IED reboot.

    2.7 CommunicationThe IED supports IEC 61850-8-1 standard for communication. This includesMMS communication profile for vertical communication and GOOSEcommunication profile for horizontal communication.All operational information and controls are available through these profiles. TheIED operator functionality is achieved through the MMS communication profile orthrough the WHMI client surface.The IED exchanges load-shedding operational signals using the IEC 61850GOOSE profile from feeder IEDs (REF/REM/RET615, REF/REM/RET620, REF/REG/REM/RET630 and Remote I/O Unit RIO600 1.2). The IED receives binaryand analog signals from feeder IEDs for load-shedding input data processing. The data transfer from a generator or transformer IEDs (RET615, RET620, REG/

    RET630 and Remote I/O Unit RIO600 1.2) to the IED includes circuit breakerstatus, trip or critical alarms, power and current (for transformer feeder IEDs).

    The data transfer from the load feeder IEDs (REF/REM/RET615, REF/REM/RET620, REF/REM/RET630 and Remote I/O Unit RIO600 1.2) to the IEDincludes circuit breaker status and power.

    The load-shedding information (binary signals) is sent to the load feeder IEDsusing IEC 61850 GOOSE communication profile. The IED can also interoperatewith other IEC 61850 compliant IEDs including Relion 630 and 615 series ofIEDs and reports events to five different IEC 61850 clients (HMI/Gateways and soon) simultaneously using the MMS communication profile.All communication connectors, except for the front port connector are placed onintegrated communication modules.The IED supports SNTP and IRIG-B time synchronization methods with a time-stamping resolution of 1 ms.Ethernet based: SNTP (Simple Network Time Protocol)

    With special time synchronization wiring: IRIG-B

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  • Section 3 Basic functions

    3.1 User authentication3.1.1 Authority check ATHCHCK3.1.1.1 Functionality

    To safeguard the interests of our customers, both the IED and the tools that areaccessing the IED are protected by means of authorization handling. Theauthorization handling of the IED and PCM600 is implemented at both accesspoints to the IED. Local, through the LHMI Remote, through the communication ports

    3.1.1.2 Operation principleDifferent levels (or types) of users can access or operate different areas of the IEDand tools' functionality.Table 4: Predefined user typesUser type Access rightsSystemOperator Control from LHMI, no bypass, protection

    function activation and deactivationProtectionEngineer All settingsDesignEngineer Application configuration (including SMT, GDE

    and CMT)UserAdministrator User and password administration for the IED

    The IED users can be created, deleted and edited only with the IED UserManagement within PCM600. The user can only LogOn or LogOff on the LHMIon the IED. There are no users, groups or functions that can be defined on LHMI.

    Use only characters A - Z, a - z and 0 - 9 in user names and passwords.

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    PML630/Compact Load-Shedding Solution 31Technical Manual

  • Include at least one user in the UserAdministrator group to be ableto write users created in PCM600 to the IED.

    Authorization handling in the IEDAt delivery the default user is the SuperUser. No Log on is required to operate theIED until a user has been created with the IED User Management.Once a user is created and written to the IED, the user can perform a Log on usingthe password assigned in the tool. The default user is Guest.If there is no user created, an attempt to log on displays a message box No userdefined!.If one user leaves the IED without logging off, the IED returns to Guest state, inwhich only reading is possible, after the timeout (set in Main menu/Configuration/HMI/LHMI/Display Timeout) elapses. By factory default, the display timeout isset to 60 minutes.If one or more users are created with the IED User Management and written to theIED, the Log on window opens if a user attempts a Log on by pressing the Key push-button or if the user attempts to perform an operation that is password protected.

    See the operation manual for more information on the logonprocedure.

    After a successful Log on, the LHMI returns to the actual setting folder if, forexample, a password protected setting needs to be changed. If the Log on hasfailed, an "Error Access Denied" message opens. If the user enters an incorrectpassword three times, the user is blocked for ten minutes before a new attempt tolog in can be performed. The user is blocked from logging in from the LHMI,WHMI and PCM600. However, other users are allowed to log in during this period.

    3.1.1.3 SettingsThe function does not have any parameters available in LHMI or PCM600.

    3.1.2 Authority status ATHSTAT3.1.2.1 Function block

    ATHSTATUSRBLKED

    LOGGEDONIEC09000235_en_1.vsd

    IEC09000235 V1 EN

    Figure 7: Function block

    Section 3 1MRS757256 DBasic functions

    32 PML630/Compact Load-Shedding SolutionTechnical Manual

  • 3.1.2.2 FunctionalityAuthority status (ATHSTAT) function is an indication function block for userlogon activity.

    3.1.2.3 Operation principleAuthority status (ATHSTAT) function informs about two events related to the IEDand the user authorization. The fact that at least one user has tried to log on wrongly into the IED and it

    was blocked (the output USRBLKED) The fact that at least one user is logged on (the output LOGGEDON)

    Whenever one of the two events occurs, the corresponding output (USRBLKED orLOGGEDON) is activated.

    3.1.2.4 SignalsTable 5: ATHSTAT Output signalsName Type DescriptionUSRBLKED BOOLEAN At least one user is blocked by invalid passwordLOGGEDON BOOLEAN At least one user is logged on

    3.1.2.5 SettingsThe function does not have any parameters available in LHMI or PCM600.

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    PML630/Compact Load-Shedding Solution 33Technical Manual

  • 3.2 Local human-machine interface LHMI3.2.1 Local HMI screen behaviour3.2.1.1 SettingsTable 6: SCREEN Non group settings (basic)Name Values (Range) Unit Step Default DescriptionDisplayTimeout 10 - 120 Min 10 60 Local HMI display timeoutContrastLevel -100 - 100 % 10 0 Contrast level for displayDefaultScreen Main menu

    ControlEventsMeasurementsDisturbancerecordsMonitoring

    - - Main menu Default screen

    EvListSrtOrder Latest on topOldest on top

    - - Latest on top Sort order of event list

    AutoIndicationDRP OffOn

    - - Off Automatic indication of disturbance report

    SubstIndSLD NoYes

    - - No Substitute indication on single linediagram

    InterlockIndSLD NoYes

    - - No Interlock indication on single line diagram

    BypassCommands NoYes

    - - No Enable bypass of commands

    3.2.2 Local HMI signals3.2.2.1 Function block

    LHMICTRLCLRLEDS HMI-ON

    RED-SYELLOW-SYELLOW-FCLRPULSELEDSCLRD

    IEC09000320-1-en.vsdIEC09000320 V1 EN

    Figure 8: LHMICTRL function block

    Section 3 1MRS757256 DBasic functions

    34 PML630/Compact Load-Shedding SolutionTechnical Manual

  • 3.2.2.2 SignalsTable 7: LHMICTRL Input signalsName Type Default DescriptionCLRLEDS BOOLEAN 0 Input to clear the LCD-HMI LEDs

    Table 8: LHMICTRL Output signalsName Type DescriptionHMI-ON BOOLEAN Backlight of the LCD display is activeRED-S BOOLEAN Red LED on the LCD-HMI is steadyYELLOW-S BOOLEAN Yellow LED on the LCD-HMI is steadyYELLOW-F BOOLEAN Yellow LED on the LCD-HMI is flashingCLRPULSE BOOLEAN A pulse is provided when the LEDs on the LCD-

    HMI are clearedLEDSCLRD BOOLEAN Active when the LEDs on the LCD-HMI are not

    active

    3.2.3 Basic part for the LED indication module3.2.3.1 Function block

    LEDGENBLOCKRESET

    NEWINDACK

    IEC09000321-1-en.vsdIEC09000321 V1 EN

    Figure 9: LEDGEN function block

    GRP1_LED1^HM1L01R^HM1L01Y^HM1L01G

    IEC09000322 V1 EN

    Figure 10: GRP1_LED1 function blockThe GRP1_LED1 function block is an example, all 15 LED in each of group 1 - 3has a similar function block.

    3.2.3.2 FunctionalityThe function blocks LEDGEN and GRP1_LEDx, GRP2_LEDx and GRP3_LEDx(x=1-15) controls and supplies information about the status of the indication LEDs.The input and output signals of the function blocks are configured with PCM600.The input signal for each LED is selected individually using Signal Matrix orApplication Configuration. Each LED is controlled by a GRP1_LEDx functionblock, that controls the color and the operating mode.

    1MRS757256 D Section 3Basic functions

    PML630/Compact Load-Shedding Solution 35Technical Manual

  • Each indication LED on LHMI can be set individually to operate in six differentsequences; two as follow type and four as latch type. Two of the latching sequencetypes are intended to be used as a protection indication system, either in collectingor restarting mode, with reset functionality. The other two are intended to be usedas signalling system in collecting mode with acknowledgment functionality.

    3.2.3.3 Operation principleStatus LEDsThere are three status LEDs above the display in the front of the IED: green,yellow and red.The green LED has a fixed function, while the yellow and red LEDs are userconfigured. The yellow LED can be used to indicate that a disturbance report iscreated (steady) or that the IED is in test mode (flashing). The red LED can be usedto indicate a trip command.

    Indication LEDsOperating modesCollecting mode LEDs which are used in the collecting mode of operation are accumulated

    continuously until the unit is acknowledged manually. This mode is suitablewhen the LEDs are used as a simplified alarm system.

    Re-starting mode In the re-starting mode of operation each new start resets all previous active

    LEDs and activates only those which appear during one disturbance. OnlyLEDs defined for re-starting mode with the latched sequence type 6(LatchedReset-S) initiate a reset and a restart at a new disturbance. Adisturbance is defined to end a settable time after the reset of the activatedinput signals or when the maximum time limit has elapsed.

    Acknowledgment/reset From LHMI

    The active indications can be acknowledged/reset manually. Manualacknowledgment and manual reset have the same meaning and is acommon signal for all the operating sequences and LEDs. The functionis positive-edge triggered, not level triggered. Acknowledge/reset via theClear button and menus on the LHMI.

    From function input The active indications can also be acknowledged/reset from an input,

    ACK_RST, to the function. This input can, for example, be configured toa binary input operated from an external push button. The function is

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    36 PML630/Compact Load-Shedding SolutionTechnical Manual

  • positive-edge triggered, not level triggered. This means that even if thebutton is continuously pressed, the acknowledgment/reset only affectsindications active at the moment when the button is first pressed.

    Automatic reset Only indications defined for re-starting mode with the latched sequence

    type 6 (LatchedReset-S)The can be automatically reset. When the LEDshave automatically been reset, still persisting indications are indicatedwith a steady light.

    Operating sequenceThe sequences can be of type Follow or Latched. For the Follow type, the LEDfollow the input signal completely. For the Latched type, each LED latches to thecorresponding input signal until it is reset.The figures below show the function of available sequences selectable for eachLED separately. For sequence 1 and 2 (Follow type), the acknowledgment/resetfunction is not applicable. Sequence 3 and 4 (Latched type with acknowledgement)are only working in collecting mode. Sequence 5 is working according to Latchedtype and collecting mode while sequence 6 is working according to Latched typeand restarting mode. The letters S and F in the sequence names have the meaning S= Steady and F = Flash.At the activation of the input signal, the indication obtains corresponding colorcorresponding to the activated input and operates according to the selectedsequence diagrams.

    = No indication = Steady light = Flash

    G= Green Y= Yellow R= RedIEC09000311.vsd

    IEC09000311 V1 EN

    Figure 11: Symbols used in the sequence diagramsSequence 1 (Follow-S)This sequence follows all the time, with a steady light, the corresponding inputsignals. It does not react on acknowledgment or reset. Every LED is independent ofthe other LEDs in its operation.

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    PML630/Compact Load-Shedding Solution 37Technical Manual

  • Activatingsignal

    LEDIEC01000228_2_en.vsd

    IEC01000228 V2 EN

    Figure 12: Operating sequence 1 (Follow-S)If inputs for two or more colors are active at the same time to one LED the priorityis as described above. An example of the operation when two colors are activatedin parallel is shown in Figure 13.

    Activatingsignal GREEN

    LED

    IEC09000312_1_en.vsd

    G R GG

    Activatingsignal RED

    IEC09000312 V1 EN

    Figure 13: Operating sequence 1, two colorsSequence 2 (Follow-F)This sequence is the same as sequence 1, Follow-S, but the LEDs are flashinginstead of showing steady light.Sequence 3 (LatchedAck-F-S)This sequence has a latched function and works in collecting mode. Every LED isindependent of the other LEDs in its operation. At the activation of the input signal,the indication starts flashing. After acknowledgment the indication disappears ifthe signal is not present any more. If the signal is still present afteracknowledgment it gets a steady light.

    Activatingsignal

    LED

    Acknow.en01000231.vsd

    IEC01000231 V1 EN

    Figure 14: Operating sequence 3 (LatchedAck-F-S)

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    38 PML630/Compact Load-Shedding SolutionTechnical Manual

  • When a LED is acknowledged, all indications that appear before the indicationwith higher priority has been reset, are acknowledged, independent of if the lowpriority indication appeared before or after acknowledgment. In Figure 15 it isshown the sequence when a signal of lower priority becomes activated afteracknowledgment has been performed on a higher priority signal. The low prioritysignal is shown as acknowledged when the high priority signal resets.

    Activatingsignal RED

    LED

    AcknowIEC09000313_1_en.vsd

    Activatingsignal GREEN

    R R G

    IEC09000313 V1 EN

    Figure 15: Operating sequence 3, 2 colors involvedIf all three signals are activated