dcs hardware guide

DCS SYSTEMPAWANDEEP SINGHDATE 21.1.2016

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Model PDP Series 400 maxDPU4FHardware Guide

Distributed Processing Unit Functionality

The hardware processing engine of the maxDNA distributed control system. The DPUperforms primary data acquisition, control, and data processing functions.The DPU, also known as maxDPU4F, is a self-contained microprocessor based,rack-mounted unit, which occupies a single slot in a RemoteProcessing Unit cabinet using an 8-wide maxPAC backplane. It is designedto operate with user-defined combinations of maxDNA Model IOPInput/output Modules, and to communicate with other devices, such asProgrammable Logic Controllers and Remote Terminal Units.As a station on maxNET, the DPU scans and processes information for useby other devices in the maxDNA system. Each DPU performs:• Comprehensive alarming and calculations.• Logging of Sequence of Events (SOE) data at 1 millisecond resolution.• Acquisition of trend information.• Continuous scanning of Model IOP I/O modules.• Execution of predefined algorithms, called Function Blocks, for processcontrol and data acquisition.

maxDPU4FModel Numbers

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1. Model PDP401 – DPU4F #1815502. Model PDP403 – DPU4F #181550, Backup Cable #0502923. Model PDP406 – DPU4F w/IRIG & Comm. #1815514. Model PDP408 – DPU4F w/IRIG & Comm #181551, Backup Cable #050292

Distributed Processing Unit Hardware A DPU consists of a printed circuit board containing the Control Processor and Input/output Processor (IOP) and is installed in a maxPAC chassis. The DPU’s front panel contains status LEDs, a MODE Switch, Backup Connector, Network Connectors, and takeover and reset buttons and a BNC Connector for interface to an IRIG-B time source. Distributed Processing Unit SpecificationsI.Operating temperature range 0 to 60 degrees CII.Storage temperature range (-)25 to 70 degrees CIII.Relative humidity range 5 to 90% noncondensingIV.Power requirements 24 Vdc ±4 VdcV.Current: 0.9 A @ 24 Vdc

DPU4F – FRONT PANEL FEATURES

16 POSITION ROTARY SWITCH DETERMINES THE OPERATIONAL STATE OF THE DPU.

F NORMAL OPERATING MODE. WILL USE THE DATABASE STORED IN FLASH IF AVAILABLE.

DUAL ETHERNET 10/100 BASE T PORTSPROVIDES CONNECTIVITY TO THE MAXNET.(NET A & NET B)

REPORT THE STATUS OF THE maxNET A & B PORTS.

NETWORK IS OPERATIONAL

DPU HAS DETECTED A STATION WHICH DOES NOT

HEAR FROM IT

NETWORK FAILURE. DPU DOES NOT HEAR FROM

ANY STATION.

SOLID GREEN

SOLID YELLOW

BLINKING YELLOW

BACKUP PORTA 100 MBPS ETHERNET INTERFACE USED TO PASS DATABASE INFORMATION TO AHOT STAND BY DPU.

BACKUP LED.INDICATES THE REDUNDANCY STATUS OF THE DPUs CONFIGURED AS A BACKUPPAIR.

BACKUP NETWORK IS OPERATIONAL

SOME BACKUP NETWORK ERRORS

COMMUNICATION IS NOT ESTABLISHED WITH

BACKUP DPU

SOLID GREEN

SOLID YELLOW

SOLID RED

INDICATES OPERATION STATE OF THE IOM PROCESSOR.

OPERATIONAL IOM

NA

IOM STOPPED OR TIMED OUT.

RESET REQUIRED.

SOLID GREEN

SOLID YELLOW

SOLID RED

INDICATES THE STATUS OF THE I/OBUS TRANSACTIONS.

ALL CONFIGURED I/O CARDS ARE WORKING

CORRECTLY

SOME CONFIGURED CARDS ARE WORKING

CORRECTLY. SOME ARE NOT.

NO CONFIGURED CARDS ARE WORKING CORRECTLY.

SOLID GREEN

SOLID YELLOW

SOLID RED

REPORTS THE HEALTH OF THE CONTROLPROCESSOR.

HEALTHY HEARTBEAT

SOLID GREEN CP FAILURE

SOLID YELLOW < 20 SEC LOADING OR SAVING

DATABASE;>20 SEC ---CP FAILURE

BLINK YELLOW GREEN

SOLID GREEN

SOLID YELLOW

REPORTS THE CURRENT CONTROL STATEOF THE DPU.

DPU STATESTATE LED

ACTIVE DPU INACTIVE DPU

STANDALONE DPUs

BACKUP WARMING UPBLINKS GREEN & RED BLINKS YELLOW & RED

BACKUP DPUs WITH BACKUP

AS HOT STANDBY

OFF LINE

SOLID GREEN SOLID YELLOW

BLINKS GREEN & YELLOW

BLINKS YELLOW & BLANK

RESET BUTTONPRESSING THIS BUTTON WILL CAUSE THEDPU TO STOP CONTROLLING & GO THRO’A RESET CYCLE.TAKEOVER BUTTONPRESSING THIS BUTTON WILL CAUSE APREVIOUSLY INACTIVE DPU TO GO ACTIVE. SERIAL PORT(OPTIONAL)OPTIONAL RS232 SERIAL PORT WITH RJ45CONNECTOR FOR INTERFACING TO EXTERNAL PLC TYPE DEVICES.IRIG-B PORT(OPTIONAL)BNC CONNECTOR WHICH SUPPORTS AN INTERFACE TO A GPS RECIEVER.THIS OPTIONALLOWS TIME SYNCHRONISATION TO GLOBAL TIME.

SERIAL PORT

IRIG PORT

DPU

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IO CHECK POINT

Mittwoch, 3. Mai 2023 Fußzeilentext 15

Ethernet Network Connections OF DPU4F


The DPU chassis contains two 10/100 Ethernet ports using RJ-45 connectorsto interface with the maxNET communication network. Network A andNetwork B operate as independent networks. Because the Ethernet channelsare independent, a fault on one network or processor will not affect theoperation of the other, or cause a DPU failover. Ethernet messages aresent/received based upon the DPU’s Ethernet address with minimal controlprocessor intervention.Backup Link A 100 Mbps Ethernet link is used to pass database information between anactive DPU and an inactive standby DPU. A custom Category 5e cable(Metso #050292) connects the DPU backup pair together via the backuplink’s RJ-45 connector. Secondary DPUs will typically be installed in thelower chassis just below the primary DPUs.

Interconnecting I/O Racks


Use a ribbon cable to interconnect, in a daisy chain manner, two or moreadjacent I/O chassis assemblies in the same maxDNA I/O cabinet group. The cables should be installed in a manner that minimizes the total I/O bus length. This is done by utilizing the I/O bus connectors on both ends of the racks so that the bus “flows through” the racks.

Interconnecting I/O Racks

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Bus end

I/O Module Types

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Chassis Assembly

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FIELD SIGNAL FLOW

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FIELD SIGNAL FLOW

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