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MCS’S MAGNUM DIAGNOSTICS PACKAGE

MICRO CONTROL SYSTEMSONLINE

TRAINING FACILITY

MCS DIAGNOSTICS SYSTEM

General Overview

Built-in Compressor Protection

Built-in Energy Efficiency Selection

Built-in Proactive Control

Data that Allows you to Analyze Problems

Touch Screen Graphics & Documentation

● Designed to control Chillers, RTU’s Boiler’s & Pump Packages

MCS Diagnostics General Overview

● There is complete control support for the following:

o Scroll, Screw & Centrifugal Comp., including Digital Scrolls & Turbocor’s.

o Electronic Expansion Valves, including dynamic capacity adjustments.

o Heating, Cooling, Boilers, Cooling Tower Systems are all supported.

o Fixed & Modulating Dampers, Pumps, Evaporator fans, Condenser fans etc

o Multiple Pumps on Condensers, Evaporators. Boilers, etc

o BMS support Bacnet IP, Modbus, Johnson N2; Bacnet MSTP & Lontalk w/adapter

o Trending Static & Dynamic. Static provides 1 week @ 10 minute sample time.

● Scroll Compressors both single & Tandem

MCS Diagnostics System (Compressor)

● Screw compressors both step & infinite capacity

● Centrifugal including Turbocor

● Variable speed on scroll, screw & centrifugal

● EXV’s for Evaporator & Hot Gas

● EXV ctl on suction or discharge superheat or Evap Level

● Digital Scroll using a 15 second time slice

MCS Diagnostics System(Heating & Cooling Systems)

● Heating with multiple boilers

● Cooling systems with chiller barrels & remote DX coils

● Heating with reverse cycle heat pumps

● Heating with modulating reheat

● Heating with modulating electric heat

● Fixed or modulating Dampers (Outside, return)

MCS Diagnostics System(Frequency Drive Control)

● Evaporator fan speed based on static psi in duct

● Condenser fan speed based on discharge psi

● Evaporative condenser fans controlled on discharge psi

● Pumps based on differential psi out minus in

● Magnum supports 1008 samples of all inputs & outputs

MCS Diagnostics System(Trending)

● At a 10 min sample rate you have 1 week of trending data

● Sample rates are user set and can be as small as 1 sec

● An optional PCMI card can be installed for additional data

● A 1 gig PCMI card provides years of additional data

● BACnet IP, Modbus & Johnson N2 are native to Magnum.

MCS Diagnostics System(BMS)

● BACnet MSTP & Lontalk require an adapter.

● BACnet IP allows the BMS to ‘AUTO DISCOVER’

● It gets all Relay & Sensor names

● It provides the Magnum states

● It provides the last 5 alarms

● BMS allows Target Reset, Run/Stop, Demand & FLA Limit

MCS Diagnostics Compressor Protection

● High Discharge & Low Suction Pressure are tested

● High Compressor & Low Compressor Amps are tested

● High Discharge Temp & High Motor Temp are tested

● Low Oil Pressure & Low Oil Sump are tested

● Low Suction Superheat & Low Discharge Superheat are tested

● The Compressor Protection System is designed to protect the compressor at all cost. The micro runs a complete set of diagnostic tests every second.

● No Flow & Phase Loss can be set up to Lockout or auto recover

MCS Diagnostics Energy Efficiency

● On Tandem Scrolls Loading is 1 from each refrigerant circuit thus getting each coil wet & improving part load efficiency by 12 to 15 %

● Condenser control is by individual step providing better discharge psi control and allow higher energy efficiency

● Frequency drive control of condenser fans allows finer tuning of discharge psi, again allowing higher energy efficiency

● Using EXV’s provides improved efficiency at all load requirements, and with the Diagnostic package you get pro-active EXV control.

● With VFD controlled compressors you get additional savings and match the load and eliminating compressor cycling.

MCS Diagnostics Pro Active Control

● On high discharge pressure or low suction pressure the controller will unload, if the ability is there, to provide as much capacity as possible without shutting down. It will generate a warning alerting the user.

● On high discharge temperature the controller will unload if required or hold loading until the micro allows it to continue loading.

● On LOW AMPS the controller will post the alarm. This means a mechanical device is holding the control power off.

● The Magnum watches the slope of the controlling sensor and holds loading or unloading based on the rate of approach.

MCS Diagnostics Analysis(Part 1)

1. The next slide shows a ‘PRINT’ to file. The print to file is a spread sheet showing the current status of the Magnum.

o It shows Last Time On and Off, Run Hrs, Cycles today etc for each relay

o It provides sensor input values as well as min & max for today etc.

o It shows current values for analog outputs

o It shows all alarms with the time of occurrence

o It shows current set point values

With this road map you have the information to Diagnose the problem.

MCS Diagnostics Analysis ‘PRINT’ To File

MCS Diagnostics Analysis ‘PRINT’ To File(Expanded)

MCS Diagnostics Analysis(Part 2)

2. The next slide shows a Graph of MCS office with digital Scroll. The graph allows the user to select any group of inputs or outputs and plot them. This may be done through the trending data or it can be done in real time.

o It plots relay outputs & digital inputs at the top.

o It plots sensor inputs and analog outputs on the bottom

o The setup screen allows for selection of the scale and divisions of the scale

o It allows up to 8 digitals & 8 analogs to be plotted at the same time

With this information you can analyze the interaction of data allowing the user to Diagnose and make adjustments to the system..

MCS Diagnostics Analysis ‘Graph’

MCS Diagnostics Analysis (Part 3)

3. The next slide shows a print out of the ‘INFO’ from an alarm. The info is a spread sheet of the last 30 seconds of all sensor information related to this circuit. It is provided second by second.

o It provides suct psi, disc psi, oil diff, amps, suct tmp, disc, tmp..

o It provides motor temperature, EXV% if available

With this information you can diagnose the cause of the alarm.

MCS Diagnostics Analysis ‘Info’

MCS Diagnostics Analysis ‘Info’(Expanded)

MCS Diagnostics Touch Screen Graphics(System Overview)

MCS Diagnostics Touch Screen Graphics(Compressor 1)

MCS Diagnostics Touch Screen Graphics(Evap & Cond)

MCS Diagnostics Touch Screen Graphics(Pump Maunal)

MCS Diagnostics Touch Screen(Wiring Diagram)

MCS Diagnostics Touch Screen(Wiring Diagram Expanded)

● End MCS Diagnostics Package

● If you have any questions please contact MCS