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Conair MPA, MPW manual Activating Spi Communication, 3-16, Connect the host machine to the chiller

Models: MPW MPA

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ACTIVATING SPI COMMUNICATION

ACTIVATING SPI COMMUNICATION

NOTE: To disable SPI, use the setpoint ▲ or ▼ arrow to select Address. Press the ▼ arrow until OFF is displayed in the setpoint window.

See the APPENDIX for additional SPI programming information.

MicroKool portable chillers provide SPI compatible support for RS-485 serial communications with a host machine. You can use SPI communication to change or monitor the:

●Process temperature setpoint

●High and low temperature deviation alarms

●Process status (run and alarm conditions)

●Machine 1 status

●Machine 2 status

●Actual temperature to process

●Actual temperature from process

To use the SPI communication option, you must connect the chiller to the host machine and set the communication baud rate and node address using the setpoint select and adjustment buttons on the control panel.

1 Connect the host machine to the chiller.

Plug the male DB9 connector into the serial communica- tions port on the chiller.

2 Apply power to the chiller.

3 Enter the passcode, if necessary.

Hold the Setpoint Select button for 5 seconds. When the control displays 1 PaS, use the setpoint adjustment but- tons to enter the passcode.

4 Enter the node address.

Press the Setpoint Select button to choose Address. Then press the setpoint ▲ or ▼ arrow until the address you want appears in the setpoint display. The address may be set to any number from 32 to 254 (a hexadeci- mal integer between 20 and FE), as long as that number has not been assigned to another machine connected to the same network.

5 Set the baud rate to 12, 24, 48 or 96. The chiller must be set to send and receive data at the same baud rate as the host machine. Press the setpoint ▲ or ▼ arrow until the baud rate you want appears in the setpoint display window.

12 = 1200 bps	48 = 4800 bps
24 = 2400 bps	96 = 9600 bps

The green SPI status light on the control panel should flash when the unit is communicating. The LED will turn red, indi- cating an alarm, if SPI communication is not properly set up.

3-16

INSTALLATION

microKool Portable Chillers

UGH004/0999

Image 32

Conair MPA, MPW manual Activating Spi Communication, 3-16, Connect the host machine to the chiller, Enter the node address

Contents

Page Date Manual Number UGH004/0999 Serial numbers Model numbers INSTALLATION MAINTENANCETABLE OF CONTENTS INTRODUCTIONMAINTENANCE . . . . . . . . . . . . . . .continued TROUBLESHOOTINGPARTS/DIAGRAMS DIAGNOSTICSINTRODUCTION Purpose of the User Guide How the guide is organizedYour responsibilities as a user ATTENTION Read this so no one gets hurtYOUR RESPONSIBILITY AS A USER PURPOSE OF THE USER GUIDEHOW THE GUIDE IS ORGANIZED WARNING Electrical shock hazard READ THIS SO NO ONE GETS HURTPage What is the microKool chiller? Typical applications How it works Water-cooled models How it works Air-cooled models FeaturesSpecifications Water-cooled Specifications Air-cooled DESCRIPTIONTYPICAL APPLICATIONS WHAT IS THE MICROKOOLCHILLER? HOW IT WORKS WATER COOLED HOW IT WORKS AIR COOLED Typical air-cooled plumbing diagramFEATURES High Efficiency CompressorsMolded Plastic Reservoirs Water ConnectionsSPECIFICATIONS MPW WATER COOLED Dimensions inches mmWeight lb kg SPECIFICATION NOTESSPECIFICATIONS MPA AIR COOLED Performance characteristicsDimensions inches mm SPECIFICATION NOTESFreeze Protection Requirements by Unit Set Temperature Freezing Points of Aqueous Ethylene Glycol Solutionsto Process Set Temperature, degrees F Ethylene Glycol, % by weightINSTALLATION Unpacking the boxes Preparing for installationConnecting the water supply Connecting the main power Testing the installation Entering setpoint deviation parametersBOXES You are now ready to begin installationUNPACKING THE PREPARING FOR INSTALLATION Make sure the installation area providesInstall plumbing for process and cooling lines 1 Position the chiller as close to the process machine as possibleCONNECTING PROCESS AND WATER SUPPLY LINES 2 Install pipe to the rear of the chillerTools for installation 1 Remove the shipping pipe plug from the femaleCONNECTING THE MAIN POWER SUPPLY 4 Connect the power wires to the terminalsIMPORTANT! Before initiating power to the unit 1 Open the unit’s electrical enclosureTESTING THE INSTALLATION should perform this procedureApply power to the unit Replace the access panelENTERING SETPOINT DEVIATION PARAMETERS WARNING Electric shock hazard INITIAL SETUPDip switch Configuration CHANGING TEMPERATURE UNITS Disconnect and lock out main power to theChange Dip Switch 1 to Open the electrical enclosureDisconnect and lock out main power to the unit Set dip switch 3 to ONand switches 5 and Close the electrical enclosure and restoreSet dip switch 3 to OFF Close the electrical enclosure and restore power to the unitPress the RUN button to save the passcode Open the electricalSELECTING THE TEMPERATURE CONTROL POINT Disconnect and lockout power to the unitSet dip switches 3 and Set dip switch 5 to thePress the RUN button to save the control point SELECTING THE TEMPERATURE CONTROL POINTINSTALLATION the main power supplyINSTALLING THE AUTO START FEATURE 4 Insert the two power leads from the device3-14 IMPORTANT AlwaysFEATURE INSTALLING THE6 Set dip switch 4 to the ON position When Auto Start is enabled2 Apply power to the chiller 3 Enter the passcode, if necessary ACTIVATING SPI COMMUNICATION3-16 1 Connect the host machine to the chillerPC-1 control features PC-2 control features Starting the chiller Stopping the chiller Using the PC-2 pumpdownOPERATION Positioning the control panel Entering a passcodePC-1 CONTROL FEATURES AlarmSetpoint adjustment buttons Setpoint displayPC-2 CONTROL FEATURES Pumpdown On/OffSetpoint adjustment buttons AlarmPOSITIONING THE CONTROL PANEL To raise and swivel the control panelTo lower the control panel To detach the PC-2 control panelPress Setpoint to select the parameter you want to change ENTERING A PASSCODEPress again to enter the passcode STARTING THE CHILLER 2 Make sure the chiller tank is full of fluid3 Turn on the water supply to the chiller MPW 4 Enter the passcodeUSING THE PUMPDOWN FEATURE STOPPING THE CHILLERTo shut down the unit 1 Press Stop Press theEnable Auto Tune 4 Restore power to the unitDisconnect and lock out main power to the unit PERFORMING AN AUTO TUNEPERFORMING AN AUTO TUNE b a dInsufficient setpoint/process deviation Invalid PID constants were generatedPage MAINTENANCE Maintenance schedule Cleaning evaporators Cleaning condensersoutput monitors Calibrating temperature sensors Filling the tank Checking refrigerant charge Performing system testsPREVENTATIVE MAINTENANCE SCHEDULE 5-2 MAINTENANCEPREVENTATIVE MAINTENANCE SCHEDULE Quarterly every 3 monthsAnnually every 12 months CLEANING EVAPORATORS CLEANING CONDENSERSTo clean the evaporator cleaning chemicalsDESCRIPTION section for information on glycol mix- tures REFILLING THE TANKLocate the fill port at 2 the back of the chiller CHECKING REFRIGERANT CHARGE If the charge is low, recharge the systemSet dip switches 3 and Set dip switch 6 to ONPERFORMING SYSTEM TESTS then open the electrical enclosureEnable Test Mode KEY/DISPLAY TESTPress any key Press any key to clear all displaysINPUT TEST Connect all inputs to the systemPress any key to display the first test menus Select the Input Test menuOUTPUT TEST 5-10Connect all outputs to the system Select the Output Test menuSelect the OM Enable/Disable menu DISABLING OR ENABLING OUTPUT MONITORSPress the Setpoint to select the next output Save changes and exit the output menuCALIBRATING TEMPERATURE SENSORS 1 Enable Test Mode5-12 Release the Setpoint key6 Press the up key to begin calibrating 7 Wait until the control displays “don” or “bad.”Press Select 9 Exit Calibration ModeLOGGING OPERATING HOURS 5-14Index through test menus to the operating log Exit the Operating Hours LogTROUBLESHOOTING Before beginning A few words of caution How to identify the causeof a problem Shut down alarms Warning alarms System alarmsBefore you begin troubleshooting Find the wiring, plumbing and other diagramsIf an alarm is present, note any indicator lights BEFORE BEGINNINGHOW TO IDENTIFY THE CAUSE OF A PROBLEMA problem can trigger three types of alarms When an Alarm condition occursPossible cause Solution SHUT DOWN ALARMSAlarm Hi SAFLo SAF Possible cause SolutionSHUT DOWN ALARMS AlarmPHS Err Possible cause SolutionSHUT DOWN ALARMS AlarmPossible cause Solution SHUT DOWN ALARMSAlarm Is the overload faulty or set incorrectly?SHUT DOWN ALARMS Possible cause SolutionAlarm Refrigerant pressure is either too low or too highSHUT DOWN ALARMS Possible cause SolutionAlarm GPM=2.4 x chiller ton capacityAlarm WARNING ALARMSPossible cause Solution SYSTEM ALARMS SolutionCause ERR ERRCHILLER WILL NOT POWER UP Symptom6-12 Possible cause SolutionDisconnect and lockout the main power CHECKING AND REPLACING FUSESTo replace a blown fuse If fuses continue to failRESETTING OVERLOADS 1 Disconnect and lockout the main powerDisconnect auxiliary wiring on the overload module Set the module reset mode to M for manualDisconnect and lockout the main power supply 9 Reconnect the terminal blocks and wires to the new boardSet dip switches 7 and 8 to the correct unit type REPLACING THE MOTHERBOARDReverse this procedure to install the new con Disconnect the wires from the compressor conREPLACING THE COMPRESSOR CONTACTOR 6-161 Clear any alarms and restart the chiller 2 Watch for the following CHECKING THE UNLOADER VALVEDisconnect and lockout the power supply Disconnect freezestat unit wires from their terReverse the process to install the new unit. Be REPLACING THE FREEZESTATHOW TO CONTACT CUSTOMER SERVICE WE’RE HERE TO HELPBEFORE YOU From outside the United States, callEQUIPMENT GUARANTEE PERFORMANCE WARRANTY WARRANTY LIMITATIONS APPENDIX A-2APPENDIX B-1 SPI COMMANDS SUPPORTED BY THE CONAIR MICROKOOLSPI Command Pairs SPI STATUS WORDS Status, ProcessAPPENDIX B-2 CHILLER SPI COMMANDSStatus, Machine APPENDIX B-3CHILLER SPI COMMANDS SPI STATUS WORDSAPPENDIX B-4 CHILLER SPI COMMANDSSPI STATUS WORDS Status, MachinePARTS/DIAGRAMS PC-1 Wiring Diagram . . . . . . . .PD-2PC-2 Wiring Diagram . . . . . . . .PD-4 Parts Lists . . . . . . . . . . . . . . . .PD-6UGH004/0999 PD-2PC-1 WIRING DIAGRAM PD-3 PC-1 CIRCUIT BOARDPC-1 CIRCUIT BOARD JUMPERUGH004/0999 PD-4PC-2 WIRING DIAGRAM PD-5 PC-2 CIRCUIT BOARDPC-2 CIRCUIT BOARD JUMPER