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1. 13 MULTIPLE COMPRESSOR 22 14 SUGGESTED PROGRAMMABLE CONTROLLER PROGRAM DECODE MICROPROCESSOR OUTPUT DATA ttt 14 MICROPROCESSOR OUTPUT DATA 22 9 15 MICROPROCESSOR 0 16 COMMUNICATIONS PROTOCOL SPECIFICATIONS 16 TROUBLESHOOTING THE RWB II PLUS MICROPROCESSOR 442 44 410 20 GENERAL INFORMATION ccccesececsesesecececsesccucecsescsccucecscscsucecececssusucacscscsvsucacssaseucusavecscsusacanecavsusavacscsnsesacsestsesacavscsvstsseveeseseee 20 TROUBLESHOOTING FRICK SBC MICROPROCESSOR SYSTEM 20 TESTING MICRO PANEL 6 9 9 23 EPROM MEMORY I C CHIP REPLACEMENT 25 SBC BOARD sisia W 01 1 121 p 25 MICROPROCESSOR DISPLAY REPLACEMENT ertet entreteni
2. 92 OL IF STARTER CONTAINS MULTIPLE SEE NOTE 36187 JUMPER CONTACTORS RELAYS amp TIMERS SEE NOTE ADD SUPPRESSORS OR VARISTORS AT EACH COIL SEE NOTE C HOT WIRING IF ISOLATED p 3CR CONTACT IS USED i JUMP TO 6 SEE NOTE A 3 R SUPPRESSOR OR VARISTOR SEE NOTE A 1 INSTALLED OIL PUMP STARTER COIL SEE NOTE C TERMINALS IN JUNCTION BOXES FOR SPLIT SKID UNITS APPLICABLE ONLY IF REQUIRED TERMINALS IN JUNCTION BOX ON COMPRESSOR SKID 71 TERMINALS IN JUNCTION BOX _ON SEPARATOR SKID udi deme INDICATES DEVICES SUPPLIED ONLY WHEN OPTIONAL OR REQUIRED WIRING BY OTHERS ALL WIRING ENTERING CONTROL CENTER INCLUDING GROUND amp NEUTRAL TO BE 14 AWG STRANDED WIRES UNLESS SPECIFIED OTHERWISE TERMINALS IN CONTROL CENTER NO THREE PHASE WIRING SHALL ENTER OR LEAVE MICRO PANEL OR BE RUN IN SAME CONDUIT AS ANY MICRO CONTROL WIRING ENTERING OR LEAVING MICRO PANEL NO SINGLE PHASE OVER 300 VOLTS SHALL ENTER OR LEAVE MICRO PANEL FOR PROPER INSTALLATION OF ELECTRONIC EQUIPMENT SEE FRICK PUBLICATION 590 400 SB SERVICE MANUAL ALL CONTROL CENTER WIRING TO BE 16 AWG CUSTOMER S CONNECTIONS TO CONTROL CIRCUIT MINIMUM OPTIONS STRANDED WIRE UNLESS SPECIFIED OTHERWISE LINE NO TERM CIRCUIT DESCRIPTION FOR RWB II PLUS PACKAGE MICROPROCESSOR 3 1 2 GND CONTROL POWER TEST PROCEDURE S
3. SLIDE STOP CHANNEL 13 POSITION 3 GROUND LUG COMPRESSOR AUX 5 7 15 9 OIL PUMP SEL SW LIQUID INJECTION OIL HEATER RELAY 5 OIL PUMP SEL SW SPARE ON ALL UNITS EXCEPT 496 amp 676 CHANNEL 12 CHANNEL 11 CHANNEL 10 CHANNEL 9 CHANNEL 8 CHANNEL 7 CHANNEL 6 CHANNEL 5 CHANNEL 4 CHANNEL 3 CHANNEL 2 CHANNEL 1 SLIDE STOP DECREASE eiz MOTOR X y CHANNEL 16 jupe S COMPRESSOR START RELAY CHANNEL 15 CHANNEL 14 WHERE USED AS INLET BEARING FEED POINT TO POINT FIELD WIRING DIAGRAM 3 PHASE LINE NOTES T2 T8 GND FRICK SUPPLIED COMBINATION STARTER PACKAGE RWBII PLUS RXB PLUS RDB PLUS CONSULT STARTER AND MOTOR WIRING DIAGRAMS FOR EXACT WIRING CONFIGURATION Ti 12 TS GND T2 T3 GND 20 19 18 GND RXF 5 4 GND 20 19 18 8 5 4 FRICK MICRO ENCLOSURE 3 3 1 TS 3 PHASE SUPPLY TO MOTOR VaN GND PUMP MOTOR 1 REFER TO MOTOR NAMEPLATE FOR CORRECT MOTOR CONNECTION 2 SEPARATE CONDUIT RUNS FOR CONTROL VOLTAGE WIRING AND MOTOR CONNECTION WIRING 3 CONDUIT GROUNDS ARE NOT ACCEPTABLE 4 ALL WIRING MUST BE PER LATEST EDITION OF THE NEC AND LOCAL CODES 5 ALL CONTROL VOLTAGE WIRING TO 14 AWG STRANDED COPPER WIRE HI LEVEL CUTOUT AND OR OTHER FIELD SAFETY CUTOUTS AS REQUIRED SS SS Frick
4. 0 for pressure Ranges for PB DB CT pressure control setpoints allowable entries PB 02 05 10 15 20 25 DB 05 10 15 20 25 30 35 40 45 50 decimal is assumed eg 01 0 1 CT 05 10 15 20 25 30 Ranges for PB DB CT temperature control setpoints allowable entries PB 02 05 10 15 20 25 DB 01 through 30 decimal is assumed eg 01 0 1 10 15 20 25 30 RETURNED ANSWER new setpoint which was sent followed by a carriage return line feed BAD followed by the ID CR LF if unsuccessful 570 200 DEC 99 Maintenance TROUBLESHOOTING THE RWB Il PLUS MICROPROCESSOR This section contains information on troubleshooting and making corrections to the microprocessor and control cir cuits of the RWB II PLUS unit The section is composed of four parts a general information section a troubleshooting guide a repair procedure guide and a section with illustrative schematics and data GENERAL INFORMATION THE COMPONENTS WITHIN THE CAUTION microprocessor CONSOLE CAN BE INADVERTENTLY DAM AGED BY STATIC ELECTRICITY OR MISHANDLING ONLY QUALIFIED TECHNICIANS SHOULD DIRECTLY HANDLE THESE COMPONENTS 1 DO NOT REMOVE the microprocessor console cover or attempt to make corrections to the microprocessor power supply without shutting off the control power Accidental shorts can irreparably damage the SBC single board com puter or
5. 3 ON BATTERY PORT PORT 2 1 POWER SUPPLY P11 DIG I O EXPANSION ERICK REV D RWBII PLUS DIGITAL INPUT MODULES P9 ANALOG EXPANSION DIGITAL OUTPUT MODULES SLIDE STOP ZERO SLIDE VALVE SPAN SLIDE VALVE ZERO s s FUSES FU1 FU6 10 11 12 13 14 15 16 od 885889 59929 99 eoooooooooooo0Q AMPS SLIDE STOP SPAN MOTOR SLIDE STOP SLIDE SPARE PRES ECON PRES VALVE 2345 678 9 IP QDIBUALOUTPUTS 1 2 3 4 P5 P4 P3 DIGITAL 1 0 S S S S S S S S eooooooooooooooooocoooQoQ eoooooo0Q ze 0 mm gt gt E jj BLK BLK BLK BLK BLK BLK 7 5 e SLIDE VALVE LOAD 7 SLIDE VALVE UNLOAD es SLIDE STOP INCREASE 75 ts 24 REMOTE RUN 953 REMOTE LOAD REMOTE UNLOAD ol T 5 4 TE 3 TE 2 TE 1 NEUTRAL DATABIT1 95 DATABIT2 ea DATABIT3 e OIL LEVEL SWITCH HIVILIQINJ 5 SLIDE VALVE POSITION 1 ECONOMIZER 9 DATA
6. Low FLA This setpoint is used to determine if the cou pling has broken 20 is the default value Itis adjustable from 0 to 100 FLA Use the Step key to select a setpoint then enter the desired setpoint and press the Enter key TO CHANGE THE ADJUSTABLE SETPOINTS Adjustable Setpoints are stored in RAM random access memory and are easily changed in the field Adjustable Setpoints are lost if A CAUTION dicus is and the battery is not fully charged To facilitate reentry we suggest that a list of Adjustable Setpoints be affixed to one end of the microprocessor cabinet for reference For your convenience a blank Adjustable set points display which may be photocopied has been provided See page 10 NOTE The following procedure also applies to the changing of the Security Setback and Auto Cycle dis play setpoints 1 Press the CHANGE key to rotate the display to the Adjustable Setpoints display 2 Press the STEP key to move or step a set of flashing brackets through the various setpoints A setpoint is selected for change or update when it is enclosed by the flashing brackets NOTE The DAY indicator itself will flash when selected for change or update 3 Having selected the setpoint to be changed the NU MERIC KEYPAD may be used to enter the new setpoint NOTE All digits must be entered including zeros For example 01 0 NOTE The DAY AUX 1 and AUX 2 setpoints once selecte
7. YES 0111 111 This information is either 0 or 1 and represents what is be ing sent from the other compressor Consult Frick Company if additional information is required RWB II PLUS MICROPROCESSOR CONTROL OPERATION Page 13 570 200 DEC 99 HOW THE MICROPROCESSOR WORKS SUMMARY The Frick microprocessor has 4 major components and a va riety of sensors The major components are the SBC single board computer two display screens and the keyboard The SBC can be considered the brain of the microprocessor control console The SBC contains the logic center which provides the rules by which the microprocessor will oper ate the integrated circuit chips which store the burned in memory of how the compressor unit is to behave an analog input to convert VDC from the various sensors into computer binary language and RAM random access memory inte grated circuit chips to store information which can be readily changed by the microprocessor or as in the case of adjust able setpoints by the operator The SBC collects information processes the information and delivers instructions to the displays and to the output modules The SBC gathers information from several sources on the compressor unit Pressure transducers sense changes in pressure and return a variable DC voltage of 1 to 5 VDC to the SBC The signals are converted into binary code which the microprocessor understands The microprocessor scans th
8. 1002 will return 4 Byte s Setpoint Name Comment Future Future Mic amps stop load Mic amps force unload Ctf Recycle delay setpoint not time left Aux 1 O alarm 1 shutdown Aux 1 0 0 1 NC Aux 2 1 1 shutdown Aux 2 O NO 1 NC Future Future Future Future Future Future ID tenths position byte ID ones position byte Checksum of all data pos 1 to 31 CR code 13 LF code 10 0 null terminator char E NG INS osi mE QUERY SETPOINTS DATA 1003 will return 4 Byte s Setpoint Name Comment 4 4 1 4 4 2 2 2 1 4 4 2 2 2 1 1 1 1 Setback setpoint Future Setback active 1 yes 0 Autocycle comp start Autocycle comp stop Future Future Autocycle min sv Autocycle active 1 yes 0 Future Future Future Future Future Future ID tenths position byte ID ones position byte Checksum of all data pos 1 to 41 CR code 13 LF code 10 0 null terminator char 10 11 12 13 14 15 16 17 18 19 20 21 25 26 27 28 29 30 31 32 RWB PLUS MICROPROCESSOR CONTROL Page 18 OPERATION eS Frick CHANGE SETPOINTS COMMAND 01C Start command sequence Compressor ID code Change setpoint command New setpoint Xx New setpoint y g or h for gauge or inches The following is the complete list of the setpoints that may be changed while in the change setpoints command 01
9. With ONE Compressor Running If the load rises The lag compressor will start when its START setpoint is reached for the amount of time selected for the TIME setpoint and the lead compressor is running at 100 slide valve or running with the motor load inhibit or lead cutout or lead in recycle If the load falls The lead compressor will stop when its STOP setpoint is reached for the amount of time selected for the TIME setpoint With TWO Compressors Running If the load rises The lead and lag compressor will load independently If the load falls The lag compressor will unload to its MIN SV setpoint Then the lead compressor will unload to its MIN SV setpoint The lag compressor will stop when the suction pressure drops below the STOP setpoint for the amount of time selected for the TIME setpoint NOTE Be careful not to select both compressors as lead compressors or as lag compressors as improper operation will result NOTE One compressor will operate as a normal auto cycle compressor when any one of the following oc curs a Power is removed from one of the two compressors b Either of the compressors is NOT selected to AUTO or c If communications is lost between the compressors for any reason SS SSS Frick COMMUNICATIONS TROUBLESHOOTING Troubleshooting the communications Goto the FIXED SETPOINTS PAGE by using the CHANGE key and the key The display will ap
10. Capacity Control Setpoint y deleted for KpaA amp BarA ver 02 Change Low Pressure Cutout Setpoint y deleted for KpaA amp BarA ver 03 Change Low Pressure Alarm Setpoint y deleted for KpaA amp BarA ver 04xxx Change High Pressure Cutout Setpoint xxxx is used for KpaA amp BarA ver 05 Change High Pressure Alarm Setpoint xxxx is used for KpaA amp BarA ver 06 Change MLC Stop Load Setpoint 07 Change MLC Force Unload Setpoint 08 Change Recycle Delay Setpoint 09 Change CTF Setpoint 10xx Proportional Band PB 11 Dead Band DB 12xx Cycle Time CT 01 Compressor ID code PB 02 05 10 15 20 25 DB 05 10 15 20 25 30 35 40 45 50 decimal is assumed i e 01 0 1 CT 05 10 15 20 25 30 RETURNED ANSWER Axxxx The new setpoint which was sent followed by a carriage return line feed BAD followed by the ID CR LF if unsuccessful If the command was sent 01C01300g01 the capcity control setpoint would be changed to 30 0g and the returned answer is A300g followed by a carriage return line feed If the command sent was 01 0711001 the MLC force unload setpoint would be changed to 110 and the returned answer is A110 followed by a carriage return line feed If the command sent was 40100520002 the returned answer is BAD followed by the ID number and a carriage return line feed g or h must b
11. PROGRAMMABLE CONTROL 0 44 m p DATA CODE BIT 1 OUTPUT PROGRAMMABLE CONTROL 13 DATA CODE BIT 0 5 570 200 DEC 99 MICROPROCESSOR TELECOMMUNICATIONS The following details are typical and A CAUTION may or may not match the software supplied on your compressor The telecommunications capabilities are continuously being expanded and improved Therefore you MUST consult FRICK Company for the exact details on your particular unit s before developing system software to interface with your compressors The Frick RWB II PLUS Microprocessor comes with an on board telecommunications interface The telecommunications feature permits interfacing the microprocessor with a modem remote data communications terminal or master computer via RS 422 protocol In the case of a modem telephone lines are used for the actual transmission of data permitting communications from a remote location The components necessary to utilize the telecommunications feature will vary with the application Information concerning these items may be obtained from Frick Company Waynes boro Pa COMMUNICATIONS PROTOCOL SPECIFICATIONS All commands must be in ASCII CAPS to be recognized A compressor with an ID code of 00 is considered disabled ID Codes from 01 through 99 are valid and are recognized by the microprocessor The following is a complete list of available command types COMMAND
12. on the old board If they are present the display is the old style and the new board can be installed without modification RWB Il PLUS MICROPROCESSOR CONTROL MAINTENANCE Page 25 570 200 OM DEC 99 5 If the gray yellow wires are not present on the old SBC the machine is equipped with a new style display Resistor R6 must be removed from the new board by cutting the wire leads on either side of the resistor 6 Then install the modified replacement board in the panel MICROPROCESSOR DISPLAY REPLACEMENT The procedure to replace the microprocessor display is outlined below 1 Shut off control power 2 Remove the defective display s 3 Install the new display s 4 If present remove the grey yellow wires from P15 see the SBC wiring diagram for location to the display s as they are no longer needed 5 If resistor R6 is present on the SBC cut off the wire leads on both sides see the SBC wiring diagram for location and remove it This resistor is no longer needed OUTPUT FUSE REPLACEMENT 1 Shut off control power 2 Remove the microprocessor console cover 3 Identify the faulty fuse 4 Use a voltmeter to verify that no voltage is present on either side of the fuse 5 Remove the faulty fuse using a fuse puller or screw driver 6 Install a new plug type fuse Frick RWB Il PLUS MICROPROCESSOR CONTROL MAINTENANCE 570 200 OM DEC 99 Page 26 SBC WIRING DIAGRAM OFF
13. reported in degrees Fahrenheit will trigger a prealarm if the oil temperature equals or exceeds this setpoint LOW OIL TEMP CUT The Low Oil Temperature Cutout reported in degrees Fahrenheit will shut down the com pressor if the separator oil temperature equals or falls below this setpoint LOW TEMP ALARM The Low Oil Temperature Alarm reported in degrees Fahrenheit will trigger a prealarm if the separator oil temperature equals or falls below this setpoint HIGH STAGE or BOOSTER Compressor application indicator RWB Il PLUS MICROPROCESSOR CONTROL OPERATION Page 7 570 200 DEC 99 PRELUBE FULL LUBE or CYCLING Pump type will be indicated Microprocessor Program version LIQ INJ CON The Liquid Injection Control reported in degrees Fahrenheit will shut off the liquid refrigerant sup ply to the compressor if the oil temperature equals or falls below this setpoint FILTER The Oil Filter setpoint will trigger an alarm when the differential pressure across the oil filter equals or exceeds 25 pounds per square inch PSI for 15 seconds or longer OIL HEATER The Oil Heater setpoint reported in degrees Fahrenheit turns on the oil separator heater s when the oil temperature equals or falls below this setpoint whenever the compressor is NOT running Compressor Differential Cutout The differential cutout has been lowered from 55 Ib to 25 Ib Cutout will occur after five minutes To a
14. 3 Using a forced air heat source such as a heat gun or blow dryer slowly add heat to the probe and monitor the operating display until the temperature exceeds the alarm value and the alarm sounds 4 Continue adding heat until the cutout value is met and exceeded The cutout should be received without delay Reinstall TE 2 5 Clear the alarm and cutout Allow the recycle delay to elapse and proceed to the next test Never expose the probe to a direct A CAUTION open flame during test Rapid tem perature rise could cause the probe to stick or short in the closed position which would require the probe to be changed Disch Temp Alarm Cutout Comp Auxiliary 1 Remove 20 wire from terminal strip P3 and place a wire nut over the end 2 Push the RUN button 3 If the input 5 does not receive a signal from the Compres sor Auxiliary Contact the machine will cut out 16 seconds after 2CR is energized Replace the 20 wire Clear the Cutout Allow the recycle delay to elapse and proceed to the next test oof 570 200 OM DEC 99 RWB II PLUS MICROPROCESSOR CONTROL 24 MAINTENANCE Frick Pump Auxiliary 1 Remove 19 wire from terminal strip P3 and place a wire nut over the end 2 Push the RUN button 3 If input 6 does not receive a signal after 2 1 2 seconds from the time 3CR was energized a cutout will occur 4 Replace the 19 wire 5 Clear the cutout and proceed to the next t
15. CODE and DESCRIPTION Returns compressor status information Compressor start command Compressor stop command Compressor slide valve control command Compressors display screens command Return Pressures information Return Temperatures information Return full load amps information Enter Change setpoints mode R S The following is a detailed description of each command RETURN COMPRESSOR STATUS INFORMATION 011 Start of command sequence 01 Compressor ID code I Return Status information command RETURNED ANSWER ie O90RRRN340 Character Description Position of returned data 32 3 Slide valve position Remote Auto Manual slide valve Delay recycle Running Off Cutout Alarm Normal 39 10 Suction in PSIA Carriage return line feed 1 4 5 6 Rem Man Off Auto Compressor mode 7 8 RWB Il PLUS MICROPROCESSOR CONTROL Page 16 OPERATION COMPRESSOR START COMMAND 01R01 Start command sequence Compressor ID code Start compressor command ID code repeated for verification NOTE The compressor must be in the remote start mode for this command to be executed Returned answer A01 Character Description Position of returned data 1 Acknowledge of command sent 2 3 ID code of compressor Carriage return line feed COMPRESSOR STOP COMMANDS 01S01 Start command sequence 01 Compressor ID code S Stop compressor command 01
16. DATA READ CONTROL TEMPERATURE COMMAND JDTT Reads the control temp from TE 5 chan nel 5 Returned Answer 111 CR LF The represents the sign of the temperature The decimal is assumed between the third and fourth character ADDITIONAL DISPLAY DUMP COMMAND IDD1 Will dump SETPOINTS PAGE 1 new display IDDS Will dump ADJUSTABLE SETPOINTS std display IDDC Will dump AUTO CYCLE SETPOINTS std Pressure display IDDT Will dump AUTO CYCLE SETPOINTS new Temperature display CHANGE SETPOINTS COMMAND Start command sequence ID Compressor ID code C Change setpoint command numeric datum field y g or h for gauge or inches datum field or Sign datum field Command Prefix IDC datumID datum Description of setpoint 01 Capacity Control y is deleted for KpaA amp BarA 02 Low Press Cutout y is deleted for KpaA amp BarA O3xxxy Low Press Alarm y is deleted for KpaA amp BarA 04xxx High Press Cutout xxxx is used for KpaA amp BarA 05 High Press Alarm xxxx is used for KpaA amp BarA 06 MLC Stop Load 07 MLC ForceUnload 08 Recycle Delay O9xxx CTF 10xx Press Proportional Band 11xx Press Dead Band 12xx Press Cycle Time 13 xxx Temp Capacity Control 14 xxx Temp Low Temp Cutout 15 xxx Temp Low Temp Alarm 16xx Temp Proportional Band 17xx Temp Dead Band 18xx Temp CycleTime 19x Pressure Temperature mode x 1 for temp
17. For a de scription of the information presented by the Freeze display refer to the Operating display The Freeze display freezes the information of the Operating display AT THE MOMENT OF A COMPRESSOR CUTOUT The information on the Freeze display can help the operator to identify the cause of a fault which occurred when no one was present The Freeze display will retain the information generated by a cutout until a new cutout occurs or power is removed from the microprocessor Do not confuse the Freeze display A CAUTION with the Operating display In order to avoid confusion remember that the displayed information on the Operating display is constantly being updated and changed The Freeze dis play is fixed and FREEZE DISPLAY appears in the upper left hand corner of the display NOTE The Freeze display will appear as a blank screen when power is initially furnished to the unit and it will return to a blank screen anytime power is removed from the microprocessor Display for illustrative purposes only SS SSS Frick SECURITY DISPLAY SECURITY DISPLAY Thu 10 01 87 15 33 36 Setpoints Access Enabled Keyboard Enter Access Code Press F2 To Exit The F2 function key will call up the Security display The Security display allows the operator to either enable or dis able the microprocessor s keyboard and thereby prevent unauthorized tampering with the various adjustable setpoints When
18. RWB Il PLUS MICROPROCESSOR CONTROL MAINTENANCE 570 200 OM DEC 99 Page 27 MICRO COMPONENT PLACEMENT DIAGRAM FRONT PANEL REAR VIEW m I8 CONTRAST 26coND DISPLAY CONTRAST DISPLAY 26 COND 1 12 COND JUNCTION BOX FOR SPLIT SKID UNITS WITH VERTICAL SEPARATORS 2 REQUIRED POWER SUPPLY m P13 250 9 ANALOG EXPANSION SS SV POT POT POTPOT 12 3 4 SPAN ZERO SPAN ZERO ANALOG TERMS FRICK REV D RWB II PLUS DIG I O EXPANSION DIGHALINPUT 1 MODULES DIGITAL OUTPUT FOR DRAIN WIRE mE OF CHANNEL 4 DO NOT GROUND HERE FUSES FU1 FU16 DIG O TERMS ie 17 341135 ANALOG WIRING C T amp SBC POWER SUPPLY WIRING WIREWAY AC WIRING ONLY SP FU S IF CUST S HTR CONNECTION PLACE 230 VOLT LABEL HERE IF ONLY HEATERS ARE 230 VOLT ANALOG DRAIN WIRES CUSTOMERS 12 TERMS GROUND WIRE DOOR amp STUD CREE ON FRONT PANEL THIS STUD NOT IF GROUNDING
19. SETBACK DISPLAY Press Setpoint 25 3g Temp Setpoint 50 0F Tue 04 10 90 08 44 50 F1 To Exit Active No Stop Start Start Stop Mon Tue Wed Thu The Setback Display is accessed by pressing the F3 key PRESS SETPOINT The capacity control setpoint used when in the Setback mode and Pressure is selected as the capacity control desired TEMP SETPOINT The capacity control setpoint used when in the Setback mode and Temperature is selected as the capacity control desired NOTE To change the Setback setpoints refer to TO CHANGE THE ADJUSTABLE SETPOINTS The Auto Cycle display provides for independently adjustable setpoints to turn the compressor on and off in response to the suction pressure or as an adjustable setpoint to limit the minimum slide valve position The compressor can be started and stopped by the following pressure setpoints even if the capacity control is selected to temperature AUTO CYCLE PRESS CONTROL DISPLAY AUTO CYCLE PRESS Tue 04 10 90 08 44 57 DISPLAY Press F1 To Exit Suction Pressure Comp Start 99 0 00 min Comp Stop 29 0 hg Timer 00 min Min SV 50 Active No for Temp Menu NOTE To change the Auto Cycle setpoints refer to TO CHANGE THE ADJUSTABLE SETPOINTS RWB Il PLUS MICROPROCESSOR CONTROL OPERATION Page 11 570 200 DEC 99 SUCTION PRESSURE Constantly monitors and displays the suction pressure in pounds pe
20. a new ALARM or CUTOUT message will appear NOTE Use of the Emergency Stop Button may trip one or more alarm setpoints SHUTDOWN RECORD DISPLAY SHUTDOWN RECORD Thu 10 01 87 15 33 36 Use STEP key to advance PAGE Hi Oil Temp Cutout Wed 09 30 87 16 22 54 Comp Auxiliary Sat 08 22 87 09 47 02 Temp Cutout Thu 08 20 87 11 17 33 Auxiliary Mon 08 17 87 18 53 11 Temp Cutout Tue 07 14 87 06 22 09 Pres Cutout Fri 07 08 87 14 06 21 The Shutdown Record display keeps a record of the last six shutdowns cutouts This information will help troubleshoot persistent operational problems The most recent cutout will appear on the top line of the display with the oldest appearing on the last or bottom line When a cutout occurs all informa tion is moved down one line and the new cutout appears at the top When the display is full the oldest record is dropped off the display and is not retained in memory The information presented is echoed from the Annunciator display providing the type of cutout the day the date and the time NOTE This information will not be lost due to power failure FREEZE DISPLAY FREEZE DISPLAY Thu 10 01 87 15 33 36 Suction Disch 011 Filter Compressor 20 00 225g 170 g 01PSID OFF Mode 015 F 140 F 135 F RECYCLE V Ratio S V Pos Pump FLA Sep 132 F 4 6 090 OFF 080 off Auto Auto CUTOUT C C 20 0 g The Freeze display has the same appearance and contains the same information as the Operating display
21. alarm exists check to ensure that the current run ning suction pressure is indeed lower than the new alarm value 4 f an alarm was received go to the Cutout and set the value 5 psig or 5 in hg higher than the current running pressure 5 Once the cutout occurs go back and reset to the original values and clear the cutout and alarm Allow the recycle delay to elapse and proceed Note The Lo Suct Cutout has a 90 second delay Oil Pressure Alarm Cutout 1 Push the button and record the Oil Pressure value from the analog offset display Example 2 2 With the machine running and maintaining good even oil pressure push the button to access the analog offset Screen 3 Step to the oil pressure value and max it out to 9 This must be done to avoid a sensor fault failure 4 At the transducer manifold close the valve for the oil pressure transducer PE 1 and then open the vent valve which exposes the transducer to atmosphere 5 Once the time delays have expired 30 seconds for the alarm and an additional 10 seconds for the cutout an alarm and cutout will occur RWB Il PLUS MICROPROCESSOR CONTROL MAINTENANCE Page 23 570 200 OM DEC 99 6 Place valves back into their operating position and replace the pipe plug in the vent 7 Return to the analog offset screen and reset the offset back to the original value 8 Clear the alarm and cutout Allow the recycle delay to elapse then proceed to
22. in minutes NOTE Consult motor manufacturer for recommended setpoint ADJUSTABLE SETPOINTS PAGE 2 ADJUSTABLE SETPOINTS Page 2 Start Diff Press 100g Dead Band 1 0 Prop Band 10 Cycle Time 10 sec Low FLA 020 Dead Band This is a plus or minus value above or below the setpoint at which the compressor will neither load nor unload A dead band of 1 is the default value It is adjustable between 5 165 to 5 Ibs in increments of 5 The Step key is used to select this setpoint then press the Change key to toggle through the selections Proportional Band This setpoint is used to determine the amount of time the load unload solenoid is energized ac cording to how far from the setpoint the actual control pres sure is The smaller the number the longer a load unload signal will be sent 10 is the default value Selections are 2 5 10 15 20 or 25 The Step key is used to select this setpoint then press the Change key to toggle through the selections Display for illustrative purposes only RWB Il PLUS MICROPROCESSOR CONTROL Page 6 OPERATION ER Frick Cycle Time Cycle time is the amount of time between the beginning of each load unload response Ten seconds is the default value Cycle Time is adjustable between 5 and 30 seconds in 5 second intervals The Step key is used to select a setpoint then press the Change key to toggle through the selections
23. is as follows CAP CONTROL The Capacity Control setpoint reported in pounds per square inch gauge g or inches of mercury hg controls the loading and unloading of the compressor when SV POS is in the automatic AUTO mode LO SUCT CUTOUT The Low Suction Pressure Cutout re ported in pounds per square inch gauge g or inches of mer cury hg will shut down the compressor if the suction pressure drops to this limit or lower for 120 seconds or longer LO SUCT ALARM The Low Suction Pressure Alarm reported in pounds per square inch gauge g or inches of mercury hg will trigger a prealarm if the suction pressure drops to this limit or lower HI DISCH CUTOUT The High Discharge Pressure Cutout reported in pounds per square inch gauge g will shut down the compressor if the discharge pressure equals or exceeds this setpoint HI DISCH ALARM The High Discharge Pressure Alarm reported in pounds per square inch gauge g will trigger a pre alarm if the discharge pressure equals or exceeds this setpoint M L C STOP LOAD The Motor Load Control Stop Load reported as a percentage of the motor full load amps FLA will prevent the compressor slide valve from loading when the setpoint is equaled or exceeded NOTE Consult motor nameplate for recommended setpoint M L C FORCE UNLD The motor Load Control Force Un load reported as a percentage of the motor full load amps FLA will force the compressor to unl
24. solder IC chip extraction and insertion tools Grounding strap Static free grounded work surface Available from Frick Order kit 451862 TROUBLESHOOTING FRICK SBC MICROPROCESSOR SYSTEM REFER TO WIRING DIAGRAMS PROBABLE CAUSES and CORRECTIONS DISPLAYS ARE INOPERATIVE microprocessor Check the 10 amp fuse 2FU which controls all voltage going to the Shut off power to the microprocessor Remove the console cover and confirm that all cable and wire connections are made OIL PUMP DOES NOT START Verify that the Oil Pump HAND OFF AUTO switch 1SS is in the AUTO position and that the Emergency Stop Button is not depressed Output 11 controls the Oil Pump Starter Relay CR when the AUTO mode If HAND is selected on 1SS Output 11 will not have any effect on the operation of the oil pump starter If AUTO has been selected and the oil pump does not start check for 120VAC between Wires 39 and 2 If 120VAC is not found when the LED for Output 11 is on check the fuse FU11 If the problem persists check the control relay 3CR The Oil Pump Starter Auxiliary Contact switches voltage to Input 6 Wires 28 and 2 when the auxiliary contacts are closed and the AUTO mode is selected on 1SS If the Input does not turn on and voltage is present at Input 6 consult Frick Company SS SS Frick RWB Il PLUS MICROPROCESSOR CONTROL 570 200 OM DEC 99 MAINTENANCE Page 21 TROUBLES
25. AUTO CYCLE TEMP CONTROL DISPLAY AUTO CYCLE TEMP Tue 04 10 90 08 45 40 DISPLAY Press F1 To Exit Cap Control Temperature 50 5 Comp Start 50 0 F Timer 01 min Comp Stop 20 0 Min SV 50 Active Yes Timer 01 min for Press Menu The Auto Cycle Temperature Control Display is accessed by pressing F4 and then the keys NOTE The compressor can be started and stopped by the following tempera ture setpoints even if the capacity control is selected to pressure CAP CONTROL TEMPERATURE Constantly monitors and displays the suction temperature COMP START The CC capacity control Temperature must be greater than or equal to the START setpoint in order to start the compressor This setpoint works in con junction with the setpoint located to the right of it on the display Start TIMER This is a time delay used to start the compres sor The timer only accumulates time whenever the CC Tem perature rises to or above the START setpoint and will reset if the CC Temperature drops below the START setpoint Display for illustrative purposes only 570 200 DEC 99 COMP STOP The CC Temperature must be less than or equal to the STOP setpoint in order to stop the compressor This setpoint works in conjunction with the setpoint located to the right of it on the display STOP TIMER The stop TIMER is a time delay used to sto
26. COMPRESSOR START Compressor Start up will bring the compressor back on line when the suction pressure rises to the displayed setpoint COMPRESSOR STOP Compressor Stop will shut down the unit if the suction pressure drops to or below the displayed setpoint limit NOTE This limit must be set higher than Low Suction Pressure Cutout and the Low Suction Pressure Alarm setpoints MINIMUM SLIDE VALVE Minimum Slide Valve Position shown as a percentage will limit the slide valve position to the displayed setpoint AUTO CYCLE ACTIVE Indicates whether Auto Cycle is ac tive YES or not active NO Press the CHANGE key while at this setpoint to change the status Upon deactivation the compressor will return to the previous mode of operation ANALOG OFFSET DISPLAY ANALOG OFFSET Suc Disch Oil Sep Filt Spare Econ Temp 0 0 0 0 0 0 Pres 0 0 0 0 0 0 Channel 10 12 13 Press 0 0 0 The Analog Offset Display is accessed by pressing key All analog values can be offset or 3 to 9 units depend ing on which value is being adjusted Use the STEP key to step to the desired setpoint Press the CHANGE key to change the value of the offset by 1 The actual analog value will be displayed on the top line of the display The Econ and channels 10 12 13 are displayed but do not pertain to the standard program 570 200 DEC 99 Sensor Fault Failure A Sensor Fault cutout was added to the program to
27. ECON PRESS CHANNEL 10 1 5 VDC SPARE BALANCE PISTON REG RWB II 496 8 676 ONLY IF REQUIRED CHANNEL 9 1 5 VDC SUCT PRESS CHANNEL 8 1 5 VDC DISCH PRESS CHANNEL 7 1 5 VDC FILTER PRESS IF REQ D CHANNEL 6 1 5 VDC OIL PRESS RWB Il PLUS MICROPROCESSOR CONTROL 570 200 OM DEC 99 Frick MAINTENANCE Page 31 MICROPANEL ASSEMBLY WIRING DIAGRAM 22 AWG TWISTED PAIR 2000 FT MAX DISTANCE e WHITE CHANNEL 5 BLACK 4 BLACK X SPARE TEMP RNC Ue Nep REMOTE TEMPERATURE CABLE 5 CAPACITY CONTROL OPTIONAL WIRING BY OTHERS SEE NOTE 2A COLOR MAY VARY TYPICAL o WHITE CHANNEL 4 TE 4 6 BLACK BLACK 5 SEP TEMP CABLE 4 WHITE CHANNEL 3 BLACK OIL TEMP CABLE 3 WHITE BLACK CHANNEL 2 DISCH TEMP CABLE 2 WHITE CHANNEL 1 BLACK SUCT TEMP CABLE 1 ALL ANALOG LOW VOLTAGE WIRING TO BE RUN IN SEPARATE CONDUIT FROM ALL OTHER WIRING TEMPERATURE WIRING SPECIFICATIONS IF TEMPERATURE SENSOR WIRING IS IN CONDUIT USE 8761 BELDEN CABLE OR EQUAL IF OPEN WIRING USE 8760 BELDEN CABLE OR EQUAL GROUND DRAIN WIRE AT PANEL END ONLY ON 4 SENSORS GROUND AT SENSOR END ONLY ON 1 SENSORS INSULATE DRAIN WIRE AT OPPOSITE END 2000 FT MAX DISTAMCE NOTE 2A SPECIFICATIONS FOR TEMP CAPACITY CONTROL SETPOINT RANGE 50 F TO 100 F TEMP PROBE SIZE 31 DIA x 1 LONG 304 S S WITH 2 24 LEADS MOUNTING I
28. EE MMIB NO 4 11 10 4 3 1A 2A GND OIL HEATER POWER OPT FOR INSTALLATION OF MICROPROCESSOR BOARD 63 82 OIL PUMP STARTER SEE NOTE OR AND EPROMS SEE MMIB NO 4 11 10 11 63 37 8 OIL PUMP STARTER ISOLATED CONTACT FOR HIGH POT TEST PROCEDURE SEE MMIB NO 4 11 10 7 60 18 2 COMPR STARTER SEE NOTE A OR SEE 640D0019 FOR STANDARD CONTROL CENTER ASSEMBLY 60 36 18 COMPR STARTER ISOLATED CONTACT 30 5 19 OIL PUMP AUX 31 5 20 COMPRESSOR AUX SHT 2 3 4 34 CURRENT TRANSFORMER 570 200 DEC 99 30 RWB Il PLUS MICROPROCESSOR CONTROL MAINTENANCE aS a Frick MICROPANEL ASSEMBLY WIRING DIAGRAM C T MOUNTED IN STARTER OR MOTOR JUNCT BOX BY OTHERS A a MOTOR AMPS 101 N ONE PHASE _ _ OF MOTOR 0 5 AMP AC SECONDARY POT 1 SLIDE STOP POSITION POTENTIOMETER POT 2 CABLE 15 SLIDE VALVE POSITION POTENTIOMETER CABLE 14 CABLE 9 RED CABLE 8 WHITE BLACK RED WHITE BLACK CABLE 6 DO NOT GROUND PE S AT PANEL TYPICAL CHANNEL 16 0 5 AMP AC MOTOR AMPS SEE RWB MANUAL FOR C T WIRE SIZING CHANNEL 15 SLIDE STOP CHANNEL 14 SLIDE VALVE CHANNEL 13 1 5 VDC SPARE CHANNEL 12 1 5 VDC SPARE PRESS CHANNEL 11 1 5 VDC
29. Form 570 200 DEC 1999 aS Sa File SERVICE MANUAL Section 70 Replaces 570 200 99 Dist 3 3a 3b 3c RWBIDW MICROPROCESSOR CONTROL THIS MANUAL CONTAINS OPERATION AND MAINTENANCE INSTRUCTIONS READ THOROUGHLY BEFORE BEGINNING INSTALLATION FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN DAMAGE OR IMPROPER OPERATION OF THE UNIT Please check www frickcold com for the latest version of this publication 570 200 DEC 99 RWB Il PLUS MICROPROCESSOR CONTROL m Page 2 OPERATION MAINTENANCE Frick Contents MICROPROCESSOR CONTROL 0 3 KEYS AND KEY 5 8 9 4 TO CHANGE THE ADJUSTABLE 6 HOW DETERMINE ADJUSTABLE SETPOINTS 7 TEMPERATURE PRESSURE CONTROL PROGRAM 9 9 10 WEADSLAG OPTION e te en md Mi le weet c reme 12 COMMUNICATIONS 5 6 13 HOW THE MICROPROCESSOR WORKS 5
30. HEN REQUIRED ALL HEATER WIRING TO BE 14 AWG ALL NEUTRAL EXP 2 amp 2A WIRING TO BE WHITE EXCEPT WHERE NOTED PROGRAMMABLE CONTROL DATA CODE BIT 3 PROGRAMMABLE CONTROL DATA CODE BIT 2 PROGRAMMABLE CONTROL DATA CODE BIT 1 PROGRAMMABLE CONTROL DATA CODE BIT 0 BALANCE PISTON ON RWB S 316 676 IF REQ D SPARE ON ALL OTHERS OIL PUMP START RUN 63 OIL HEATER 3 4 5 ALARM PRE amp CUTOUT RELAY amp OR LAMP OPTIONAL ECONOMIZER IF REQ D HI VI INJ IF REQ D LIQUID INJECTION IF REQ D FOR SECOND LIQ INJ IF REQ D SLIDE STOP DECREASE SLIDE STOP INCREASE SLIDE VALVE UNLOAD SLIDE VALVE LOAD COMPR START RUN 60 40 IF REQ D AUX 2 SEE NOTE B AUX 1 SEE NOTE B OIL PUMP AUX COMPRESSOR AUX COMPR RUN TIME METER LIQUID INJECTION PRESSURE REGULATOR ONLY ON BOOSTERS WITH LIQ INJ MAIN OIL INJ FEED FULL amp CYCLING OIL PUMP ONLY USED WITH VERT SEP RS REMOTE UNLOAD REMOTE LOAD REMOTE START RUN STOP OIL LEVEL NOT REQUIRED WITH FULL LUBE OIL PUMP E ie RWB Il PLUS MICROPROCESSOR CONTROL 570 200 OM DEC 99 Frick MAINTENANCE Page 29 MICROPANEL ASSEMBLY WIRING DIAGRAM POWER ASSIST IS ADDED AT TIME OF 2 MANUFACTURE IF 2 SPECIFIED 6 717 0 15 SEC POWER ASSIST TR 41 INTERVAL Aro POWER ASSIST SEE NOTE C NOTE A IF COMPR MOTOR STARTER IS A FRICK SUPPLIED STARTER CONFORMS TO FRICK STARTER SPECS WIRE AS SHOWN ON LINE 60 ONLY JUMP TE
31. HOOTING FRICK SBC MICROPROCESSOR SYSTEM Continued OIL PUMP IS RUNNING BUT THE COMPRESSOR DOES NOT START COMPRESSOR AUXILIARY SHUTDOWN OIL HEATERS DO NOT OPERATE SLIDE VALVE DOES NOT LOAD and or UNLOAD SLIDE STOP DOES NOT INCREASE and or DECREASE The HAND OFF AUTO Oil Pump Selector Switch 1SS controls oil pump operation and must be in the AUTO position before the compressor can be started Verify that the Slide Valve has unloaded to 5 or less If the Slide Valve has not unloaded troubleshoot the hydraulic system Compressor will not start until the Slide Valve is unloaded Output 1 controls the motor starter Check between terminals 38 and 2 for 120VAC If 120VAC is not found when the LED for Output 1 is on check the 1 5 amp fuse FU1 Output 1 controls the Compressor Start Relay 2CR If the compressor does not start and the LED for Output 1 is on check the fuse FU1 If the problem persists check the interposing relay 2 The Compressor Starter Auxiliary Contacts turn on Input 5 when they are closed These contacts are located on the Compressor Starter The oil heaters should operate only when the compressor is NOT running and the oil in the separator sump is cold If the oil heaters do not work check fuse 1FU 15 amp If the fuse is not blown check between Wires 25 and 2 and between Wires 26 and 2 for 120VAC If 120VAC is not found check between wires 25 and 26 If 120VAC is found between wires 25 an
32. ID code repeated for verification NOTE The compressor must be in the remote start mode for this command to be executed Returned answer 01 Character Description Position of returned data 1 Acknowledge of command sent 2 3 ID code of compressor Carriage return line feed SLIDE VALVE CONTROL COMMANDS 01VLXX 01VUXX 01VS Start command sequence 01 Compressor ID code V Compressor control command L Load Slide valve command Unload slide valve command 00 Turns selected output off 01 to 15 Turns selected output on for XX seconds 99 Turns selected output on Return slide valve position value If the command was 01VLOO then the load slide valve output on compressor 1 would be turned off If the command was 01 105 then the load slide valve output on com pressor 1 would be turned on for 5 sec onds and would then automatically turn off NOTE the slide valve must be in the remote mode for this command to be executed RETURNED ANSWER for L or U commands A01 Character Description Position of returned data 1 Acknowledge of command sent 2 3 ID code of compressor Carriage return line feed RETURNED ANSWER for S command ie 090 1 2 3 Slide valve position Eum Frick SS SSS Frick COMPRESSOR DISPLAY SCREENS COMMAND 01DXN Start command sequence 01 Compressor ID code D Compressor control command Operating display Adjustable setpoints display Adjustable set
33. ISABLED COMMAND WAS SELECTED THE ACCESS CODE IS 00000 LOST OR FORGOTTEN ACCESS CODE Consult Frick Company for assistance SETBACK DISPLAY SETBACK DISPLAY Thu 10 01 87 15 33 36 Press F1 To Exit Setback Setpoint 05 0 g Active No Start Stop Start Stop Fri 16 00 Sat Sun Display for illustrative purposes only RWB Il PLUS MICROPROCESSOR CONTROL OPERATION Page 9 570 200 DEC 99 The F3 function key will call up the Setback display The Setback feature enables automatic operation at two separate suction conditions on a preset time schedule Having entered the desired Setback setpoint enter the start and stop time or times and select Active Yes or No NOTE To change the Setback setpoints refer to TO CHANGE THE ADJUSTABLE SETPOINTS AUTO CYCLE DISPLAY Thu 10 01 87 16 33 36 Press 1 To Exit AUTO CYCLE DISPLAY Suction Pressure Compressor Start Compressor Stop Minimum Slide Valve Auto Cycle Active The Auto Cycle display provides for independently adjustable setpoints to turn the compressor on and off in response to the suction pressure or as an adjustable setpoint to limit the minimum slide valve position NOTE To change the Auto Cycle setpoints refer to TO CHANGE THE ADJUSTABLE SETPOINTS SUCTION PRESSURE Constantly monitors and displays the suction pressure in pounds per square inch gauge g or inches of mercury hg
34. N WELL IS DESIRABLE USE HEAT TRANSFER COMPOUND WIRE AS SHOWN IN SEPARATE CONDUIT FROM ALL OTHER WIRING USE BELDEN 8761 CABLE OR EQUAL TEMP PROBE FRICK P N 640A0035H01 WELL FOR ABOVE 3 4 MPT WELL CONNECTION 1 2 FOR CONNECTION BOX P N 990A0062H01 HEAT TRANSFER COMPOUND P N 11100831807 SEE 640C0031 FOR TEMPERATURE SENSOR ASSEMBLY 640C0031G11 OPTIONAL WIRING FOR LEAD LAG SEQUENCING SBC RS 422 ue RS 422 PORT2 9 d PORT 2 FRONT PANEL UNIT A 8 UNIT B TOP DISPLAY USE BELDEN 8777 OR EQUAL 3 TWISTED PAIRS BOTTOM bi COLOR CODING SHOWN IS BELDEN 8777 DISPLAY 4 26 COND RIBBON CABLE NO CONNECTION ON 230 RS 422 WIRING SHALL BE SEPARATE 10 FOR GROUNDED CIRCUITS FROM ALL OTHER WIRING PAD 12 COND RIBBON CABLE Bis WIRED AT FRICK IF BOTH UNITS riso edooo ARE ON THE SAME SKID STUDOj GREEN WIRE STUD CI SET SW 1 CORRECT VOLTAGE WRAP WIRES THROUGH TOROID TWO 2 TIMES ALL IN THE SAME DIRECTION RING P1 26 COND RIBBON CABLE Q NET network technology Make the Connection with QUANTUM Take full advantage of Q NET technology with all Frick products Quantum Cond Vesse Quantum AcuAir Remote PC Quantum D Evaporator Air Unit Air Unit System integrati
35. OCESSOR CONTROL OPERATION Page 17 570 200 DEC 99 RETURN TEMPERATURES COMMAND 01TX Start command sequence 01 Compressor ID code T Return temperature command Return suction temperature Return discharge temperature Return oil temperature Return separator temperature Return all temperatures as a string of data If the command was 01TS then the micro processor would dump the suction temperature RETURNED ANSWER XXX 3 characters followed by a carriage return line feed If using the A command then the returned data would be XXXXXXXXXXXXX 13 characters followed by a carriage return line feed NOTE The S command will return four 4 characters followed by a carriage re turn a line feed or xxx QUERY SETPOINTS DATA 1001 will return Pos Byte s Setpoint Name Comment 1 Always 0 2 9 4 5 4 Ccsp 3 chars followed by gor h Low suct press cutout 3 chars followed by g or h Low suct press alarm 3 chars followed by g or h 6 7 8 9 4 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Prop band Dead band Cycle time Future Future Future Future Future Future Hpco Hpa ID tenths position byte ID ones position byte Checksum of all data pos 1 to 47 CR code 13 LF code 10 0 null terminator char 38 39 40 41 42 43 44 45 AANNNAAANNN 570 200 DEC 99 QUERY SETPOINTS DATA
36. RM 6 TO 36 IF 2CR IS USED AS A ISOLATED CONTACT WIRE AS SHOWN BETWEEN THE HOT amp NEUTRAL LINES ON LINE 60 SAME NOTES APPLY TO OIL PUMP STARTER CIRCUIT ON LINE 63 NOTE B FOR OPTIONAL ALARMS amp SHUTDOWNS HIGH LEVEL SHUTDOWN ETC WHEN REFERENCING MICRO POWER TO OPERATE COMPR MOTOR STARTER PARAGRAPH 1 NOTE A REMOVE JUMPER 36 TO 42 amp INSERT ISOLATED CONTACT S JUMP 42 TO EITHER 29 OR 30 AUX 1 OR AUX 2 PROGRAM AUX TO SHUTDOWN NORMALLY CLOSED WHEN USING 2CR AS A ISOLATED CONTACT PARAGRAPH 2 NOTE A REMOVE JUMPER 36 TO 42 amp INSERT ISOLATED CONTACT S A SEPARATE ISOLATED CONTACT SHOULD BE INSERTED BETWEEN 5 amp 29 OR 30 PROGRAM AUX AS ABOVE SEE 1 PSH WIRING BELOW FOR EXAMPLE AUX 1 amp AUX 2 CAN BE PROGRAMMED TO ALARM OR SHUTDOWN NOR OPEN OR NOR CLOSED NOTE C A SURGE SUPPRESSOR OR MOV TO BE INSTALLED ACROSS ALL INDUCTIVE LOADS IN CONTROL CENTER SURGE SUPPRESSOR SUPPRESSOR SPECIFICATIONS RC NETWORK CONSISTING OF A 1 MED CAPACITOR 600 VDC IN SERIES WITH A 47 OHM RESISTOR USE ELECTROCUBE RG2031 3 6 OR EQUAL CX VARISTOR METAL OXIDE VARISTOR MOV SPECIFICATIONS GE V130LA10A OR EQUAL FOR 115 VOLTS GE V250LA10A OR EQUAL FOR 230 VOLTS HIGH DISCH PRESS SWITCH CUTOUT OPTION 1 PROGRAM AUX 1 AS 5 0 49 NOR CLOSED HPC SHUTDOWN 42 Hor WIRING IF ISOLATED NEU aoa USED JUMP TO 6 SEE NOTE COMPR MOTOR STARTER
37. WASHER amp STUD ON SIDE ARE USED 1 AT STOCK LEVEL PLACE 115 VOLT LABEL HERE 115 VOLTS PLACE 230 VOLT LABEL OVER IT IF CONTROL amp HEATERS ARE 230 VOLTS GROUNDING WASHER COPPER CONDUCTORS ONLY 42 TERMINALS INDICATES DEVICES SUPPLIED ONLY WHEN OPTIONAL OR REQUIRED WIRING BY OTHERS CUSTOMER S CONTROL POWER CONNECTION RWB Il PLUS TELECOMMUNICATIONS COMPUTER TO RWB Il MICROPROCESSOR WIRING DIAGRAM COMPUTER COMMUNICATIONS PORT AC 422 AC 422 Asychronous Adapter Card Pinout 3 Ground RX Receive RX Receive TX Transmit TX Transmit 0 RS 422 Communication Ports 1 and 2 8 bit None or Even 1 Bit Word Parity Stop COMPRESSOR 1 PORT 1 COMPRESSOR 2 PORT 1 RWB II PLUS MICRO Ports 1 and 2 Pinout 3 2 1 5 4 7 6 9 8 Ground CTS Clear To Send CTS Clear To Send RX Receive RX Receive RTS Request To Send RTS Request To Send TX Transmit TX Transmit NOTE Jumper Pin 1 to 6 and Jumper Pin 2 to 7 If RTS is CTS not used 570 200 OM DEC 99 Page 28 HOT HOT 12 RWB Il PLUS MICROPROCESSOR CONTROL MAINTENANCE aS F
38. croprocessor will shut down the compressor The microprocessor will indi cate CUTOUT on the Operating display and the information present on the Operating display at the moment of cutout will be stored and can be retrieved by rotating displays to the Freeze display Additional information will be available through the Annunciator and Shutdown Record displays Display for illustrative purposes only 570 200 OM DEC 99 A typical example of how the microprocessor responds can be illustrated by the responses generated by the micro processor as oil temperature increases Assume that the ambient temperature and compressor unit temperature are 45 F and you have just pressed the RUN key to start the compressor unit AT 45 F The microprocessor receives information that the oil tempera ture is below 49 F the Low Oil Temperature Cutout setpoint and and shuts down the unit The microprocessor will prevent the compressor package from running The microprocessor also instructs the oil heater s output to energize the oil heater s AT 50 F When the oil temperature reached 50 F the microprocessor would allow the Low Oil Temperature Cutout to be cleared and the compressor unit could now be started Assume that the RUN key has been pressed and that the compressor has now started The Low Oil Temperature Alarm would still be engaged and cannot be cleared until oil temperature exceeds 58 F The oil heater s shut off on compressor
39. d are changed or updated by pressing the CHANGE key NOTE Certain setpoints may be reported in either pounds per square inch gauge g or inches of mercury hg To toggle between g and hg having selected the setpoint press the key to toggle between g and hg 4 In the event that an incorrect setpoint is keyed in all or part press the CLEAR key to restore the original setpoint Pressing the CLEAR key a second time will eliminate the flashing brackets 5 Having keyed the desired setpoint press the ENTER key The new setpoint will be entered and the flashing brackets will move or step to the next setpoint NOTE A setpoint entry outside the parameters of the Adjustable Setpoint display will be refused and the original Adjustable setpoint will be restored NOTE To clear any time values STEP to the desired setpoint press CHANGE and then press CLEAR SS SS Frick HOW TO DETERMINE ADJUSTABLE SETPOINTS Adjustable Setpoints should reflect values compatible with normal system operation Too high a Low Suction Pressure Alarm setpoint may cause nuisance prealarms Similarly cutout setpoints should not fall within what are considered normal plant operation As a rule of thumb set the Low Suc tion Pressure Alarm 5 PSIG lower than the lowest normal suction pressure The Low Suction Pressure Cutout should be 5 to 10 PSIG lower than the Low Suction Pressure Alarm setpoint The High Discharge Pressure C
40. d 26 the Oil Heater Relay is defective Next check the voltage between Wires 9 and 2 If 120 VAC is present the Oil Heater Relay is defective If you do not read 120VAC between Wires 9 and 2 when the LED for output 10 is on check the fuse FU10 Verify that the Slide Valve is in the AUTO mode and that capacity control is calling for loading or unloading AUTO L or AUTO U will appear on the Operating display Output 2 controls the Slide Valve Load Solenoid If 120VAC is found across Wires 17 and 2 the Slide Valve Load Solenoid should be energized If not the solenoid is defective If 120VAC is not found when the LED for Output 2 is on check the fuse FU2 Output 3 controls the Slide Valve Unload Solenoid If 120VAC is found across Wires 16 and 2 the Slide Valve Unload Solenoid should be energized If not the solenoid is defective If 120VAC is not found across Wires 16 and 2 when the LED for Output 3 is on check the fuse FU3 NOTE Verify that the proper setpoint has been programmed into C C Capacity Control on the Adjustable Setpoints display Verify that the Slide Stop is in the AUTO mode and that the Vi Ratio is calling for a Vi increase or a Vi decrease AUTO or AUTO D will appear on the Operating display Output 4 controls the Slide Stop Increase Solenoid If 120VAC is found across Wires 15 and 2 the Slide Stop Increase Solenoid should be energized If not the solenoid is defective If 120VAC is not found acro
41. e START setpoint and will reset if the pressure drops below the START setpoint STOP The suction pressure must be less than or equal to the STOP setpoint in order to stop the compressor This setpoint works in conjunction with the Timer setpoint located to the right of it on the Auto Cycle setpoints screen TIMER This is a time delay used to stop the compressor The timer only accumulates time whenever the pressure drops to or below the STOP setpoint and will reset if the pressure rises above the STOP setpoint MIN SV This setpoint is the minimum slide valve position shown as a percentage it will limit the slide valve position to the displayed setpoint LEAD This setpoint assigns the compressor as the lead or the lag unit Press the CHANGE key while at this setpoint to change the status RWB II PLUS MICROPROCESSOR CONTROL Page 12 OPERATION Frick ACTIVE This setpoint indicates whether the Auto Cycle Mode is active or not Press the CHANGE key while at this setpoint to change the status OPERATION For operation of the LEAD LAG sequence both units must be in Auto Cycle compressor mode one compressor micro selected as the LEAD compressor the other compressor selected as the LAG compressor and the slide valves in Auto mode With NO Compressor Running The lead will start when its START setpoint is reached for the amount of time selected for the TIME setpoint
42. e Delay will prevent the compressor from starting until the delay time expires and is intended to prevent damage to the compressor motor from successive restarts During Recycle Delay the micro processor will alternatively flash RECYCLE DELAY and the remaining delay time in minutes Display for illustrative purposes only RWB Il PLUS MICROPROCESSOR CONTROL OPERATION Page 5 S70 200 OM DEC 99 NOTE Consult Motor Manufacturer for the recom mended duration of the Recycle Delay If the RUN key is pushed while CAUTION the unit is in Recycle Delay the compressor will start at the end of the delay period C C Capacity Control located at the bottom left of the display indicates the current capacity control suction pres sure setpoint in pounds per square inch gauge g or inches of mercury hg ADJUSTABLE SETPOINTS DISPLAY ADJUSTABLE SETPOINTS ID 33 10 01 87 Cap Control 20 0g Thu 15 33 36 Lo Suct Cutout 12 0 g Baud 2400 Lo Suct Alarm 16 0 g Hi Disch Cutout 225 g Aux1 Alarm NO Hi Disch Alarm 215 g Aux2 Shutd NC M L C Stop Load 095 CT Factor 078 M L C Force Unid 100 Recy Delay 30 The Adjustable Setpoints display lists the adjustable set points which define the limits of the compressor package operation When these limits are reached or exceeded an alarm or compressor shutdown will occur The information furnished by the Adjustable Setpoints display
43. e incoming data many times per second and compares the information it receives with the instructions programmed in the PROM chips information stored in the RAM chips and instructions it has received from the console keyboard As operating conditions change the microprocessor also forwards the information it is receiving to the display screen When an operating condition or conditions develop which the microprocessor program identifies as requiring a specific action the microprocessor generates an instruction which is forwarded to the output modules The instruction triggers a solid state output device capable of handling control voltage and the instruction is executed In some cases such as load and unload instructions the computer displays the instruction on the Operating display with an L load or U unload symbol at the same time as the appropriate output is energized If the microprocessor receives information that indicates an abnormal operating condition has been reached or is present it will generate one or more of the following instructions 1 If a subsystem on the compressor unit such as the oil heater s or liquid injection can correct the problem the microprocessor will energize or deenergize this system 2 If a prealarm setpoint has been reached the microprocessor will trigger the prealarm and display this information on the Operating display and the Annunciator display 3 If a cutout setpoint has been reached the mi
44. e lower case exception to All commands must be caps statement at beginning of section SS SSS Frick RWB Il PLUS MICROPROCESSOR CONTROL 570 200 OM DEC 99 OPERATION Page 19 CHANGE COMPRESSOR MODE COMMAND IDMCm1D Change mode to m O off A autocycle R remote Return message A followed by the 1D CR LF if successful CHANGE SLIDE VALVE MODE COMMAND IDMVm1D Change Slide Valve mode to m A auto R remote Return message A followed by the ID CR LF if successful CLEAR FAILURE COMMAND IDKFID Clear Fails Return message A followed by the 1D CR LF if successful CLEAR ANTIRECYCLE COMMAND IDKRID Clear Recycle Delay Return message A followed by the ID CR LF if successful RETURN AC IO COMMAND IDX Return Descrete AC IO Status Command Returns a 24 char data string followed by ID CR LF The 1st data element represents input 1 the last element represents output 16 1 energized or on O deenergized or off RETURN FAILURE COMMAND IDF Return Descrete Failure List Command Returns a 24 char data string followed by ID LF The 1st data element represents the 1st failure on page 1 of the annunciator the last element represents the last failure on annunciator page 4 1 failed O safe NOTE not all pages or annunciator failure el ements are defined TEMPERATURE PRESSURE CONTROL COMMUNICATIONS
45. en removed from the micropro cessor only the Operating Setpoints Annunciator and Shutdown displays will display information The freeze display will appear as a dark screen The Freeze display will only be present after a compressor unit cutout and power has not been interrupted to the microprocessor The cutout must be on a safety setpoint When power is lost to the micro it will not show the freeze display OPERATING DISPLAY OPERATING DISPLAY Thu 10 01 87 15 33 36 Suction Disch Oil Filter Compressor 20 09 180g 170 g O1PSID MAN Mode 015 140 135 RUNNING V Ratio S V Pos Pump FLA Sep 132 4 6 090 OFF 080 off Auto D Auto L FORCED UNLD ALARM C C 20 0 g LOW BATTERY Display for illustrative purposes only The Operating display is continuously updated and provides a variety of information in regard to the current status of the compressor s condition and performance The information furnished by the Operating display is as follows The DAY DATE and TIME are displayed at the top right of the display NOTE To set day date and time see TO CHANGE THE ADJUSTABLE SETPOINTS SUCTION Suction Pressure and Temperature are measured at the compressor inlet and are respectively displayed in pounds per square inch gauge g or inches of mercury hg and degrees Fahrenheit DISCH Discharge Pressure and Temperature are measured at the compressor outlet and are respectively displayed in pounds per
46. enabled the microprocessor keyboard is fully opera tive and the security lockout is not in effect When disabled the keyboard is rendered partially nonfunctional All displays will still be accessible through the keyboard If any attempt is made to enter new adjustable setpoints however the microprocessor will default to the Security display TO ENABLETHE KEYBOARD press the STEP key so that the brackets beside Enter Access Code flash key the proper five digit access code and press ENTER The Setpoints Access will toggle from disabled to enabled and adjustable set point entry is now possible TO DISABLE THE KEYBOARD press the F2 function key to call up the Security display Press the STEP key until the brackets beside Enter Access Code flash key the proper five digit access code and press ENTER Now press the STEP key until the brackets beside Setpoints Access flash and press the CHANGE key to toggle from enabled to disabled TO CHANGE THE ACCESS CODE press the F2 function key to call up the Security display Press the STEP key until the brackets beside Enter Access Code flash key the proper five digit access code and press ENTER Now select the Enter Access Code a second time by pressing the STEP key until the brackets beside Setpoints Access flash key in the new five digit access code and press ENTER NOTE Power loss will not effect the Security display NOTE IF NO ACCESS CODE WAS ENTERED AND THE D
47. est Oil Level 1 Remove wire 24 from terminal strip P3 and place a wire nut over it Push the RUN button If input 1 does not receive a signal within 5 minutes a cutout will occur Replace wire 24 Clear the cutout Allow the recycle delay to elapse and proceed to the next test NOTE The oil level cutout is not present on units with full lube pumps If you are unsure of the pump type on your unit contact Frick Service for confirmation WP ook Dirty Filter 1 Push the key and record the Oil Pressure value from the analog offset display Example 2 2 With the machine running and maintaining good pres sures and temperatures push the button to access the analog offset screen Step to the oil pressure value and max it out to 9 This must be done to avoid a sensor fault cutout 3 At the transducer manifold close the valve for transducer PE 1 and open the bleed valve for that transducer to at mosphere which will bring the pressure down to 0 psig 4 In about 15 seconds a dirty filter alarm will occur 5 Quickly close the bleed valve and open the valve to PE 1 to avoid an oil pressure alarm cutout 6 Clear the alarm 7 If cutout occurs ensure that the valves in their oper ating position and the plug has been put back into the vent 8 Return to the analog offset screen and reset the offset back to the original value 9 Allow for the recycle delay to elapse and restart
48. incorrect consult Frick TEST 1 Shut down the compressor and allow pressures to equalize Suction pressure discharge pressure and oil pressure should have the same reading TEST 2 If either oil pressure or discharge pressure read different pressures one or both transducers are at fault Valve off the suction transducer from the unit and open the vent valve on transducer manifold to atmosphere If the suction transducer reads atmospheric pressure then the high pressure transducer which agreed with the suction transducer in Test 1 is correct The transducer which disagreed is defective NOTE A 1 tolerance is allowed for all transducers Verify that the AUTO key has been pressed and AUTO appears under SV Pos on the Operating display If the problem persists see the Troubleshooting section SLIDE VALVE DOES NOT LOAD and or UNLOAD A loose or improper connection between the displays and the SBC is indicated Remove fuse 2FU 10 amp for 15 seconds and then restore to reset the displays SS SS Frick Testing Micro Panel Alarms Cutouts The following are testing proce CAUTION aures that may be used as a means of testing the standard safeties provided on the RWB II Frick Rotary Screw Compressor Unit with a RWB II Plus microprocessor They should only be completed by a competent individual with full understanding of safe operating procedures as they ap ply to industrial refrigeration If there are any questio
49. ired setpoint then press the CHANGE key to change the CC PB DB and CT values Enter the desire value for the remaining setpoints and press ENTER when complete ADJUSTABLE SETPOINTS FORM ADJUSTABLE SETPOINTS ID Cap Control T Lo Suct Cutout T Lo Suct Alarm Hi Disch Cutout Hi Disch Alarm M L C Stop Load M L C Force Unld Aux 1 Aux 2 CT Factor Recy Delay Photocopy and fill in applicable data for your unit Retain for reference if reentry is required SS SS Frick TEMPERATURE PRESSURE CONTROL PROGRAM OPTION continued The new setpoints provided on this display allow monitoring of compressor superheat and condensing in the separator The following setpoints apply to the monitoring of the super heat and condensing in the separator ALARM SHUTDOWN The Alarm shutdown setpoints select the conditions for an alarm or shutdown If alarm is selected the alarm will occur after a 30 second delay If shutdown is selected the shutdown will occur 60 seconds after the alarm OFFSET This setpoint is the degrees F above the satura tion point temperature where the alarm or shutdown will occur ACT The function selects whether the alarm shutdown is activated or not Use the STEP key to step to the desired setpoint then press the CHANGE key to change the setpoint Press ENTER when all desired setpoint changes have been made SETBACK DISPLAY
50. ke cec nece e ce e ce e ce e e e A x A x Low Motor Amps Sensor Fault When a prealarm or cutout occurs a flashing ALARM or CUTOUT indicator will appear in the lower right hand corner of the Operating display To determine the fault rotate to the Annunciator display by pressing the CHANGE key The Annunciator display lists all key operative points on four sequential displays These displays can be rotated from page 1 through page 4 by pressing the STEP key When a prealarm or cutout is triggered the pertinent point will flash and the time of the occurrence will be recorded to the right of the alarm Prealarms are self clearing At this time the alarm will stop flashing but the time of the first occurrence will still be recorded to the right of the alarm Pressing the CLEAR key while at the Annunciator display will clear all alarms and or cutouts In order to restore the Annunciator display and resume normal operation it will be necessary to go through the fol lowing steps 1 Correct the conditions causing the alarm 2 Press the ALARM SILENCE key This action may pre cede correcting the conditions causing the alarm 3 To clear or reset the Annunciator pages press the CLEAR key This will also clear the ALARM or CUTOUT indicator from the Operating display aS Frick 4 Press F1 to call up the Operating display If the condi tions causing the alarm have not been corrected or a new fault has occurred
51. llow operation at low differential pressures the micro will take the following steps A Force unload the compressor to 50 and display an F Unload when the oil pressure is within 10 Ib of the main oil injection port pressure and the slide valve position is greater than 50 B Prohibit the compressor from loading and display a Ld Inhib message when the differential is within 15 Ib of the main oil injection port pressure Oil Pressure Alarm and cutout Logic has been revised to same logic as currently used on RXB RXF The new logic is as follows Prelube and Cycling Oil Pump version when pump is not run ning Alarm will occur if oil pressure is 25 Ib below discharge pressure or within 10 Ib of suction pressure for 30 seconds Cutout occurs if oil pressure is 30 Ib below discharge pres sure or if oil pressure is within 7 lb of suction pressure for 10 seconds and alarm has already been set Full Lube and Cycling Oil Pump version when oil pump is run ning Alarm occurs if oil pressure is within 10 Ib of discharge pressure for 30 seconds Cutout occurs when oil pressure is within 5 Ib of discharge pressure for 10 seconds and oil pressure alarm has been set Cycling Oil Pump Control The oil pump will cut off when differential pressure between suction and discharge pressure is 55 Ib or greater Upon pump termination the above cutout logic pump not running is utilized Pump cut in occurs when the differential pressure between sucti
52. n through six display modes The CHANGE key is also used to change the status of various setpoints The STEP key steps or moves a set of flashing brackets through the variable setpoints on the Adjustable setpoints display the Auto cycle display the Security display and the Setback display The setpoint enclosed within the flashing brackets may be changed or updated The STEP key is also used when the annunciator display is selected to step through the annunciator s four information displays NOTE The key is used to step or move the flashing brackets described above backwards The ENTER key is used to enter new setpoint limits The CLEAR key will reset an alarm or cutout indication on the annunciator screen and will clear the microprocessor to allow continued operation or restarting if all conditions have returned to normal and no other control lockouts are in force The NUMERIC KEYPAD is used to introduce new setpoint limits The key is used to toggle between pounds per square inch gauge g and inches of mercury hg The RUN STOP and REMOTE START keys control the starting and stopping of the compressor unit The ALARM SILENCE key will de energize the alarm horn output The AUTO REMOTE and MANUAL keys control the operation of the compressor slide valve and moveable slide stop The F1 function key will return the operator to the main operating display This function may be in
53. not found when the LED for Output 6 is on check the fuse FU6 Output 7 controls the Hi Vi Liquid Injection Port solenoid If 120VAC is found across Wires 12 and 2 the Hi Vi Liquid Injection Port Solenoid should be energized If not the solenoid is defective If 120VAC is not found when the LED for output 7 is on check the fuse FU7 NOTE This output should only be on when the Vi is above 3 4 Output 8 controls the Economizer Solenoid Valve If 120VAC is found across Wires 11 and 2 the Economizer Solenoid should be energized If not the solenoid is defective If 120VAC is not found when the LED for Output 8 is on check the fuse FU8 NOTE The economizer output should only be on when the slide valve is at or above the 9076 position Output 9 controls the Alarm Horn The Alarm should turn on only when there is a prealarm If the Alarm does not sound when these conditions are found check for 120VAC across Wires 10 and 2 If 120VAC is not found check the fuse FU9 Inputs 2 through 4 can be used to operate the compressor from a remote location NOTE Check the Operating display to verify that the compressor and the slide valve are in the REMOTE MODE If 120VAC is found across Wires 21 and 2 22 and 2 and 23 and 2 and the input does not turn on consult Frick Company The current transducer is used to convert the AC motor amps to a DC voltage signal for the microprocessor If the FLA reading from the Operating display is
54. ns in regard to any one of these procedures do not attempt prior to consulting Frick at 717 762 2121 High Discharge Press Alarm Cutout 1 Once the machine is up and running and maintaining an even discharge pressure go to the adjustable setpoints display record the values for the Hi Disch Alarm and Cutout 2 Step down to the Hi Disch Alarm setpoint and enter a value of 10 psig lower than the current running Discharge Pressure 3 Then go back to the operating display to check for an alarm If no alarm exists ensure that the current discharge pressure is indeed above the new alarm value 4 If you do have an alarm go to Hi Disch Cutout and reset the value to 5 psig below the current running pressure 5 You should instantly receive the cutout If the cutout was not received ensure that the value is still lower than the running pressure 6 If a cutout was received return to the adjustable setpoints Screen and reenter the original alarm and cutout value Clear the alarm and cutout 7 Allow the recycle delay to elapse and proceed to the next test Low Suction Press Alarm Cutout 1 With the machine running and maintaining an even suction pressure go to the adjustable setpoints screen record the values for the Lo Suct Alarm and Cutout 2 Step to the Lo Suct Alarm and enter a value 3 psig or 3 in hg higher than the current running pressure 3 Return to the operating display and check for an alarm If no
55. oad until the motor full load amps FLA fall within 196 of the setpoint or lower NOTE Consult motor nameplate for recommended setpoint 570 200 DEC 99 ID The ID number is a programmable identification code used in telecommunications to access a specific compres sor DATE The Date displays the current date in the following format Month Day Year DAY Day will display the current day of the week TIME The Time displays the current time in the following format Hours Minutes Seconds The time is in 24 00 00 hour clock format BAUD Shows the baud rate of the RS422 communication ports 1 and 2 Both ports are configured as follows word 8 bit parity none or even stop 1 bit The communications ports are programmable from 300 to 19200 baud AUX 1 and AUX 2 May be configured for either an alarm or shutdown and with either a normally closed NC or normally open NO contact CT FACTOR The Current Transformer Factor records the proper current transformer factor to match the compressor motor FLA rating to the current transformer primary rating The CTF factor is programmable and its correct value is determined by the following formula 1024 x FLA Full Load Amps 10 x CT Current Transformer Primary Amps EXAMPLE FLA 230 Amps 300 300 5 1024 230 78 Round to whole number 10 x 300 RECY DELAY The Recycle Delay displays the current recycle delay setpoint
56. on and discharge is 45 Ib or less Oil pressure alarm and cutout logic pump running begins after a 30 second delay which allows the oil pump to build pressure Display for illustrative purposes only 70 200 OM DEC 99 Page 8 RWB Il PLUS MICROPROCESSOR CONTROL OPERATION ANNUNCIATOR DISPLAY ANNUNCIATOR PG 1 Use STEP key High Press Cutout High Press Alarm Low Press Cutout Low Press Alarm Oil Press Cutout Oil Press Alarm ANNUNCIATOR PG 2 Use STEP key Hi Oil Temp Cutout Hi Oil Temp Alarm Temp Cutout Temp Alarm Temp Cutout Temp Alarm Thu 10 01 87 15 33 36 to advance PAGE ck ck ok oko c ck ck ckockockockockckckok koc ck kk x x x x ko koc kockockockckock kkkxkxkkkkkkkkkkkkkkkkk kkkxkxkkxkxkkkkkkkkkkkkkk kkkkxkkxkxkxkkxkxkkxkkkkkkkk kkkxkxkxkxkxkkkxkxkkxkkkkkkxkk Thu 10 01 87 15 33 36 to advance PAGE kkkxkxkkxkxkkkkxkkkkkkkkkk kkkkxkxkxkxkkkkkkkkkkkkkk kkkkxkxkkxkkkkxkkxkkkkkkxkk kkkkxkxkxkkkkkkkkkkkkkkk kkkkxkkxkxkkkkkkkkkkkkkk kkkkxkxkkxkkkxkxkkxkkkkkkkk ANNUNCIATOR PG 3 Thu 10 01 87 15 33 36 Use STEP key to advance PAGE Comp Auxiliary kkkkxkxkxkxkkkxkxkkkkkkkkkk Pump Auxiliary kkkkxkkxkkkkkkkkkkkkkkk Oil Level kkkkxkkxkxkkkxkxkkxkkkkkkkk Comp Differential kkkkxkxkxkxkkkxkxkkxkkkkkkkk Dirty Filter kkkkxkkxkkkkkkkkkkkkkkk ANNUNCIATOR PG 4 Thu 10 01 87 15 33 36 Use STEP key to advance PAGE Aux 1 Alarm kkkkkxkxkkkkkxkxkkkkkkkkk Aux 2 Shutdown koc
57. on is what we do e Q NET supports open protocols for your SCADA system i e Allen Bradley DF1 and Modbus ASCII Q NET connects for local or remote access e Q NET can be applied to both new and existing systems Q NET means precise control 24 hours a day seven days a week Q NET distributed architecture means faster easier economical installations Q NET delivers increased operating efficiency and lowers energy costs Now available on Frick s AcuAir hygienic air handlers condensers screw compressors evaporators and refrigerant vessels too Take Control Form 570 200 1299 EE Supersedes 570 200 399 100 CV Avenue Box 997 Subject to change without notice Waynesboro PA USA 17268 0997 Printed in USA GUI 100 806 3 20 Phone 717 762 2121 FAX 717 762 8624 2006 Johnson Controls Inc ALL RIGHTS RESERVED A JOHNSON CONTROLS COMPANY www frickcold com
58. ow this information space has been pro vided to indicate whether SV Pos is in the automatic AUTO manual MAN or remote RMT mode The microprocessor will control this function in the automatic mode To the right of the mode indicator two other messages may appear L Indicates Slide Valve loading U Indicates Slide Valve unloading PUMP Pump displays the current status of the oil pump The display will read ON or OFF whenever the HAND OFF AUTO Switch is selected to AUTO and the compressor is running 96 FLA Percent Full Load Amps displays the percentage of the drive motor full load amperage rating that the motor is currently using SEP Separator displays the oil separator temperature in degrees Fahrenheit HTR Heater displays the condition of the oil separator heater s indicating ON or OFF ALARM CUTOUT An Alarm or Cutout message indicates an Alarm or Cutout setpoint has been reached or exceeded Rotate the display mode to the Annunciator display for de tails In the event of a cutout rotate to the Freeze display for further details FORCED UNLD A Forced Unload message indicates that the percentage of motor full load amps has exceeded the maximum limit and the microprocessor is unloading the compressor until the percentage FLA falls back to normal limits RECYCLE DELAY A Recycle Delay message indicates that the compressor has started and has shut down within the time delay set point period The Recycl
59. p the compressor The timer only accumulates time whenever the CC Temperature drops to or below the STOP setpoint and will reset if the CC Temperature rises above the STOP setpoint MINIMUM SLIDE VALVE Minimum Slide Valve Position shown as a percentage will limit the slide valve position to the displayed setpoint ACTIVE Indicates whether Auto Cycle is active or not Press the CHANGE key while at this setpoint to change the status Upon deactivation the compressor will return to the previous mode of operation LEAD LAG OPTION The lead lag compressor sequencing option provides the controls for operating two RWB II compressors in one system AUTO CYCLE DISPLAY AUTO CYCLE DISPLAY Suction Pressure Tue 04 10 90 08 44 57 Press 1 To Exit Comp Start 99 0 g 00 min Comp Stop 29 0 hg Timer 00 min Min SV 50 Active No Lead YES Display for illustrative purposes only The software includes user adjustable setpoints on the Auto Cycle setpoints screen F4 on Main Menu for the following START The suction pressure must be greater than or equal to the START setpoint in order to start the compressor This setpoint works in conjunction with the Timer setpoint located to the right of it on the Auto Cycle setpoints screen TIMER This is a time delay used to start the compressor The timer only accumulates time whenever the pressure rises to or above th
60. pear as FIXED SETPOINTS DISPLAY FIXED SETPOINTS COMM ACTIVITY HIGH STAGE PRELUBE OIL PUMP PGM A Hi Disch Cut 212F Hi Disch Alarm 194F Liq Inj Con 113F Hi Oil Temp Cut 167F Filter Hi Oil Temp Alarm 158F Oil Heater 113F Lo Oil Temp Cut 49F Lo Oil Cut 030 Lo Oil Temp Alarm 58F Lo Oil Alrm 025 If the microprocessor is receiving information in the com munications port from the other compressor a 2 will flash between the brackets During normal operation a 2 will flash every 5 seconds OPTIONAL WIRING FOR LEAD LAG SEQUENCING DE 9P DE 9P 4 GRN 4 5 BLK 5 8 8 9 9 3 3 USE BELDEN 8777 OR EQUAL 3 TWISTED PAIRS COLOR CODING SHOWN IS BELDEN 8777 RS 422 WIRING SHALL BE SEPARATE FROM ALL OTHER WIRING CONNECTORS DE 9P MALE WITH DBCH 9 HOOD 2 THUS JUMPER PIN 1 TO 6 AND2 TO 7 ON BOTH CONNECTORS WIRED AT FRICK IF BOTH UNITS ARE ON THE SAME SKID NOTE WHEN USING THE RS422 PORTS FOR LEAD LAG THEY CANNOT BE USED FOR ANY OTHER COMMUNICATIONS At the same time information is display on the lower right hand corner of the Auto Cycle display concerning the lead lag information AUTO CYCLE DISPLAY AUTO CYCLE DISPLAY Suction Pressure Tue 04 10 90 08 44 57 Press F1 To Exit Comp Start 99 0 g 00 min Comp Stop 29 0 hg Min SV 50 Active No Timer 00 min Lead
61. points Page 2 Fixed setpoints display Shutdown record display Freeze display Autocycle display Security display Setback display Analog offset display AN Annunciator display page N gt lt gt lt gt lt gt lt X gt lt X gt lt OK lt OD Display page 1 NOTE para Display page 2 meter uses to Display page 3 access annunci Display page 4 ator pages If the command was 01DA1 then the micro processor would dump the annunciator display page number one Display dumps consist of 336 characters each RETURN PRESSURES COMMAND 01PX Start command sequence Compressor ID code Return pressures command Return suction pressure PSIA Return discharge pressure g hg Return oil pressure g Return filter differential pressure Return all pressures If the command was 01PS then the micro processor would dump the suction pressure RETURNED ANSWER XXX 3 characters followed by a carriage return line feed If using the A command then the returned data would be XXXXXXXXXXXX 12 characters followed by a carriage return line feed RETURN FULL LOAD AMPS COMMAND Start command sequence 01 Compressor ID code A Return full load amps command If the command was 01A then the micro processor would dump the full load amps value RETURNED ANSWER XXX 3 characters followed by a carriage return line feed RWB Il PLUS MICROPR
62. r 25 OUTPUT FUSE 0 ALn SALA nAaR ESAE AnA 25 SBC WIRING 00 26 POINT TO POINT FIELD WIRING 02 26 MICRO COMPONENT PLACEMENT 2 27 RWB Il PLUS 0 27 MICROPANEL ASSEMBLY WIRING EEEE EEEa 28 EXE Frick RWB Il PLUS MICROPROCESSOR CONTROL OPERATION Page 3 570 200 OM DEC 99 MICROPROCESSOR CONTROL PANEL The following must be read in addi AWARNING tion to the Operation and Start up in structions 570 200 IOM before at tempting to start or operate the unit The RWB II PLUS compressor is controlled by a state of the art microprocessor control system The microprocessor continuously monitors the compressor unit s condition and operation The microprocessor also directs instructions to the various compressor unit subsystems The microprocessor has a membrane switch keyboard Pressing the keyboard in the area outlined as a key
63. r square inch gauge g or inches of mercury hg COMP START The suction pressure must be greater than or equal to the START setpoint in order to start the com pressor This setpoint works in conjunction with the TIMER setpoint located to the right of it on the display TIMER This is a time delay used to start the compressor The timer only accumulates time whenever the pressure rises to or above the START setpoint and will reset if the pressure drops below the START setpoint COMP STOP Compressor Stop will shut down the unit if the suction pressure drops to or below the displayed STOP setpoint limit This setpoint works in conjunction with the setpoint located to the right of it on the display NOTE This limit must be set higher than Low Suction Pressure Cutout and the Low Suction Pressure Alarm setpoints STOP TIMER The stop TIMER is a time delay used to stop the compressor The timer only accumulates time whenever the pressure drops to or below the STOP set point and will reset if the pressure rises above the STOP setpoint MINIMUM SLIDE VALVE Minimum Slide Valve Position shown as a percentage will limit the slide valve position to the displayed setpoint ACTIVE Indicates whether Auto Cycle is active or not Press the CHANGE key while at this setpoint to change the status Upon deactivation the compressor will return to the previous mode of operation
64. remote start key on the front panel of the microprocessor The remote load and unload inputs can only be recognized when the remote key in the slide valve column on the front panel of the microprocessor has been pressed B If master sequencing between multiple compressors in parallel on a common suction is desired This output data will permit the compressor microprocessor to be interfaced with a master sequence controller See electrical diagram for details SUGGESTED PROGRAMMABLE CONTROLLER PROGRAM TO DECODE MICROPROCESSOR OUTPUT DATA CODES 0 Compressor Off 1 Running 10 Slide Valve Position 2 Running 20 Slide Valve Position 3 Running 30 Slide Valve Position 4 Running 40 Slide Valve Position 5 Running 50 Slide Valve Position 6 Running 60 Slide Valve Position 7 Running 70 Slide Valve Position 8 Running 80 Slide Valve Position 8 Running 90 Slide Valve Position Running 100 Slide Valve Position Running with MLC inhibit Lockout on Recycle Delay D Cutout B Undefined Undefined MICODC RWB Il PLUS MICROPROCESSOR CONTROL 570 200 OM DEC 99 Frick OPERATION Page 15 C A master sequence controller must be installed to pro OUTPUT NO vide the signals to remote start and stop the compressors TERMINAL NO and remote load and unload the compressors ba
65. rick MICROPANEL ASSEMBLY WIRING DIAGRAM CUSTOMER SUPPLIED 115 OR 230 VAC CONTROL TRANSFORMER POWER SOURCE IS REQUIRED ALL POWER SOURCES SHALL BE GROUNDED ON ONE SIDE ISOLATED AND SEPARATED FROM OTHER INDUCTIVE LOADS SUCH AS LIGHTING CIRCUITS EARTH BUSBAR NEUTRAL POWER SOURCE OR FROM FRICK SUPPLIED OR SPECIFIED STARTER USE MINIMUM 12 AWG FOR FEED IF SEPARATE FEED OR VOLTAGE FOR HEATER CIRCUIT IS DESIRED H REMOVE JUMPERS 1 TO 1A 8 2 TO 2 8 CONNECT A SEPARATE 115 OR 230 VAC SOURCE TO 1A amp 2A FOR 1 KW 115 V HTR S MOVE 1FU WIRE TO 1A FU amp NUMBER 25Aicn NEUTRAL 4 42 1A 15 e 55 ADD 1A FU FOR 115V 1KW HTR S 1 15 25A BEU ADD 1B FU FOR 3rd HTR 15 25B EMERGENCY STOP OIL PUMP OFF HAND AUTO To SBC TERMINALS x00 39 s 2A B 1 5009 TO LN 30 OIL PUMP AUX REMOTE UNLOAD 2 SEE NOTE C REMOTE LOAD REMOTE START RUN STOP 1LSL x OS gare 924 ALL NEUTRALS ENTERING THIS ENCLOSURE SHALL BE TIED TOGETHER AT SOURCE NOT IN THIS ENCLOSURE TIE NEUTRAL TO GROUND AT SOURCE _ GROUND BAR IN MICRO SEPARATOR OIL HEATERS 5 KW HTR S 1 KW HTR S OPTIONAL 3rd HEATER W
66. sed on MNEMONIC Bi BiT ZU Bones the common suction pressure or other parameter and the compressor status based on the optional microprocessor ouTeuT 2 ODE output data feedback The customer may supply his own master sequencer panel usually a programmable control Compressor Off Eee e fo of of 7 ler or Frick can supply this sequencer if desired contact 1 1 Frick for pricing 0 0 1 0 2 0 0 1 1 3 RUN COMPRESSOR Running 0 1 0 0 4 LOAD COMPRESSOR Slide 0 1 0 1 5 c E UNLOAD COMPRESSOR Valve Posi 1 6 9 sm 18 6 tion 1 1 1 7 392 1 0 8 doo 1 1 9 Quz EZB 1 1 0 A asm Zi DL Running with MLC Inhibit EBESERER B 552 mem Lockout on Recycle Delay 1 C Ser 298 Cutout 1101 D 38 Undefined x s 59 BRE ne i BIT 1 BIT 3 3 252 o gt lt ak 1 MASSEQI LLa MICROPROCESSOR OUTPUT DATA CODE A 3 5 K OHM 10 watt resistor RES must be field installed as shown below when the 120 VAC outputs of the RWB II PLUS are driving 120 VAC solid state input devices such as programmable controllers NEUTRAL PROGRAMMABLE CONTROL OUTPUT IOK 947 NES 7 9 DATA CODE 3 4 0 OUTPUT MD PROGRAMMABLE CONTROL 13 DATA CODE BIT 2 2 OUTPUT m
67. setpoint is used to select either Pressure Capacity Control or Temperature Capacity Control NOTE There are only two setpoints press for pressure capacity control and temp for temperature capacity control CC The capacity control setpoint is for normal operation not setback CUTOUT This setpoint will stop the compressor if the suction pressure drops below the pressure setpoint for 90 seconds or ifthe CC Temperature drops below the temperature setpoint There is no time delay on the temperature cutout ALARM An alarm will be activated if the suction pressure drops below the pressure setpoint or if the CC Temperature drops below the temperature setpoint There is no time delay for either PB The Proportional Band PB is used to determine the amount of time the load unload solenoid is energized ac cording to how far away from the setpoint the actual control pressure or temperature is The smaller the number the more load unload will be sent A PB of 10 is default It is adjustable to 2 5 10 15 20 or 25 percent DB The Dead Band DB is a plus or minus value above or below the setpoint which the compressor will neither load nor unload It is adjustable between 5 and 5 0 psig or degrees in increments of 5 units CT The Cycle Time CT setpoint is the amount of time between the beginning of each load unload response It is adjustable to 5 10 15 20 25 or 30 seconds Use the STEP key to step to the des
68. square inch gauge g and degrees Fahrenheit OIL Oil Pressure and Temperature are measured prior to entering the compressor and are respectively displayed in pounds per square inch gauge g and degrees Fahrenheit FILTER Pressure drop across the oil filter On the model 676 only the bearing oil filter pressure drop is displayed The main oil injection feed filter pressure drop is shown on a unit mounted gauge SS SS Frick COMPRESSOR Compressor displays the status of the compressor unit The mode of operation will be indicated as either manual MAN MODE when the RUN key has been pressed automatic AUTO MODE when Auto Cycle has been activated remote RMT MODE when the REMOTE key has been pressed or off OFF MODE V RATIO Volume Ratio is the ratio selected by the micropro cessor to provide the highest efficiency at any given suction and discharge pressure condition Immediately below this an information space has been provided to indicate whether V ratio is in the automatic AUTO or the manual MAN mode The microprocessor will control this function only in the automatic mode To the right of the mode indicator two other messages may appear l Indicates V Ratio increase D Indicates V Ratio decrease SV POS Slide valve position is displayed as a percentage This percentage reflects the mechanical position of the slide valve and does not reflect the percentage of full load opera tion Immediately bel
69. ss Wires 15 and 2 when the LED for Output 4 is on check the fuse FU4 Output 5 controls the Slide Stop Decrease Solenoid If 120VAC is found across Wires 14 and 2 the Slide Stop Decrease Solenoid should be energized If not the solenoid is defective If 120VAC is not found across Wires 14 and 2 when the LED for Output 5 is on check the fuse FU5 570 200 OM DEC 99 Page 22 Frick RWB Il PLUS MICROPROCESSOR CONTROL MAINTENANCE TROUBLESHOOTING FRICK SBC MICROPROCESSOR SYSTEM Continued LIQUID INJECTION SOLENOID DOES NOT ENERGIZE LIQUID INJECTION REFRIGERANT CUTOUT LICO HI VI LIQUID INJECTION PORT OPTIONAL SOLENOID DOES NOT ENERGIZE ECONOMIZER OPTIONAL SOLENOID DOES NOT ENERGIZE ALARM HORN DOES NOT ENERGIZE CONTROL PANEL DOES NOT RESPOND TO REMOTE CONTROL SIGNALS MOTOR LOAD CONTROL FORCED UNLOAD OCCURS AT LOW MOTOR AMPS PRESSURES ON THE OPERATING DISPLAY DO NOT APPEAR CORRECT COMPRESSOR DOES NOT AUTO MATICALLY LOAD OR UNLOAD DISPLAY SCREENS DISPLAY SCRAMBLED PATTERN OR LISTS ALPHABET Verify that the Liquid Injection TXV is modulating properly and not feeding excessive liquid to the compressor When oil temperature drops too low the microprocessor SHOULD de energize this solenoid Output 6 controls the Liquid Injection Solenoid If 120VAC is found across Wires 13 and 2 the Liquid Injection Solenoid should be energized If not the solenoid is defective If 120VAC is
70. start AT 113 F The microprocessor instructs the liquid injection solenoid output to deenergize the liquid injection solenoid AT 122 F The microprocessor instructs the liquid injection solenoid output to energize AT 110 150 F Normal operating range The microprocessor continues monitoring oil temperature and reporting this information on the Operating display AT 158 F The microprocessor triggers the High Oil Temperature Alarm and displays the alarm on the Operating display and the Annunciator display AT 167 F The microprocessor instructs the compressor motor to shut down and displays a CUTOUT indication on the Operating display It stores the operating conditions at the moment of cutout in the Freeze display Information regarding the cutout will also be retained by the Annunciator and the Shutdown Record displays NOTE If the operator makes an error by attempting to start the compressor under conditions outside safe normal operating conditions the microprocessor will prevent start up and advise the operator of the fault RWB PLUS MICROPROCESSOR CONTROL Page 14 OPERATION aS Frick MULTIPLE COMPRESSOR SEQUENCING FOR RWB Il COMPRESSOR UNITS WITH MICROPROCESSOR CONTROLS A The standard microprocessor panel includes 1 Remote Run Input 2 Remote Load Input 3 Remote Unload Input The remote run input is only recognized when the remote run mode has been selected by pressing the
71. stop the compressor if a temperature or pressure sensor is at its minimum or maximum limit for 5 seconds The following channels and conditions will cause this cutout Channel 1 Suction Temp Low or High 67 to 113 F Channel 2 Low or High Discharge Temp 32 or 212 F Channel 3 Low or High Oil Temp 0 or 180 F Channel 4 Low or High Separator Temp 0 or 180 F Channel 6 Low or High Oil Pressure lt 0 g or 285 g Channel 8 Low or High Discharge Pressure lt 0 g or 285 g Channel 9 Low Suction Pressure 29 hg only Pulse Load Signal at 100 Slide Valve Position This new feature will stop loading the compressor when 100 slide valve is displayed The load signal will pulse for 2 sec onds every minute when the slide valve is at 100 and the pressure is above setpoint TEMPERATURE PRESSURE CONTROL PROGRAM OPTION NOTE The following displays are provided only when the Temperature Pressure Conirol Program option has been ordered with the RWB II Plus Rotary Screw Com pressor Unit SETPOINTS DISPLAY PAGE 1 SETPOINTS PAGE 1 Capacity Control Press CUTOUT ALARM DB CT Press 25 3g 01 34 05 30 10 1 0 10 Temp 40 0F 32 0F 33 0F 10 0 5 10 offset act Sup Heat Alarm 10F no Sep Cond Alarm 10F no Display for illustrative purposes only The Setpoints Display is accessed by pressing the CHANGE key RWB Il PLUS MICROPROCESSOR CONTROL Page 10 OPERATION Frick CONTROL This
72. the display screens 2 DO NOT HANDLE the SBC or the display screen boards when their cables are disconnected without first attaching a ground strap to prevent static electrical discharge from your body RWB Il PLUS MICROPROCESSOR CONTROL Page 20 MAINTENANCE Frick Most problems encountered with the microprocessor and control circuits will be the result of a wiring fault blown fuse or failure of a peripheral control such as a solenoid coil or a pressure transducer Faults in the computer while pos sible are unlikely If a fault develops in the computer the probability is that all functions will cease and the display screens will go blank The control system of the RWB II PLUS compressor consists of a 120 volt AC high voltage side and a 0 15 volt DC low voltage side The 120 volt side actuates solenoids relays alarms and other electromechanical functions The 0 15 volt DC side operates the computer and its various sensors The microprocessor console contains the SBC single board computer and two display screens When working within the micropro AWARNING cessor console 120 VOLTS CAN CAUSE INJURY OR DEATH To troubleshoot the low voltage side of the RWB II PLUS control circuits it is necessary to have the following tools Accurate digital multimeter Small wire stripper Small screwdriver Small snip nose pliers 15 watt soldering iron no larger 032 60 40 rosin core
73. the ma chine SS SS Frick EPROM MEMORY I C CHIP REPLACEMENT Microprocessor EPROM memory I C chips are located inside the microprocessor console on the SBC board A special tool is required to remove these chips to lessen the chance of damaging them See Troubleshooting The Microproces Sor The procedure to replace EPROM memory chips is outlined below 1 Shut off control power 2 Remove the microprocessor console cover 3 Using a chip extraction tool remove the old EPROM chips from the SBC board Pay particular attention to the orienta tion of the notch on the end of the chip then install new chip with the notch in the same position NOTE The chip labeled 4 must be inserted into socket U4 and the chip labeled 5 must be inserted into socket U5 SBC BOARD REPLACEMENT The procedure to replace SBC boards is outlined below 1 Shut off control power 2 Remove the old board from the machine and the new board from its packing and place both on an antistatic surface 3 Remove the program chip s from the defective board and install them in the replacement board Pay particular attention to the ori A CAUTION entation ofthe notch es on the end of the chip s Install the chip s on the replacement board in exactly the same position as they were on the defective board 4 IMPORTANT Before installing the new board determine if there are gray yellow wires from P15 see the SBC wiring diagram for location
74. the next test Hi Oil Temp Alarm Cutout 1 Record the values for Hi Oil Temp Alarm and Cutout stated on the fixed setpoints display 2 Carefully remove temperature probe TE 3 located down stream from the oil filter 3 Slowly apply heat to the probe with a forced air device such as a heat gun or blower dryer 4 Once the temperature rises to the alarm value stated on the fixed setpoints display an alarm should be received with no delay 5 Allow the temperature to continue rising until the cutout temperature is met and the cutout is received with no delay Allow probe to cool then reinstall in the well 6 Allow the recycle delay to elapse and proceed with the next test Lo Oil Temp Alarm Cutout 1 Record the values for Lo Oil Temp Alarm and Cutout from the fixed setpoints display 2 Carefully remove TE 4 from the belly of the separator and immerse the probe into a crushed ice water bath 3 Once the temperature drops to the alarm value the alarm will be received without delay Allow the temperature to continue falling until the cutout value is met and occurs without delay Reinstall TE 4 4 Clear the alarm and cutout Allow the recycle delay to elapse and proceed to the next test H 1 Record the Hi Disch Temp Alarm and Cutout values from the fixed setpoints display 2 With the machine running remove the discharge tempera ture probe TE 2 located on the discharge pipe between the compressor and the separator
75. utout should be set at 90 of the setting of the lowest high side relief valve The High Discharge Pressure Alarm should be set 10 PSIG lower than the Cutout The Capacity Control setpoint should be the equivalent of the normal suction condition FIXED SETPOINTS DISPLAY FIXED SETPOINTS HIGH STAGE PRELUBE OIL PUMP PGM A Hi Disch Cut 212F Hi Disch Alarm 194F Liq Inj Con 113F Hi 011 Temp Cut 167F Filter Hi Oil Temp Alarm 158F Oil Heater 113F Lo Oil Temp Cut 49F Lo Oil Cut 030 Lo Oil Temp Alarm 58F Lo Oil Alrm 025 The Fixed Setpoints display lists all fixed setpoints program version plus low oil alarm and low oil cutout setpoints Fixed Setpoints define the limits of acceptable compressor operation Fixed Setpoints are factory determined stored in programmed memory PROM and will remain in memory if power to the microprocessor is interrupted HI DISCH CUT The High Discharge Temperature Cutout reported in degrees Fahrenheit will shut down the com pressor if the discharge temperature equals or exceeds this setpoint HI DISCH ALARM The High Discharge Temperature Alarm reported in degrees Fahrenheit will trigger a prealarm if the discharge temperature equals or exceeds this setpoint HI OIL TEMP CUT The High Oil Temperature Cutout re ported in degrees Fahrenheit will shut down the compressor if the oil temperature equals or exceeds this setpoint HI OIL TEMP ALARM The High Oil Temperature Alarm
76. voked at any time even during setpoint entry The F2 function key will call up the Security display NOTE Press the F2 key as prompted by the display to return to the previously selected display The F3 function key will call up the Setback display NOTE To exit the Setback display press the F1 key as prompted by the display The F4 function key will call up the Auto Cycle display NOTE To exit the Auto Cycle display press the F1 key as prompted by the display The DISPLAY BACKLIGHT key will toggle the dual LCD display backlights on and off A preset delay will shut off the backlight after ten minutes elapsed time The microprocessor has two liquid crystal displays in an 8 line by 40 character format for a total of 320 characters There are 9 different display modes When power is first applied to the RWB Il PLUS MICROPROCESSOR CONTROL Page 4 OPERATION aS Frick control panel the unit will be in the Operating display mode To change to a different display mode press the CHANGE key The display modes in their order of rotation are Operating display Adjustable Setpoints display Adjustable Setpoints display 2 Fixed Setpoints display Annunciator display 4 pages Shutdown Record display Freeze display F1 Operating display F2 Security display F3 Setback display F4 Auto Cycle display NOTE On initial powering of the microprocessor and any time power has be
77. will cause that function to be recognized by the microprocessor The keyboard has 32 membrane type keys In addition to the keyboard there is an emergency stop but ton Pushing the emergency stop will bypass the computer and remove all power from the outputs SLIDE STOP SLIDE VALVE COMPRESSOR FUNCTION AUTO AUTO RUN F1 MANUAL REMOTE sroP INCREASE F2 MANUAL MANUAL REMOTE DECREASE LOAD START MANUAL ALARM FA UNLOAD SILENCE SETPOINT ENTRY ENTER CLEAR b Eu epu Frick page d This will shut down the compressor motor and all high voltage to the compressor auxiliary systems such as the oil pump and liquid injection solenoid THE EMERGENCY STOP BUTTON IS FOR EMERGENCY SHUTDOWN SITUATIONS ONLY and MUST NOT BE USED TO ROUTINELY SHUT OFF THE COMPRESSOR The microprocessor continuously monitors the state of the battery which maintains setpoints and various other data If the battery voltage is low the message LOW BATTERY will flash in the lower right hand corner of the bottom display see 570 200 IOM for description of battery backup The microprocessor hardware contains an output watchdog circuit If the microprocessor should fail this circuit will disable turn off all outputs 570 200 DEC 99 KEYS AND KEY FUNCTIONS NOTE The microprocessor will automatically return to the main operating display after 60 seconds of keyboard nonactivity The CHANGE key rotates the dual display scree

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