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RSMVQ2R Technical Guide

TROUBLESHOOTING

Head Pressure Transducer

Table 7: Head Pressure Transducer Chart

If you suspect there is a problem related to the head pressure

transducer, measurements can be taken at the HP terminal.

See

Table 7, this page

Head Pressure Transducer Chart

Voltage

Pressure

Voltage

Pressure

0.5

2.6

350

0.6

2.7

367

0.7

2.8

384

0.8

2.9

400

0.9

3.0

417

1.0

3.1

434

1.1

100

3.2

450

1.2

117

3.3

467

1.3

133

3.4

484

1.4

150

3.5

500

1.5

167

3.6

517

1.6

183

3.7

534

1.7

200

3.8

550

1.8

217

3.9

567

1.9

233

4.0

584

2.0

250

4.1

600

2.1

267

4.2

617

2.2

283

4.3

634

2.3

300

4.4

650

2.4

317

4.5

667

2.5

334

Содержание RSMVQ2R

Страница 1: ...RSMVQ2R Technical Guide ...

Страница 2: ...peland Corporation Sidney OH Danfoss VFD is a registered trademark of Danfoss Commercial Compressors S A Tallahassee FL RSMVQ2R REVISION LOG REVISION DATE CHANGE Rev A March 28 2021 Original www aaon com RSMVQ2R PARTS REFERENCE PART DESCRIPTION PART NUMBER RSMVQ2R ASM02652 VCCX2 Controller ASM01698 Prism 2 ASM02533 IP Module Kit ASM01902 CommLink 5 ASM01874 EBC E BUS Cable Assembly E BUS Power Com...

Страница 3: ... and Head Pressure Control 14 LCD SCREENS 15 LCD Display Screen and Navigation Keys 15 Main Screens Map 16 Module Screens 17 System Status Screens 18 Sensor Status Screens 19 Alarms Screens 20 Alarm History Screens 21 Setpoint Status Screens 22 Copeland Packaged VFD Screens 23 Danfoss VFD Screens 24 Copeland VFD Screens 26 Copeland VFD Screens and DMQ EXV Screens 27 TROUBLESHOOTING 28 LED Diagnost...

Страница 4: ... 1 RSMVQ2R Dimensions 6 Figure 2 RSMVQ2R Inputs Wiring 8 Figure 3 RSMVQ2R Outputs Wiring 9 Figure 4 Danfoss VZH028 VZH035 VZH044 Envelope 13 Figure 5 Danfoss VZH052 and VZH065 Envelope 13 Figure 6 Copeland ZPV0662E Envelope 13 Figure 7 Copeland ZPV0962E Envelope 13 Figure 8 LCD Display and Navigation Keys 15 Figure 9 RSMVQ2R LED Locations 28 Figure 10 Prims 2 Single Condenser Module A Configuratio...

Страница 5: ...VQ2R can be connected There are two E BUS Expansion Ports which allow the use of communicating sensors and the E BUS Modules The RSMVQ2R is configured using Prism 2 software The RSMVQ2R provides four analog inputs two binary inputs four relays and two analog outputs See Figures 2 3 pages 8 9 for wiring The RSMVQ2R provides the following Modulates the Compressors or controls staging to satisfy the ...

Страница 6: ... COND FAN 1 COND FAN 2 GND 24 VAC POWER ONLY WARNING POLARITY MUST BE OBSERVED OR THE CONTROLLER WILL BE DAMAGED CONDENSER 2 5 V DISCHARGE TEMP 1 COMP STAT 1 H 1 P SATURATION TEMP 2 COMP STAT 2 GND NOT USED GND NOT USED GND BINARY INPUTS MODBUS RSMVQ2R www aaon com HEAD PRESSURE SENSORS DUAL E BUS EXP VALVE 1 5 V H 2 P GND NOT USED NOT USED GND NOT USED EXP VALVE 2 R T SH SHD T R SHD T R EXP VALVE...

Страница 7: ...ensors should be 24 gauge Some sensors require two conductor wire and some require three or four conductor wire 5 Minimum wire size for 24 VAC thermostat wiring should be 22 gauge 6 Be sure that all wiring connections are properly inserted and tightened into the terminal blocks Do not allow wire strands to stick out and touch adjoining terminals which could potentially cause a short circuit 7 When...

Страница 8: ...oller are always powered together Loss of power to the expansion module will cause the controller to become inoperative until power is restored to the expansion module Figure 2 RSMVQ2R Inputs Wiring 18 30 VAC GND Line Voltage Size transformer for correct total load RSMVQ2R 18 VA HP GND V BK RD WH COMP STAT 1 COMP STAT 2 BIN1 BIN2 GND COM Condenser Fan 2 AOUT1 AOUT2 COM Condenser Fan 1 TEMP 1 TEMP ...

Страница 9: ... 1 2 3 7 8 4 5 6 1 2 3 7 8 R to Term 68 RED GRN BLK RED GRN BLK ALARM UP DOWN ENTER MENU AAON P N ASM02652 24 VAC GND RELAY CONTACT RATING IS 1 AMP MAX 24 VAC CONDENSER 1 COMP 2 ENABLE COMP 2 HI SPEED ANALOG OUTPUTS COMMON RELAY OUTPUTS LABEL P N G068350 COND FAN 1 COND FAN 2 GND 24 VAC POWER ONLY WARNING POLARITY MUST BE OBSERVED OR THE CONTROLLER WILL BE DAMAGED CONDENSER 2 5 V DISCHARGE TEMP 1 ...

Страница 10: ...perature 2 TEMP2 5 6 Not Used TEMP3 TEMP4 Binary Inputs 1 Compressor Status 1 BIN1 2 Compressor Status 2 BIN2 3 Not Used BIN3 4 Not Used BIN4 Analog Outputs 0 10 VDC 1 Condenser Fan 1 AOUT1 2 Condenser Fan 2 AOUT2 DMQ EXV COMM Ports 1 Expansion Valve 1 EXV 1 2 Expansion Valve 2 EXV 2 3 Not Used EXV 3 4 Not Used EXV 4 Binary Outputs 24 VAC 1 Compressor 2 Enable Relay RLY1 2 Compressor 2 High Speed ...

Страница 11: ...d circuit BIN1 Compressor Status 1 When this wet contact input closes a 24 volt signal to Binary Input 1 indicates that Compressor 1 is running Typically the source for this is a relay output from theVCCX2 If Binary Input 1 opens a Compressor alarm will be generated Compressor 1 relay needs to be configured on the VCCX2 as A1 Compressor Run Status BIN2 Compressor Status 2 When this wet contact inp...

Страница 12: ...Compressor 2 will be turned off and Compressor 1 will be reset to 67 of its range min to max 3 If the supply air temperature is below the setpoint plus window and Compressor 1 VFD is at minimum capacity Compressor 1 will be turned off 4 If the supply air temperature rises above the setpoint and Compressor 1 VFD s minimum off time has been met Compressor 1 will be turned back on Dehumidification Op...

Страница 13: ... set to 67 at any stage event Therefore whenever a staging event occurs the VFD compressor position will be reset to the middle point of the modulation range This allows the compressor enough modulation time before making another staging event to try to avoid cycling between staging events Figure 4 Danfoss VZH028 VZH035 VZH044 Envelope Figure 5 Danfoss VZH052 and VZH065 Envelope Figure 6 Copeland ...

Страница 14: ...gnal When the condenser signal first activates it maintains at 100 for 10 seconds In the Cooling Mode the condenser signal will modulate to maintain the cooling head pressure setpoint The signal can modulate between 15 and 100 If the head pressure exceeds 550 PSIG the condenser control signal will immediately go to 100 and a high head pressure alarm will be generated The alarm will be deactivated ...

Страница 15: ...D Display and Navigation Keys Table 4 Navigation Key Functions Table 5 Editing Key Functions Editing Key Key Function UP or DOWN Use the UP or DOWN key to enter editing mode on a user adjustable screen Edit Mode is indicated by the underscore appearing on the screen NOTE Entering Edit Mode will also adjust the value up one UP key or down one DOWN key so you may have to readjust the value ENTER Use...

Страница 16: ...ENSOR STATUS Press to scroll through SENSOR STATUS screens Press to go to ALARMS screens ALARMS Press to scroll through ALARMS screens Press to go to ALARM HISTORY screens ALARM HISTORY Press to scroll through ALARM HISTORY screens Press to go to SETPOINT STATUS screens SETPOINT STATUS Press to scroll through SETPOINT STATUS screens Press to go to VFD MENU Screens Note There are three separate VFD...

Страница 17: ...E COOL ONLY CURRENT SYSTEM TYPE COOL ONLY or HEAT PUMP OF COMP 1 or 2 OF COMPRESSORS RSMVQ2R Module Screens Refer to the following map when navigating through the RSMVQ2R Screens From the RSMVQ2R MODULE Screen press ENTER to scroll through the screens OF EXVs ISO OF EXPANSION MODULES COMP A1 FIXED OR MOD COMPRESSOR 1 TYPE COMP A2 FIXED TWO STEP COMPRESSOR 2 TYPE OF COND 1 or 2 OF CONDENSERS TONNAG...

Страница 18: ...OFF or MODULATING COMPRESSOR 1 ON OFF or MODULATING FIXED ON OFF Compressor is on or off MODULATING 0 100 COMP A2 ON OFF or HI SPEED LO SPEED COMPRESSOR 2 ON OFF HI SPEED or LO SPEED FIXED ON OFF Compressor is on or off TWO STEP High Speed or Low Speed CONDFAN1 OFF CONDENSER 1 COND FAN NOT USED or OFF COND FAN MODULATING PERCENTAGE 0 100 CONDFAN2 OFF CONDENSER 2 COND FAN NOT USED or OFF COND FAN M...

Страница 19: ...D PRESSURE 1 READING FROM INPUT HEAD PR2 XXX PSI HEAD PRESSURE 2 READING FROM INPUT SUPRHT 1 XX DEG CURRENT SUPERHEAT 1 CALCULATION SUPRHT 2 XX DEG CURRENT SUPERHEAT 2 CALCULATION DISCTEMP XX DEG DISCHARGE LINE TEMP 1 READING FROM INPUT Only appears if configured for DANFOSS COIL 1 XX DEG COIL TEMPERATURE 1 COIL 2 XX DEG COIL TEMPERATURE 2 CALC CT XX DEG CALCULATED COIL TEMPERATURE Saturated Tempe...

Страница 20: ...ECTED This alarm will be activated when the Superheat is less than 4ºF for two minutes during normal operation or four minutes during the first 10 minutes The system will shut down and will retry after five minutes LOW SUPERHEAT 2 SH2 DETECTED This alarm will be activated when the Superheat is less than 4ºF for two minutes during normal operation or four minutes during the first 10 minutes The sys...

Страница 21: ...reen section The Alarm will appear on the first line and the second line will display how long ago each alarm last occurred As a result the alarms listed on the ALARMS screen will be abbreviated as follows in order of the way they are listed in the priorALARMS screen section CL TEMP 1 Coil Temp 1 Failure CL TEMP 2 Coil Temp 2 Failure COMP 1 FL Compressor 1 Not Running COMP 2 FL Compressor 2 Not Ru...

Страница 22: ...PSI HEAD PRESSURE SETPOINT 2 Valid range is 260 475 PSI Default is 340 PSI SPRHT SP 15 SUPERHEAT SETPOINT SETTING Valid range is 1 30 degrees Default is 15 degrees LOW SUCT 95 PSI LOW SUCTION PRESSURE SETPOINT SETTING Default is 95 PSI COILT SP 40 COIL TEMPERATURE SETPOINT SETTING Valid range is 35 70 degrees Default is 40 degrees GLYCOL 40 GLYCOL PERCENTAGE SETPOINT SETTING Valid range is 35 70 D...

Страница 23: ...ts up if it is missing communication packet information MB VALID MB VALID Counts up if it receives good communication packet information VFD COMP VFD COMPRESSOR Enabled or Disabled SPD CMND SPEED COMMAND Commanded speed in RPM SPEED FB SPEED FEEDBACK Speed feedback read from the VFD in RPM MAX RPM MAXIMUM RPM Maximum speed programmed into the VFD in RPM NO ALARMS or ALARM CODE ALARM CODE Alarm cod...

Страница 24: ...OR Displays a value read from VFD showing status and configuration information Then it will display each bit of information separately COMMAND COMPRESSOR COMMAND Compressor percentage commanded to VFD MAX REF MAXIMUM SPEED Maximum speed programmed into the VFD in RPM MIN REF MINIMUM SPEED NOT 0 or CONFIRMED Minimum speed programmed into the VFD For proper speed command this should always say confi...

Страница 25: ...25 RSMVQ2R Technical Guide LCD SCREENS Danfoss VFD Screens MODEL MODEL NUMBER Compressor model number read from VFD DRIVE DRIVE NUMBER Type of Danfoss VFD CDS803 or CDS303 ...

Страница 26: ...essor speed read from VFD in RPM When in Force Mode speed can be adjusted from this screen by using the UP and DOWN arrow keys REG 78 thru 85 0 COPELAND VFD FAULT CODES 78 THROUGH 85 Used for troubleshooting faults See Copeland manual for descriptions TO CLEAR FAULT UP CLEAR FAULT To clear faults at the VFD press the UP button Faults will auto matically clear after five minutes on their own MODEL ...

Страница 27: ...XV Screens Refer to the following map when navigating through the DMQ EXV Screens From the EXV TYPE Screen press ENTER to scroll through the screens EXV TYPE DMQ EXV1 4 DETECTED EXV1 4 DETECTED or NODETECT If DMQ is detected and communicating with RSMVQ2R each connected DMQ will be displayed on a separate screen DMQ1 4 PSI DMQ1 4 SUCTION PRESSURE READING Suction Pressure reading from DMQ1 through ...

Страница 28: ...us 1 contact is closed BIN2 This green LED will light up when Compressor Status 2 switch is closed BIN3 This green LED will light up when the Outside Coil Temperature switch is closed BIN4 This green LED will light up when the Emergency Shutdown switch is closed Relay LEDs RLY1 RLY4 These green LEDs will light up when the relays are enabled and will stay lit as long as they are active RSMVQ2R Step...

Страница 29: ...39 66 18 9 12758 2 802 130 54 4 3317 1 246 68 20 12191 2 746 135 57 2 3015 1 159 69 20 6 11906 2 717 140 60 2743 1 077 70 21 1 11652 2 691 145 62 7 2502 1 001 71 21 7 11379 2 661 150 65 6 2288 0 931 Coil Temperature Sensor Testing The following sensor voltage and resistance table is provided to aid in checking sensors that appear to be operating incorrectly Many system operating problems can be tr...

Страница 30: ... terminal See Table 7 this page Head Pressure Transducer Chart Voltage Pressure Voltage Pressure 0 5 0 2 6 350 0 6 17 2 7 367 0 7 33 2 8 384 0 8 50 2 9 400 0 9 67 3 0 417 1 0 83 3 1 434 1 1 100 3 2 450 1 2 117 3 3 467 1 3 133 3 4 484 1 4 150 3 5 500 1 5 167 3 6 517 1 6 183 3 7 534 1 7 200 3 8 550 1 8 217 3 9 567 1 9 233 4 0 584 2 0 250 4 1 600 2 1 267 4 2 617 2 2 283 4 3 634 2 3 300 4 4 650 2 4 31...

Страница 31: ... to AO1 and the Condenser Relay RLY3 is enabled Refer to the figures below for Prism 2 configuration and Modular Service Tool Screen selection RSMVQ2R Condenser Options Configuration Screen Select the 1 Condenser per RSMV option on the above Hand Held Service Tool Screen RSM 1 4 CONFIGURATION Condenser Options 1 Cond per RSMV USE or TO CHANGE Figure 10 Prism 2 Single Condenser Module A Configurati...

Страница 32: ... AO1 and AO2 and Condenser Relays RLY3 and RLY4 Refer to the figures below for Prism 2 configuration and Modular Service Tool Screen selection RSMVQ2R Condenser Options Configuration Screen Select the 2 Condenser per RSMV option on the above Hand Held Service Tool Screen RSM 1 4 CONFIGURATION Condenser Options 2 Cond per RSMV USE or TO CHANGE Figure 11 Prism 2 Two Condensers Module A Configuration...

Страница 33: ... Compressor 2 On Off Compressor 1 Single Danfoss CDS303 VFD Compressor 2 Two Step Compressor 1 Copeland EVCxxx Packaged VFD Compressor 2 On Off NOTE You must also select the model number See Figure 13 this page Compressor 1 Copeland EVCxxx Packaged VFD Compressor 2 Two Step NOTE You must also select the model number See Figure 13 this page Copeland Compressor Model Selection Refer to Figure 13 thi...

Страница 34: ...m VFD Compressor Speed RPM Maximum VFD Compressor Speed RPM Single Danfoss CDS803 VFD 7 900 5250 Single Danfoss CDS303 VFD 8 1000 5100 Single Copeland EVxxxx Modular VFD Determined by Compressor Model Single Copeland EVCxxx Packaged VFD Determined by Compressor Model Compressor 1 Danfoss CDS803 VFD Compressor 2 On Off 9 900 5100 13 900 5610 Compressor 1 Danfoss CDS803 VFD Compressor 2 Two Step 11 ...

Страница 35: ...35 RSMVQ2R Technical Guide NOTES ...

Страница 36: ...0322 AAON Factory Technical Support 918 382 6450 techsupport aaon com AAON Controls Support 866 918 1100 Monday through Friday 7 00 AM to 5 00 PM Central Standard Time Controls Support website www aaon com controlstechsupport NOTE Before calling Technical Support please have the model and serial number of the unit available PARTS For replacement parts please contact your local AAON Representative ...

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