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Carrier 48/50AJ specifications Appendix C - Vfd Information, Table A — VFD Terminal Designations

Models: 48/50AJ

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APPENDIX C — VFD INFORMATION

APPENDIX C — VFD INFORMATION

On variable air volume units with optional VFD, the supply fan speed is controlled by a 3-phase VFD. The VFD is located in the supply fan section behind a removable panel. The VFD speed is controlled directly by the ComfortLink™ controls through a 4 to 20 mA signal based on a supply duct pressure sensor. The VFD has a display, which can be used for service diagnostics, but setup of the building pressure and control loop factors should be done through the scrolling marquee display. The VFD is powered during normal operation to prevent

condensation from forming on the boards during the off mode and is stopped by driving the speed to 0 (by sending a 4 mA signal to the VFD).

The A Series units use ABB VFDs. The interface wiring for the VFDs is shown in Fig. A. The VFD connects through an isolation board to the 4 to 20 mA RCB board. Terminal designations are shown in Table A. Configurations are shown in Table B.

Table A — VFD Terminal Designations

TERMINAL	FUNCTION
U1
V1
W1	Three-Phase Main Circuit Input Power Supply
U2
V2	Three-Phase AC Output to Motor, 0 V to
W2	Maximum Input Voltage Level
X1-11 (GND)
X1-12 (COMMON)	Factory-supplied jumper
X1-10 (24 VDC)
X1-13 (DI-1)	Run (factory-supplied jumper)
X1-10 (24 VDC)	Start Enable 1 (Factory-supplied jumper). When
X1-16 (DI-4)	opened the drive goes to emergency stop.
X1-2 (AI-1)
X1-3 (AGND)	Factory wired for 4 to 20 mA remote input

A48-7712

Fig. A — VFD Wiring

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Carrier 48/50AJ specifications Appendix C - Vfd Information, Table A — VFD Terminal Designations, Fig. A — VFD Wiring

Contents

Multi-StageConstant Volume Units with CONTENTSTwo-StageConstant Volume Units with SAFETY CONSIDERATIONS CONTENTS contAPPENDIX A — LOCAL DISPLAY TABLES . . . . APPENDIX D - MODE SELECTIONTable 1 — A Series Product Line GENERALBASIC CONTROL USAGE Fig. 1 — Scrolling Marquee Fig. 2 — Accessory Navigator DisplayFig. 3 — System Pilot User Interface ComfortLink Display Modes START-UP AIRFLOW Table 6 — Fan Performance — 48AJ,AK036 Units Table 8 — Fan Performance — 48AJ,AK041 Units Table 10 — Fan Performance — 48AJ,AK051 Units AIRFLOW AIRFLOW Table 15 — Fan Performance — 50AJ,AK036 Units Table 17 — Fan Performance — 50AJ,AK041 Units Table 19 — Fan Performance — 50AJ,AK051 Units AIRFLOW CFM 4,000 5,000 6,000 7,000 7,500 8,000 Table 24 — Fan Performance — 48AW,AY036 Units Table 26 - Fan Performance - 48AW,AY041 Units Table 28 — Fan Performance — 48AW,AY051 Units 4.81 0.62 Table 33 — Fan Performance — 50AW,AY036 Units Table 35 — Fan Performance — 50AW,AY041 Units Table 37 - Fan Performance - 50AW,AY051 Units Table 39 — Motor Limitations CONTROLS QUICK START figure the unit, perform the following Indoor Air Quality IAQ Options SERVICE TESTFans in Service Test Mode — Upon entering the Demand Controlled Ventilation Control — THIRD PARTY CONTROLCONTROLS OPERATION SYSTEM MODES Operating Modes→SYS.M Table 42 — Operating Modes Display TableFire Fig. 4 — Mode SelectionSystem SmokeC.TYP = 1 VAV-RATand C.TYP = 2 VAV-SPT •MAT.S = Table 43 — Unit Configuration•MAT.S = MAT.S =under Configuration→UNIT Table 46 — Supply Air Reset Configuration Table 44 - Machine Dependent Configurations→SA.S.R Table 45 — SetpointsTable 47 — Cooling Configuration Protection Label Fig. 5 — Advanced Scroll TemperatureFig. 6 — Recommended Minimum Cool-Down Time After Compressor is StoppedFig. 8 — Cool Mode Evaluation •Lo Cool Mode mechanical stages = Table 50 — 2-StageSequence — 48/50AJ,AW030-060 Table 49 — 2-StageSequence — 48/50AJ,AW020-027Table 56 — 2-StageSequence — 48/50A2,A4030-060 Table 55 — 2-StageSequence — 48/50A2,A4020-027STAGE Z.PLU = Configuration→COOL→Z.GN * 10 + Z.MIN = Configuration→COOL→Z.GN * –10+Table 61 - Run Status Mode Trip Helper R.PCT = MAT – EDT/ C.CAPTable 62 — Run Status Cool Display •MAT.S = Inputs→GEN.I→DL.S1 Inputs→GEN.I→DL.S2•MAT.S = •MAT.S =•Configuration→COOL→M.M. – Motor Master Control? Table 63 - Demand Limit ConfigurationEC.C.P = Setpoints→SA.LO + Inputs→RSET→SA.S.R Table 64 — Condenser Fan StagingTable 65 — Heating Configuration Table 66 — Heat/Cool Set Point Offsets Fig. 9 — Heating OffsetsTable 67 — Mode Trip Helper Table Error = HT.C.P – LATTable 69A — Staged Gas Heat — 48AJ,AK,AW,AY Units Table 68 — Staged Gas ConfigurationTable 69B — Staged Gas Heat — 48A2,A3,A4,A5 Units Table 74 — IGC LED Indicators •For all other cases, the trip point is T.V.UN Table 75 — Static Pressure Control Configuration Fan Status Monitoring Table 78 - Dirty Filter Switch Points Table 76 — Static Pressure Reset Related PointsTable 77 - Fan Status Monitoring Configuration Inputs→GEN.I→E.SW Fig. 10 — Psychrometric Chart forE.SEL = Enthalpy ControlFig. 11 — Custom Changeover Curve Example Table 79 — Economizer Configuration TableC.TYP = C.TYP =C.TYP = C.TYP =Table 80 — Economizer Run Status Table Table 82 — Power Exhaust Staging BP.CF = Table 81 — Building Pressure ConfigurationTable 83 — Power Exhaust Staging BP.CF = RELEVANT ITEMS Point Configuration→IAQ→AQ.SP→D.F.OF. The con Point Configuration→IAQ→AQ.SP→D.F.ON. The fanFig. 12 — IAQ Control Fig. 13 — IAQ Response CurveIAQ Purge Configuration → IAQ → IAQ.P → IQ.PG— Table 85 — Dehumidification Configuration Table 84 - Indoor Air Quality ConfigurationCarrier Comfort Network CCN System - It Temperature Compensated Start — This logic isTable 86 — CCN Configuration Table 88 - Sensor Trim Configuration Table 87 — Alert Limit ConfigurationDiscrete Switch Logic Configuration — The SW.LG TIME CLOCK CONFIGURATION Table 92 — Remote Switch Logic Configuration TROUBLESHOOTING Table 94 — Cooling Service Analysis Table 94 — Cooling Service Analysis cont Table 96 — Electric Heat Service Analysis Table 95 — Gas Heating Service AnalysisA48-5656 Fig. 14 — IGC Service Analysis LogicTEMP TEMP TEMP 48/50AJ,AK,AW,AY Units Only 48/50AJ,AK,AW,AY Units Only PRESSURE 48/50A2,A3,A4,A5 Units Only 48/50A2,A3,A4,A5 Units Only cont Y.PLU = –ADD.R*0.4375 R.PCT = MAT - EDT/C.CAPY.MIN = -SUB.R*0.4375 Table 106 - Economizer Run Status Display Table Table 105 — Auto View of Run Status Display TableZ.MIN = Configuration→COOL→Z.GN * –10+ Z.PLU = Configuration→COOL→Z.GN * 10 +Table 108 — Mode Trip Helper Display Table Table 107 — Cooling Information Display TableTable 109 — CCN/Linkage Display Table Table 110 — Compressor Run Hours Display TableTable 112 — Time Guard Display Table Table 114 — Alert and Alarm Codes Table 114 — Alert and Alarm Codes cont A051 Circuit A, Compressor 1 Stuck On Failure T092 Circuit A Suction Pressure Transducer Failure Demand Limit Select Configuration→DMD.L→DM.L.S T303 Supply Temperature Above Limit— If the supply at Configuration→UNIT→SENS→FLT.S MAJOR SYSTEM COMPONENTS Factory-InstalledComponents~ ~ ~ ~ ~ ~~ RED JUMPER WIRE MUST BE ADDEDTO NEXT PAGE a48-8355a48-8355 a48-8355 ~ ~~ ~ ~ ~ ~ ~ ~ ~~ ~A48-7294 ~ TO NEXT ~PAGEa48-8356 ~~~~a48--8357 A48-7296 TO NEXT PAGEA48-8358 a50-8228 TO NEXT PAGE A48-7298a48-8360 FROM PREVIOUS PAGEPage a48-8361 SW1 SW2 OR DEHUMIDIFY SWITCHa48-8362 A48-7302 LEGEND LEGEND AND NOTES FOR FIG.A48-7811 Fig. 26 — Main Base Board MBBPOINT A48-7707 Fig. 28 — Staged Gas Heat Control Board SCBCEPL130351 Fig. 29 — Controls Expansion Board CEMCEBD430351 TESTFig. 30 — Scrolling Marquee Table 119 — Controls Expansion Board CEM InputsTable 120 — IGC Board Inputs and Outputs Table 121 — VFD Terminal Designations Fig. 31 — VFD WiringTB5 TB6 W2 GTable 122 — Field Connection Terminal Strips Fig. 34 — Accessory Navigator Display Fig. 35 — CCN System Architecture Fig. 37 - Spark Gap Adjustment SERVICEFig. 36 — Door Latch Fig. 38 — Typical Gas Heating SectionFig. 39 — Gas Heat Section Details Lubrication Fig. 40 — Evaporator-FanAlignment and AdjustmentBelt Tension Adjustment — To adjust belt tension Evaporator Fan Service and ReplacementEvaporator-FanMotor Replacement Fig. 42 — Belt Tension AdjustmentGas Valve Adjustment Condenser-FanAdjustmentFig. 43 — Condenser-FanAdjustment Table 123 - Round Tube, Plate Fin Unit Chargea48-8401 25 and 27 Ton MCHX CIRCUIT B Charging Chart a48-840225 and 27 Ton MCHX CIRCUIT A Charging Chart 30 Ton MCHX CIRCUIT B Charging Chart 30 Ton MCHX CIRCUIT A Charging Chart35 Ton MCHX CIRCUIT B Charging Chart 35 Ton MCHX CIRCUIT A Charging Chart50 Ton MCHX Charging Chart 40 Ton MCHX Charging Chart60 Ton MCHX CIRCUIT B Charging Chart 60 Ton MCHX CIRCUIT A Charging ChartFig. 52 — Main Burner Removal Fig. 51 — Gas Valve Part Number EF33CW271MODE — RUN STATUS APPENDIX A — LOCAL DISPLAY TABLESMODE — SERVICE TEST APPENDIX A - LOCAL DISPLAY TABLES contMODE — TEMPERATURES MODE — RUN STATUS contMODE — PRESSURES APPENDIX A — LOCAL DISPLAY TABLES contMODE — SET POINTS MODE — INPUTSAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — CONFIGURATIONMODE — INPUTS cont MODE — OUTPUTSDEFAULT MODE - CONFIGURATION contAPPENDIX A — LOCAL DISPLAY TABLES cont ITEM→BP.CF APPENDIX A — LOCAL DISPLAY TABLES cont→CCNA APPENDIX A — LOCAL DISPLAY TABLES contAPPENDIX A — LOCAL DISPLAY TABLES cont MODE — ALARMSMODE — TIME CLOCK MODE - OPERATING MODESSTATUS DISPLAY TABLES APPENDIX B — CCN TABLESSTATUS DISPLAY TABLES cont APPENDIX B - CCN TABLES contTABLE APPENDIX B — CCN TABLES contSTATUS DISPLAY TABLES cont APPENDIX B — CCN TABLES cont CONFIG TABLESSET POINT TABLE APPENDIX B — CCN TABLES cont CONFIG TABLES contSERVICE-CONFIGTABLES APPENDIX B — CCN TABLES cont SERVICE-CONFIGTABLES contTABLE SERVICE-CONFIGTABLES contAPPENDIX B — CCN TABLES cont DEFAULT SERVICE-CONFIGTABLES contAPPENDIX B — CCN TABLES cont TABLEAPPENDIX B — CCN TABLES cont MAINTENANCE DISPLAY TABLESAPPENDIX B — CCN TABLES cont MAINTENANCE DISPLAY TABLES contDISPLAY NAME RANGETABLE MAINTENANCE DISPLAY TABLES contAPPENDIX B — CCN TABLES cont TABLE MAINTENANCE DISPLAY TABLES contAPPENDIX B — CCN TABLES cont APPENDIX B - CCN TABLES cont TIME SCHEDULE CONFIG TABLEMAINTENANCE DISPLAY TABLES cont Table A — VFD Terminal Designations Fig. A — VFD WiringAPPENDIX C - VFD INFORMATION Fig. B — VFD Keypad Table B — VFD ConfigurationsAPPENDIX C — VFD INFORMATION cont APPENDIX C — VFD INFORMATION cont Fig. C — Standard Display ExampleAPPENDIX C — VFD INFORMATION cont To set the clock, perform the following procedurethe status LED on the control panel APPENDIX C — VFD INFORMATION contAPPENDIX C - VFD INFORMATION cont Table C — Fault CodesTable E — Maintenance Intervals Table D — Alarm CodesCheck the heat sink as follows when necessary 1.Remove power from driveFig. E — Main Fan Replacement Fig. D - Main Fan Replacement Frame Sizes R1-R4Frame Sizes R5 and R6 APPENDIX C — VFD INFORMATION contA48-7716 Fig. F - Internal Enclosure Fan ReplacementAPPENDIX C — VFD INFORMATION cont APPENDIX D — MODE SELECTION PROCESS Configuration→SP→SP.CF = 1,2 and the staticFig. B — UPC Open Controller Fig. A — Address Rotary SwitchesAPPENDIX E — UPC OPEN CONTROLLER Table A — SW3 Protocol Switch Settings for MS/TP Configuring the BAS Port for BACnet MSFig. C — DIP Switches Fig. D — Network WiringAPPENDIX E — UPC OPEN CONTROLLER cont Fig. E — BT485 Terminator InstallationTable C — MS/TP Wiring Recommendations APPENDIX E — UPC OPEN CONTROLLER cont Fig. F — BACview6 Device ConnectionAPPENDIX E — UPC OPEN CONTROLLER cont Configuring the UPC Open Controllers PropTable E — LED Status Indicators APPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LISTAPPENDIX E — UPC OPEN CONTROLLER cont NETWORK POINTS LIST contReturn Air Relative Humidity APPENDIX E — UPC OPEN CONTROLLER contNETWORK POINTS LIST cont BACNET APPENDIX E — UPC OPEN CONTROLLER contNETWORK POINTS LIST cont BACNET APPENDIX E — UPC OPEN CONTROLLER contNETWORK POINTS LIST cont NETWORK POINTS LIST cont Local Machine DisableAPPENDIX E — UPC OPEN CONTROLLER cont BACNET APPENDIX E — UPC OPEN CONTROLLER contNETWORK POINTS LIST cont Internal wiring INDEXMulti-stageconstant volume units with Multi-stageconstant volume unitsCatalog No. Copyright 2010 Carrier CorporationPrinted in U.S.A Form 48/50A-9TDEFAULT CONTROLS SET POINT AND CONFIGURATION LOGITEM EXPANSIONCL-2 CL-3 CL-4 CL-5 DEFAULTITEM EXPANSIONPRE-START-UP UNIT START-UPCHECKLISTTEMPERATURES START-UP