Carrier D2-3466-2 instruction manual Indentifying PMC Board Fault Codes and Recovering

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6.6Indentifying PMC Board Fault Codes and Recovering

ATTENTION: Viewing the PMC board LEDs requires electrical circuits to be exposed. Stay clear if unit must be running. Disconnect and lock

!out or tag power source if contact must be made. Failure to observe this precaution could result in severe bodily injury or loss of life.

Table 6.5 lists PMC board fault codes. These faults can be identified using the three LEDs located on the Regulator board.

Table 6.5 – PMC Board Fault Codes

Status of LEDs 1-3

Fault Description

Corrective Action

 

 

 

LEDs 1-3 all on.

Normal operation

None required.

 

(60 Hz, 50% duty);

 

 

no fault.

 

 

 

 

LEDs 1-3 all off.

VAC_LINE = ‘lo’

None required. The board will

 

 

recover when the line

 

 

becomes present.

 

 

 

LEDs 1-3 flash in a

VDC_CHG = ‘lo’

Reset board.

3-flash sequence.

 

 

 

 

 

LEDs 1-3 flash in a

ASYM_FAULT = ‘lo’

Reset board.

2-flash sequence.

 

 

 

 

 

LEDs 1-3 flash in a

ACGNDFLT = ‘lo’

Reset board. (This circuit was

1-flash sequence.

 

removed on the 350 HP

 

 

assembly.)

 

 

 

6.7Resetting a Checksum (CHS) Fault

Perform the following procedure when a new Regulator board is installed or if a CHS fault repeats.

Step 1. Press and hold STOPIRESET, PROGRAM, and DOWN ARROW for 5 to 10 seconds. A PUn error should appear.

Step 2. Press PROGRAM. P.--- is displayed.

Step 3. Press ENTER. P.000 is displayed.

Perform steps 4 through 7 if access to the second menu has not already been enabled.

Step 4. Press UP ARROW until P.006 is displayed.

Step 5. Press ENTER.

Step 6. Press UP ARROW until 107 is displayed.

Step 7. Press ENTER.

Perform steps 8 through 11 if changing modes of operation (V/Hz or Vec). Otherwise, skip to step 12.

Troubleshooting the Drive

6-15

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Contents Carrier VFD Quick Reference Page Page Page Page Page Contents Carrier VFD Quick Reference Getting Assistance from Reliance Electric Required PublicationsCarrier VFD Quick Reference Replace with 2.fm 11 X 17 Z-fold Carrier VFD Quick Reference Monitor Mode Carrier VFD Quick Reference For Carrier Drives Carrier VFD Quick Reference Record the following nameplate information Record the following job informationCarrier VFD Quick Reference Verifying That DC Bus Capacitors Are Discharged Test Equipment Needed To TroubleshootPOS NEG TP1 TP2 Initial DC Bus Checking the Power Modules and Motor with Input Power Off Igbt Alarm Codes Troubleshooting the Drive Using Error CodesFault Codes Error LogAlarm Code Description Alarm Cause Corrective Action Identifying Alarm Codes and RecoveringFault Code Description Fault Cause Corrective Action Identifying Fault Codes and RecoveringIPL OPL Input Ground Fault Excessive Asymmetrical Bus WhenSlow Ramp Rate of DC Bus DC Carrier VFD Quick Reference Troubleshooting the Drive Code Fault Description Fault Cause Corrective Action Identifying Fatal Fault Codes and RecoveringIndentifying PMC Board Fault Codes and Recovering Resetting a Checksum CHS FaultStatus of LEDs Fault Description Corrective Action Model Amps Code Number Technical Writing Internal Use DIFPage Page Publication D2-3466-2 May 2005 -- Supercedes D2-3466-1 June