Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 335)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 335
Troubleshooting Chapter 6
11135
11235
11335 C1 Ground Fault
C2 Ground Fault
C3 Ground Fault Resettable
Fault Coast Y The converter input ground current (peak) has exceeded the threshold
set P16 [Gnd Cur Flt Lvl] (port 11) for 5 line cycles. A possible internal
short in the drive between a phase, ground, or the DC bus may have
occurred.
• Verify that the current transducer wiring harness is connected to the
converter gate firing board and that they are functioning properly. If
necessary, replace all three current transducers (CTs).
• If the current transducer wiring harness is connected and the CTs are
functioning properly, replace the converter gate firing board.
• To determine if there is an imbalance between the phases, view the
input phase current values in [Cn L1 Phase Curr], [Cn L2 Phase Curr],
and [Cn L3 Phase Curr] (port 11). [Cn Gnd Current] (port 11) is the
calculated (not measured) ground current based on the phase
currents. If necessary, use trending when the ground fault occurs
upon drive power up.
11136
11236
11336 C1 HS NTC Open
C2 HS NTC Open
C3 HS NTC Open Non-Reset
Fault Coast The converter heatsink NTC is open. The heatsink NTC is mounted on the
converter heatsink and is wired to the converter gate firing board. An
open NTC is assumed when the heatsink temperature is below -40 °C.
• Check for loose connections or damage to the NTC wiring harness.
• Measure the resistance of the NTC and verify that it is within range.
• If the NTC wiring harness and resistance measurement is OK, replace
the converter gate firing board.
11137
11237
11337 C1 HS NTC Short
C2 HS NTC Short
C3 HS NTC Short Non-Reset
Fault Coast The converter heatsink NTC is shorted. The heatsink NTC is mounted on
the converter heatsink and is wired to the converter gate firing board. A
shorted NTC is assumed when the heatsink temperature is above 200 °C.
• Check for loose connections or damage to the NTC wiring harness.
• Measure the resistance of the NTC and verify that it is within range.
• If the NTC wiring harness and resistance measurement is OK, replace
the converter gate firing board.
11138
11238
11338 C1 Brd OvrTemp
C2 Brd OvrTemp
C3 Brd OvrTemp Resettable
Fault Coast Y The gate firing board is over temperature. This fault occurs when the
gate firing board temperature exceeds 70 °C.
• Check the cabinet fan wiring harness for loose connections or
damage and that the fan is running. If necessary, replace the fan
wiring harness and/or fan.
• Lower the ambient temperature.
• Replace the converter gate firing board.
11139
11239
11339 C1 Brd NTC Open
C2 Brd NTC Open
C3 Brd NTC Open Non-Reset
Fault Coast The converter gate firing board NTC is open. An open NTC is assumed
when the temperature is below -40 °C.
• Replace the converter gate firing board.
11140
11240
11340 C1 Brd NTC Short
C2 Brd NTC Short
C3 Brd NTC Short Non-Reset
Fault Coast The converter gate firing board NTC is shorted. A shorted NTC is assumed
when the temperature is above 200 °C.
• Replace the converter gate firing board.
11141
11241
11341 C1 Power Supply
C2 Power Supply
C3 Power Supply Resettable
Fault Coast A power supply input voltage (24V input and/or +/-12V internal supply)
is operating outside of the acceptable range.
• Check input power to the converter gate firing board. The following
thresholds are used:
+24V is below 20.1V
+12V is below 10.0V
+12V is above 15.0V
-12V is above -10.0V
• If the power supply voltage is within the acceptable range, replace
the converter gate firing board.
Event
No. Fault/Alarm Text Type Fault
Action Configuration
Parameter Auto
Reset Description/Action(s)