Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 329)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 329
Troubleshooting Chapter 6
10104
10204
10304 I1 Overcurr UPos
I2 Overcurr UPos
I3 Overcurr UPos Resettable
Fault Coast Y An instantaneous overcurrent (IOC) has occurred in the U, V, or W phase,
positive or negative leg.
• Reduce the mechanical load.
• Check the motor and connections.
• With motor disconnected, run the drive in open loop, in V/Hz mode
and check for sufficient output phase-to-phase voltages. If an IOC
occurs immediately after restarting the drive, check the appropriate
current sensor.
• Check the power and signal connections to gate driver board for that
phase identified, or replace it. The IGBT could also have failed open
(and the opposite leg is receiving excess current).
10105
10205
10305 I1 Overcurr UNeg
I2 Overcurr UNeg
I3 Overcurr UNeg
10106
10206
10306 I1 Overcurr VPos
I2 Overcurr VPos
I3 Overcurr VPos
10107
10207
10307 I1 Overcurr VNeg
I2 Overcurr VNeg
I3 Overcurr VNeg
10108
10208
10308 I1 Overcurr WPos
I2 Overcurr WPos
I3 Overcurr WPos
10109
10209
10309 I1 Overcurr WNeg
I2 Overcurr WNeg
I3 Overcurr WNeg
10110
10210
10310 I1 Bus Overvolt
I2 Bus Overvolt
I3 Bus Overvolt Resettable
Fault Coast Y The DC bus has exceeded the maximum value.
• Verify the correct voltage on the AC input line.
• Reduce the mechanical load and/or rate of deceleration.
• Compare the DC bus voltage displayed in [In DC Bus Volt] (port 10), in
[Cn DC Bus Volt] (port 11), and with a meter using the DC+ and DC-
test points at the top of the inverter. If the measurements do not
match, the components used for DC bus voltage feedback sensing
may be damaged or incorrect. Replace the power supply, power
control, and power layer interface circuit boards.
10111
10211
10311 I1 Ground Fault
I2 Ground Fault
I3 Ground Fault Resettable
Fault Coast Y A current path to earth ground greater than 25% of drive rating has
occurred.
• Perform a Megger or surge test on a disconnected motor. Replace the
motor, if necessary.
• Check the output phase current displayed in [In U Phase Curr], [In V
Phase Curr], and [In W Phase Curr] (port 10) for an imbalance. [In
Gnd Current] (port 10) is the calculated (not measured) ground
current based on the phase currents.
• If the ground fault happens immediately when the drive is started,
view the values of the output phase current parameters (noted
above) when running the drive with a light load or perform a
trending analysis.
• Re-seat the rating plug and current transducer wiring harness.
10112
10212
10312 I1 IGBT OvrTemp
I2 IGBT OvrTemp
I3 IGBT OvrTemp Resettable
Fault Coast Y An IGBT over temperature has been detected. This value is calculated by
the power layer interface board based on the NTC temperature plus a
rise based on recent currents through the inverter.
• Check the NTC temperature displayed in [In Heatsink Temp] (port 10)
and verify that it is not near the limit. If this value is near the limit,
check for cooling problems caused by a blocked or slow heatsink fan.
• Check the output phase current displayed in [In U Phase Curr], [In V
Phase Curr], and [In W Phase Curr] (port 10) for an imbalance.
• Check for high-current operation at very low speeds, since nearly all
the current goes through one IGBT in this case.
• Replace the power layer interface board.
10113
10213
10313 I1 HS OvrTemp
I2 HS OvrTemp
I3 HS OvrTemp Resettable
Fault Coast Y A heatsink over temperature has occurred in inverter 1.
• Verify that the NTC is not disconnected or shorted.
• Check for cooling problems - the heatsink cooling fan is running
slow, the enclosure filter or heatsink fins are dirty, or the ambient
temperature is too high.
• Check the NTC resistance with a meter. If the resistance is correct,
replace the power layer interface board.
Event
No. Fault/Alarm Text Type Fault
Action Configuration
Parameter Auto
Reset Description/Action(s)