206 Rockwell Automation Publication D2-3518-4 - January 2020
Chapter 10 Troubleshooting the Drive
Incompat MCB-PB 106 Drive rating information stored on the combined power board
inverter EEPROM is incompatible with the Combined Control
board inverter firmware.
Load compatible version files into inverter.
Input I Imbalance 225 Input phase current imbalance exceeded limits. 1. Fault 225 can occur if rectifier Line I Imbalance (22) is greater than
rectifier I Imbalance Lmt (62) for longer than the time in rectifier I
Imbalance Time (63). Verify that rectifier parameters 62 and 63 have the
correct values. If this is the cause of the fault 225, fault 225 should also
appear in the rectifier fault queue (rectifier parameters 243...250).
2. Check for line voltage imbalance. A line voltage imbalance can cause a
line current imbalance. See rectifier Line V Imbalance (23).
3. Check for existence of rectifier instantaneous overcurrent (IOC) faults
(rectifier faults 12, 211, 212, 213) in rectifier fault queue (rectifier
parameters 243...250). Short duration events on AC line can cause
rectifier overcurrents, which can be reported as drive fault 225. See
description of rectifier IOC Redir Time (rectifier 300) and IOC Redir Max
(rectifier 301).
4. Check for existence of rectifier Line V Imbal OL fault (rectifier fault 16) in
rectifier fault queue (rectifier parameters 243...250). This rectifier fault
can be caused by short duration AC line events and is reported as drive
fault 225.
5. Check rectifier current feedback wiring and signal path, which includes
the combined power board and the combined control board.
Input V Imbalance 226 Rectifier Line V Imbalance (23) exceeded rectifier V Imbalance
Lmt (60) for more than the time in rectifier V Imbalance Time
(61).
1. Check for problem in input power distribution.
2. Check line voltage feedback wiring and signal path: includes Combined
I/O board, Combined Control board.
Inv Shunt Trip 14 Drive has activated the shunt trip because the inverter
firmware has commanded it. This can be caused by the
detection of a motor-side (inverter) ground fault (fault 13), or
by the user writing a 1 to bit 0 of inverter Appl Digital Out
(inverter 30).
1. See table entry for Ground Fault (13).
2. Determine why a 1 was written to bit 0 of inverter Appl Digital Out
(inverter 30).
Inv Temp Switch 31 The inverter over temperature switch opened. Verify the connection between TB7-4 and TB7-5 on the I/O board.
Invtr Base Temp 8 Measured temperature of one of the inverter IGBT modules
exceeded limit.
Check for proper temperature and flow rate of coolant.
Invtr Dsat
U+, V+, W+
200
201
202
High current was detected in an IGBT. 1. Check for loose connection in IGBT wire harness.
2. Check IGBTs.
Invtr Dsat
U-, V-, W-
197
198
199
High current was detected in an IGBT. 1. Check for loose connection in IGBT wire harness.
2. Check IGBTs.
Invtr Gate Kill 207 Gate kill contact is open. Close gate kill contact.
Invtr HW Unk 230 Inverter section of power structure hardware reported
unexpected fault.
1. Verify connections between control board and power board.
2. If fault persists, replace power board.
3. If fault still persists, replace control board.
Invtr I Offset U, V, W 18
19
20
An inverter current feedback offset calculated at drive start
was out of range.
Check inverter current feedback signal path.
Invtr IGBT Temp 9 Calculated inverter IGBT junction temperature has exceeded
its rated maximum. See inverter diagnostic parameter 2, IGBT
Junct Temp.
Check for proper temperat
ure and flow rate of coolant.
Invtr Over Cur U, V,
W
203
204
205
High current was detected in an IGBT. 1. Verify proper motor data is entered.
2. Reduce current limit.
Table 22 - Fault Descriptions and Corrective Actions (Frame 4) (Continued)
Fault
No.
Type
Description Action
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