Troubleshooting 3-57
7000-TD002A-EN-P – September 2007
WARNING
MESSAGE
WARNING
CODE
DESCRIPTION RECOMMENDED ACTIONS
2U1A OfflineShrt 322
2U1B OfflineShrt 328
2U1C OfflineShrt 334
2U4A OfflineShrt 325
2U4B OfflineShrt 331
2U4C OfflineShrt 337
2V3A OfflineShrt 324
2V3B OfflineShrt 330
2V3C OfflineShrt 336
2V6A OfflineShrt 327
2V6B OfflineShrt 333
2V6C OfflineShrt 339
2W2A OfflineShrt 323
2W2B OfflineShrt 329
2W2C OfflineShrt 335
2W5A OfflineShrt 326
2W5B OfflineShrt 332
2W5C OfflineShrt 338
6P SCR RECTIFIER WARNING
This warning occurs if Redn Dvc Rec option
is selected in HardwareOptions1 (P141) and
is valid only for 6P SCR drives. This SCR
device was detected to be short circuited
after the input contactor was closed or
following a start command. After isolating
the drive from MV, ensure that the device,
snubber circuit, sharing resistor and the
fiber-optic signal are not damaged.
– Complete a resistance check on the
rectifier, including the gate-cathode
resistance, the snubber and sharing
resistors
– Complete a firing check on the rectifier
– Verify the snubber circuitry, and the
sharing resistors
– Verify fiber optic integrity from SCRGD
board transmitter to FOI board receiver
– Replace all faulty components
– NOTE: There is only the Redundant
option available on the Rectifier, and only
on 6P drives (SCR orPWM). You can
not have N-1 operation on the rectifier
since we can not control the line voltage.
2U1A OnlineShrt 304
2U1B OnlineShrt 310
2U1C OnlineShrt 316
2U4A OnlineShrt 307
2U4B OnlineShrt 313
2U4C OnlineShrt 319
2V3A OnlineShrt 306
2V3B OnlineShrt 312
2V3C OnlineShrt 318
2V6A OnlineShrt 309
2V6B OnlineShrt 315
2V6C OnlineShrt 321
2W2A OnlineShrt 305
2W2B OnlineShrt 311
2W2C OnlineShrt 317
2W5A OnlineShrt 308
2W5B OnlineShrt 314
2W5C OnlineShrt 320
6P SCR RECTIFIER WARNING
This warning occurs if Redn Dvc Rec option
is selected in HardwareOptions1 (P141) and
is valid only for 6P SCR drives. This SCR
device was detected to be short circuited
while the drive was running. After isolating
the drive from MV, ensure that the device,
snubber circuit, sharing resistor and the
fiber-optic signal are not damaged.
– For multiple device faults, the risk of a
line to line short exists, so tests with MV
isolated should be attempted
– Complete a resistance check on the
rectifier, including the gate-cathode
resistance, the snubber and sharing
resistors
– Complete a firing check on the rectifier
– Verify the snubber circuitry, and the
sharing resistors
– Verify fiber optic integrity from SCRGD
board transmitter to FOI board receiver
– Replace all faulty components
– For nuisance faults, contact the factory
about extending the Diagnostic Delay
– NOTE: There is only the Redundant
option available on the Rectifier, and
only on 6P drives (SCR orPWM). You
can not have N-1 operation on the
rectifier since we can not control the line
voltage.