Rockwell Automation Publication 7000-TG002J-EN-P - March 2015 51
Fault Messages Chapter 1
X 2U1A OfflineShrt 390 6P or 18P SCR RECTIFIER FAULT
(Offline Short-Circuit)
For SCR rectifiers, this fault will occur after the initial contact closure
or during the diagnostic sequence after a start command. This is the
first test on the rectifier. When all devices blocking, the feedback from
the devices should toggle from open to short to open every time the
line voltage sine wave passes through zero. If this is consistently
showing short (no feedback), then the drive assumes that the device
is short-circuited.
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 cable integrity from SCRGD board transmitter to FOI board receiver.
Replace all faulty components.
X 2U1B OfflineShrt 396
X 2U1C OfflineShrt 402
X 2U4A OfflineShrt 393
X 2U4B OfflineShrt 399
X 2U4C OfflineShrt 405
X 2V3A OfflineShrt 392
X 2V3B OfflineShrt 398
X 2V3C OfflineShrt 404
X 2V6A OfflineShrt 395
X 2V6B OfflineShrt 401
X 2V6C OfflineShrt 407
X 2W2A OfflineShrt 391
X 2W2B OfflineShrt 397
X 2W2C OfflineShrt 403
X 2W5A OfflineShrt 394
X 2W5B OfflineShrt 400
X 2W5C OfflineShrt 406
XXXX 3U1B OfflineShrt 444
XXXX 3U4B OfflineShrt 447
X X X X 3V3B OfflineShrt 446
X X X X 3V6B OfflineShrt 449
X X X X 3W2B OfflineShrt 445
X X X X 3W5B OfflineShrt 448
XXXX 4U1C OfflineShrt 450
XXXX 4U4C OfflineShrt 463
XXXX 4V3C OfflineShrt 452
XXXX 4V6C OfflineShrt 455
XXXX 4W2C OfflineShrt 451
XXXX 4W5C OfflineShrt 454
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Fault Message Fault Code Description Recommended Action(s)
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