Rockwell Automation Publication 7000-TG002J-EN-P - March 2015 49
Fault Messages Chapter 1
X 2U1A Online 264 PWM RECTIFIER SGCT FAULT
This fault will occur during operation of the drive. The drive
has detected that the feedback from the device was not
correct, and does not wait to determine the exact problem.
The drive polls the entire bridge three times before and three
times after each gating command. All six of these readings for
each device must be consistent for the fault to occur.
Parameter Rec Dvc Diag Dly (P266) lets you change the
number of consecutive firings to eliminate nuisance faults.
It will still poll three times before and after each firing, but
will now require the condition to exist for the number of
consecutive firings set in the diagnostic delay parameter for a
fault to occur.
The firmware now completes a diagnostics sequence
immediately after any drive reset, with the goal of detecting
faults before any destructive action is taken from the next
action
• Complete a resistance check per the instructions in the manual.
• NOTE: SGCTs may not have completely shorted, and still could read in the k range. Any
devices with low suspect readings should be changed.
• Check the LED status of the SGCT gate driver card for abnormal readings.
• Complete a Gating test mode check on the devices.
• Verify the associated 20V power supply is powered and active.
• Verify all the power connections to the SGCT firing card are seated properly.
• Reset the drive and let the offline diagnostics further define the problem.
• For nuisance faults, contact the factory about extending the diagnostic delay.
X2U1B Online270
X 2U1C Online 276
X 2U4A Online 267
X2U4B Online273
X 2U4C Online 279
X 2V3A Online 266
X 2V3B Online 272
X2V3C Online278
X 2V6A Online 269
X 2V6B Online 275
X2V6C Online281
X 2W2A Online 265
X 2W2B Online 271
X2W2C Online 277
X 2W5A Online 268
X 2W5B Online 274
X2W5C Online 280
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Fault Message Fault Code Description Recommended Action(s)
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