Rockwell Automation Publication 7000-TG002J-EN-P - March 2015 45
Fault Messages Chapter 1
X U1A Online 192 INVERTER SGCT FAULT
This fault will occur during running operation of the drive. The
drive detects 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 the readings for each
device must be consistent for the fault to occur. Parameter Inv
Dvc Diag Dly] (P268) lets you to 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. The drive detected that the diagnostic feedback from
this device did not match the gating pattern.
• 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.
• For nuisance faults, contact the factory about extending the diagnostic delay.
X U1B Online 198
X U1C Online 204
X U4A Online 195
X U4B Online 201
X U4C Online 207
X V3A Online 194
X V3B Online 200
X V3C Online 206
X V6A Online 197
X V6B Online 203
X V6C Online 209
X W2A Online 193
X W2B Online 199
X W2C Online 205
X W5A Online 196
X W5B Online 202
X W5C Online 208
X X 2U Airflow Loss 492 The cooling airflow velocity on the specified power stack is
below the trip/warn level.
• Be sure that there are no obstructions to the path of the incoming and/or outgoing air
flow.
• Check for cooling fan deterioration.
• Verify if the trip (P840) and warn setting (P841) matched factory recommended values.
X X 2V Airflow Loss 493
X X 2W Airflow Loss 494
X X 2U Over Temp 488 The drive detected high heatsink temperature at the specified
location.
• Verify if the warn (rectifier P112, inverter P316) and trip settings (rectifier P111, inverter
P315) match factory recommended values.
X X 2V Over Temp 489
X X 2W Over Temp 490
X 2U Temp Sensor 500 The specified temperature reading is out of normal range. • Ensure that the temperature sensor is correctly plugged in and is not damaged.
X 2V Temp Sensor 501
X 2W Temp Sensor 502
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Fault Message Fault Code Description Recommended Action(s)
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