42 Rockwell Automation Publication 7000-TG002J-EN-P - March 2015
Chapter 1 Fault Messages
X UV Blcked Inlet 475 Low air pressure reading coming back from analog air
pressure transducer located between the converter sections.
Note: This fault word is used exclusively on Heatpipe drives.
• Ensure that there are no obstructions to the path of the incoming and/or outgoing air
flow.
• Check the cooling fan for abnormal operation.
• Verify if the trip setting (P319) matched factory recommended value.
X VW Blcked Exhst 479 High air pressure reading coming back from analog air
pressure transducer located between the converter sections.
• Ensure that there are no obstructions to the path of the incoming and/or outgoing air
flow.
• Check the cooling fan for abnormal operation.
• Verify if the trip setting (P319) matched factory recommended value.
X VW Blcked Inlet 476 Low air pressure reading coming back from analog air
pressure transducer located between the converter sections.
Note: This fault word is used exclusively on Heatpipe drives.
• Ensure that there are no obstructions to the path of the incoming and/or outgoing air
flow.
• Check the cooling fan for abnormal operation.
• Verify if the trip setting (P319) matched factory recommended value.
X U1A Offline 246 INVERTER SGCT FAULT
This fault will only occur during the initial contactor closure
and the diagnostic sequence after a start command. The
inverter monitors the state of the feedback before a gate
pulse is given, and monitors the feedback after a gate pulse
has been sent. The SGCT has smart diagnostics, so the
feedback may indicate short before firing, and if the pulse is
received and the device is really shorted, the diagnostic will
toggle the feedback to let you know the problem is with the
device, or the power supply for that device.
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, range 19.6…20.4V
• Verify all the power connections to the SGCT firing card are seated properly.
XU1B Offline252
X U1C Offline 258
XU4A Offline249
XU4B Offline255
X U4C Offline 261
X V3A Offline 248
X V3B Offline 254
X V3C Offline 260
X V6A Offline 251
X V6B Offline 257
X V6C Offline 263
X W2A Offline 247
X W2B Offline 253
X W2C Offline 259
X W5A Offline 250
X W5B Offline 256
X W5C Offline 262
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Fault Message Fault Code Description Recommended Action(s)
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