80 Rockwell Automation Publication 7000-TG002J-EN-P - March 2015
Chapter 2 Warning Messages
XIO Power Loss 117 The 24V input to the XIO boards from the ACB has dropped
below 22.8V.
• Verify the DC/DC power supply output.
• Check the XIO LED status and compare them to values in the
manual.
U1A Offline 250 INVERTER SGCT WARNING
This warning occurs if Redn Dvc Inv option is selected in
HardwareOptions1 (P141). This SGCT device on the inverter side
was detected to be faulted after the input contactor was closed
or following a start command or following a drive reset.
• After isolating the drive from medium voltage, be sure that the
device, IGDPS power supply and the fiber-optic signals are not
damaged
• 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
replaced in matched sets during the next outage.
• 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.
NOTE: For Redundant devices, there will be no change in the drive
operation. For N-1 drives, the drive will attempt to run at a load/
speed combination that does not exceed the voltage rating of the
remaining devices.
U1B Offline 256
U1C Offline 262
U4A Offline 253
U4B Offline 259
U4C Offline 265
V3A Offline 252
V3B Offline 258
V3C Offline 264
V6A Offline 255
V6B Offline 261
X X X X X X V6C Offline 267
X X X X X X W2A Offline 251
X X X X X X W2B Offline 257
X X X X X X W2C Offline 263
X X X X X X W5A Offline 254
X X X X X X W5B Offline 260
X X X X X X W5C Offline 266
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Warning Message Warning
Code
Description Recommended Action(s)
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