48 Rockwell Automation Publication 7000-TG002J-EN-P - March 2015
Chapter 1 Fault Messages
X 2U1A Gating Loss 300 PWM RECTIFIER SGCT FAULT
(Gating Fiber-Optic Loss)
This fault will occur during the initial contactor closure, the
diagnostic sequence after a start command, or the diagnostic
sequence after a stop command. The rectifier monitors the
state of the feedback before a gate pulse is given, and
monitors the feedback after a gate pulse has been sent.
This fault occurs when the feedback was high from the device
before gating, and is still high from the device after gating.
The drive then assumes the gating pulse must not have
reached the 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
• Check that the fiber-optic cables are seated properly in the optical interface board and the
SGCT firing card.
• Check that the fiber-optic cable is not pinched or 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 changed.
• Check the LED status of the SGCT gate driver card for abnormal readings.
• Complete a Gating test mode check on the devices.
• Verify all the power connections to the SGCT firing card are seated properly.
X 2U1B Gating Loss 306
X 2U1C Gating Loss 312
X 2U4A Gating Loss 303
X 2U4B Gating Loss 309
X 2U4C Gating Loss 315
X 2V3A Gating Loss 302
X2V3B Gating Loss308
X 2V3C Gating Loss 314
X 2V6A Gating Loss 305
X2V6B Gating Loss311
X 2V6C Gating Loss 317
X 2W2A Gating Loss 301
X2W2B Gating Loss307
X 2W2C Gating Loss 313
X 2W5A Gating Loss 304
X2W5B Gating Loss310
X 2W5C Gating Loss 316
All Drive Types
PF7000A
PF7000B
PF7000C
Marine Drive
Heat pipe Drive
Fault Message Fault Code Description Recommended Action(s)
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