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Rockwell Automation Publication 20P-TG001C-EN-P - February 2018
27
Component Test Procedures
Chapter 2
This signal is a square wave signal with a 90° lag phase displacement as
compared to the AC voltage signal.
2. Measure the gate signals at pins XR-1 and XR-2 on the cable. The figure
that is shown here displays the following signals from top to bottom:
• If the gate signals are missing, replace the control board.
• If the gate signals are present, replace the field board.
Channel
Signal
1
U1-V1 Sync
4
Ie - LEM current feedback signal that is taken on LA-LB terminal
2
ITF1 pulse
3
ITF2 pulse
LA-LB
U1-V1 Sync
ITF1 Pulse
ITF2 Pulse