Rockwell Automation 7000 PowerFlex Medium Voltage (B Frame) Commissioning - ForGe (PanelView 550) - Manual (Page 79)

Rockwell Automation Publication 7000-IN006B-EN-P - May 2013 75
Commissioning the Drive Chapter 5
The circuitry for the IGDPS is encapsulated in epoxy. As a result the module
cannot be field-repaired and there are no test points or adjustments available on
this board. If one of the six isolated 20 V output fails, you must replace the entire
board.
IGDPS Board LEDs
There is one green LED on each of the 6 output channels of IGDPS. If the
IGDPS is healthy, then all six LEDs are active. If any of the LEDs in not ON then
the IGDPS might be defective; replace it immediately.
Record the output measurements in the relvant Commissioning Guide data sheet
to ensure all 6 outputs in each IGDPS are functioning. The output voltage
should be within 20V + 2%. There may be more than one IGDPS in the drive.
If a channel fails, refer to the troubleshooting section of the manual for a
replacement procedure.
Gating Tests After testing the drive converters without Medium Voltage and verifying the
power supply output values, test the SCRs and SGCTs under low voltage control
power.
The following procedures describe the next level of device testing:
• Gating Test Mode
• SCR Firing Test
• SGCT Firing Test
If the results of the tests are not as described in the section below, refer to the
PowerFlex 7000 ‘B’ Frame User Manual’s “Component Definition and
Maintenance” section for troubleshooting in the converter section of the drive.
Gating Test Mode
The following procedure explains how to enter gating test mode, and simulate
drive operation by applying gate signals to the SCRs and SGCTs while isolated
from medium voltage. Prior to starting the drive for the first time, perform a
gating test to ensure that each device is functional.