Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 92)

92 Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014
Chapter 3 Component Definition and Maintenance
Testing Equipment
Ensure you have the following equipment available in order to perform testing
tasks.
• SPS test power harness (80018-695-51)
• Digital multimeter
1. Disconnect the snubber connection to J1 of the SPS board.
2. Connect one of the SPS test power harness connectors to the SPS J1
connector.
3. Plug the AC input end of the SPS test power harness into the appropriate
drive receptacle.
The green LED (DS1) at the front of the board should be on.
4. Measure between the TP4 and TP6 on the SPS board. It should be at a
level of
√
2 x VIN
RMS
.
This can range from 120V (85V input) to 375V (265V input).
5. Measure between TP15 and TP14 on the SPS board. It should be at a level
of 20V DC, +/- 400 mV.
If these readings are not correct, replace the tested SPS board with a new
board and return the faulty board to the factory.
Always connect the SPS test harness connectors to the SPS board before applying
input power to the SPS test harness.
Certain shorted components on the SPS board, such as any of the input diode
bridge diodes D10, D11, D13 or D14, will cause the input breaker to the SPS test
power harness to trip. In this situation, replace with a new unit and return the
faulty board to the factory.
WARNING: When the SPS test harness is installed and powered, there are
lethal voltages on the SPS board. Always connect multimeter test leads to the
SPS test points before applying input power to the SPS test harness.
WARNING: When testing with the SPS harness is complete, remove the test
harness from all of the SPS boards and remove the SPS test harness from the
power converter cabinet. Do NOT leave the SPS test harness in the power
converter cabinet. Reconnect all of the SGCT snubber connections to the J1
connectors on the SPS boards.