Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C-Frame) - ForGe Control - Manual (Page 327)

Rockwell Automation Publication 7000L-UM301D-EN-P - June 2014 327
Component Definition and Maintenance Chapter 5
The output of the UPS feeds a 300W AC/DC Power Supply. This is 20% of the
standard AC/DC Power Supply used in the drive because the load represented by
the DC/DC Power Supply is much smaller than the load of the IGDPS boards,
and we are able to reduce the size accordingly. We still use the standard AC/DC
Power Supply to feed the IGDPS boards. The 300W AC/DC Power Supply has
its AC input monitored by the UPS, and the DC output is monitored by the
ACB board for fault conditions.
There is also a hold-up capacitor on the output of the 300W AC/DC Power
Supply to maintain the 56VDC in the event of a failure of the power supply.
UPS Replacement Procedure
1. Ensure Control Power has been isolated and locked-out.
2. Remove the hardware that fastens the holding bracket to the cabinet
assembly and remove the holding bracket.
3. Disconnect the input and output wiring connected to and from the UPS.
4. Disconnect the 15-pin status plug from the UPS.
5. Remove the UPS, and install the new UPS.
6. Reconnect all the connections removed in the previous steps.
7. Before reconnecting the mounting bracket, apply control power to the unit
and ensure the UPS is programmed for AS400 communication protocol.
Refer to the manual that comes with the UPS for instructions.
8. Once this has been confirmed, install the mounting bracket.