Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 145)

Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014 145
Component Definition and Maintenance Chapter 3
Analog Control Board Replacement
To replace the Analog Control Boards,
1. Ensure that all medium voltage and control voltage power to the drive is
isolated and locked out.
2. It is required to remove the transparent sheet on top of the Drive Processor
Module and the Drive Processor Module also before removing the ACB.
Remove the transparent sheet on top of the DPM by removing the four
screws.
3. Use static strap before removing any connectors.
4. Remove the connectors J4, J11 and J12 on DPM after proper
identification and marking if necessary. Use the electrical drawing as the
reference. Remove the four screws holding it on the standoffs above the
ACB.
5. Gently remove the DPM mounted on the four, 34-pin connectors.
6. Remove the screws holding encoder interface board and gently remove the
board mounted on the 8-pin connector
7. Remove the connectors J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J12, J13, J14,
J16, J22, J24, J25, J26, J27 on ACB after proper identification and
marking if necessary. Use the electrical drawing as the reference.
8. Remove the ACB board by removing the four screws, and six standoffs
screwed to support the DPM & encoder interface board.
9. Follow steps 8 through 2 in that order to re-install the boards back into the
low voltage control cabinet.
10. Apply Low Voltage power and complete a System Test and Medium
Voltage tests to ensure the new board functions properly.
Encoder Feedback Board Encoder Options
There are two positional encoder interface boards that may be used with the
PowerFlex 7000 Forge Control. The encoder interface boards do not have any
user accessible test points; however, buffered and isolated versions of each of the
signals A+, A-, B+, B-, Z+ and Z- are available on the ACB at test points TP45-
TP50.
Regardless of which type of encoder board, the following conditions should be
adhered to:
1. Do not attach encoders with open collector outputs to the drive.
Acceptable outputs are Analog Line Driver or Push Pull.