Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control - Manual (Page 140)

140 Rockwell Automation Publication 7000-UM202B-EN-P - June 2014
Chapter 3 Component Definition and Maintenance
Replacing a DC/DC Power Supply
Figure 128 - Replacing a DC/DC power supply
1. With the drive energized, check that all output voltages are present
(view 1).
2. De-energize the drive, isolate and lock out the control power, and remove
all wire connections from the unit (view 1).
3. Remove four M6 (H.H.T.R.S.) so you can remove the DC/DC power
supply assembly from the low voltage panel (view 1).
4. Remove four M4 (P.H.M.S.) and nylon shoulder washers from the back of
the mounting plate (view 2).
5. Install the new DC/DC power supply. Ensure you replace the black
insulation between the DC/DC power supply and the mounting plate.
Repeat steps 4, 3, 2, 1 in this order to replace unit (view 2).
6. Reconnect the P4 plug ground wire to the ground by the M10 bolt.
Take the following precaution when replacing printed circuit boards.
• Disconnect all drive power.
• Leave the replacement board in the anti-static bag until needed.
• Use an anti-static wrist strap, grounded in the low voltage control section.
There are no direct screw/terminal connections on any of the low voltage circuit
boards. All wire/terminal connections plug into the circuit boards. This means
that changing boards only requires the removal of the plugs, minimizing the
chance of mistakes when reconnecting all of the wiring.
M4 Hardware and Nylon
Shoulder Washer
Mounting Plate
Black
Insulation
Part ID Label DC/DC Power
Supply
M6 Hex Head
Cap Screw