Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) - Manual (Page 43)

Rockwell Automation Publication 7000-UM151E-EN-P - January 2013 43
Component Definition and Maintenance Chapter 3
Replacing Filter Capacitors
1. Isolate and lock out all power to the drive.
2. Note the location of all the cables and mark them accordingly.
3. Remove the 4 power connections to the terminals, and the single ground
connector from the drive to the capacitor frame, located at the back top
right corner of the capacitor.
4. Remove the front bracket that holds the capacitor in place. At the rear of
the capacitor, there is no hardware securing the capacitor; it fits into a slot
in the assembly.
5. Remove the capacitor from the drive.
6. Install the new capacitor, sliding it back until it fits into the slot. Fasten the
front bracket.
7. Reconnect all the power cables and the ground connection. These use
M14 hardware, but should only be tightened to 30 Nm (22 ft.-lbs.) due to
capacitor mechanical constraints. You may want to fasten these
connections before fully sliding the capacitor into place depending on the
available space.
8. Follow the instruction labels on each capacitor to tighten the terminal
connections.
9. Reinstall the removed sheet metal, and complete one final check to ensure
connections are secure and correct.
WARNING: Allow 5-10 minutes for motor capacitors to safely discharge
voltage prior to opening cabinet doors.
ATTENTION: To prevent electrical shock, disconnect the main power
before working on the drive. Verify that all circuits are voltage-free using
a hot stick or appropriate voltage-measuring device. Failure to do so may
result in injury or death.
IMPORTANT Capacitors can weigh as much as 100 kg (220 lbs). Use two or more
people to remove a capacitor.