Access Procedures 3-33
Removing the V Phase
(Middle) Rectifying Board,
Rectifying Module and
Output Power Module
Removal
Important: Do not attempt to disassemble the Output Power Module.
Important: Always replace all three Output Power Modules (do not replace
just one module).
Important: 600V ac input, 460A and 502A frame 11 drives only have one
Rectifying module. The Rectifying module is contained in the
W Phase (right) Power assembly.
1. Remove power from the drive. Refer to Removing Power from the
Drive on page 3-3.
2. Remove the covers from the power structures. Refer to Removing the
Covers from the Power Structure on page 3-13.
3. Remove the power structure from the drive cabinet. Refer to Removing
the Power Structure from the Drive Cabinet on page 3-21.
4. Disconnect the output leads from the bottom of the Output Power
Module.
5. Remove the screws that secure the V Phase (middle) Power assembly to
the drive and remove the Power assembly.
6. Disconnect all the wiring from the Rectifying Board and carefully set it
aside.
Important: For 690V 460A and 502A units, the X50 Jumper must be
removed from the Rectifying Board.
7. Remove the balancing resistor wires from bus bars.
8. Disconnect the cables from the AC input terminals on the Rectifying
Module.
Balancing Resistors
Balancing Resistor Wires
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