Remove Frame 8…15 Power Module

Follow these steps to remove a power module from a frame 8…15 enclosure.
  1. Review the product advisories in the Before You Begin section.
  2. Open the enclosure door.
  3. Remove the protective touch guards from the enclosure.
  4. Loosen the thumb screw that secures the connections cover to the front of the power module.
  5. Use the screw to lift the connections cover up and off the power module chassis.
    Image with the connections cover removed from PowerFlex 755TL and 755TR frame 8 to 15 power module.
  6. Disconnect the PDI and CTL fiber-optic cables, if present, from the power layer interface circuit board.
  7. Without bending the cables to a radius less than 50 mm (2 in.), carefully remove the cables from the power module chassis.
    Image showing connections cover removed to show PowerFlex 755TL and 755TR frame 8 to 15 power module fiber-optic connections
    Item
    Description
    A
    One line side converter with LCL filter.
    B
    Two line side converters with LCL filter.
    IMPORTANT: Minimum inside bend radius for fiber-optic cable is 50 mm (2 in.). Any bends with a shorter inside radius can permanently damage the fiber-optic cable. Signal attenuation increases as inside bend radius is decreased.
  8. If present, disconnect the cable connector P1 from connector J1 on the I/O panel in the power module and remove the cable from the power module chassis.
  9. If present, disconnect the cable connector P2 from connector J2 on the I/O panel in the power module remove the cable from the power module chassis.
  10. Disconnect the cable connector P3 from connector J3 on the I/O panel in the power module and remove the cable from the power module chassis.
  11. Disconnect the cable connector P4 from connector J4 on the I/O panel in the power module and remove the cable from the power module chassis.
    Image with callouts showing wire harness connections of the PowerFlex 755TL and 755TR frame 8 to 15 power module.
  12. Loosen the two M10 x 10 mm hex nuts that secure the power input/output terminals to the DC precharge module or DC link fuse terminals. It is not necessary to remove these hex nuts. A ratcheting wrench is recommended to help access these hex nuts.
  13. Remove the two M10 x 20 mm screws that secure the power module chassis to the control bus frame.
    Image with callouts showing chassis and DC bus connections for PowerFlex 755TL and 755TR frame 8 to 15 power modules.
  14. Leave the two M10 x 20 mm screws that secure the power module chassis to the floor mounting bracket while preparing the PowerFlex 750-Series service cart or service ramp.
    To remove the module using the
    PowerFlex®
     750-Series service cart, follow the procedures that are detailed in the PowerFlex 750-Series Service Cart and DCPC Module Lift Instructions, publication 750-IN105. To remove the module using
    PowerFlex®
     755TM service ramp, follow the procedures that are detailed in the PowerFlex 755T Module Service Ramp Instructions, publication 750-IN108.
  15. To release the power module, remove the two remaining M10 screws.
  16. Remove the power module from the enclosure.
    Image showing a line side converter removed from the first power bay of a PowerFlex frame 10 drive using the service cart.
    ATTENTION:
    Risk of injury, death, or equipment damage exists.
    IGBT power and LCL filter modules have a high center of gravity and may pose a tip-over hazard. To guard against death, serious personal injury, or equipment damage, do not subject the module to high rates of acceleration or deceleration while transporting. Do not push or pull above the points that are indicated on the module.
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