Remove Frame 7 Power Module

Follow these steps to remove the power module from the frame 7 enclosure.
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.
  1. Review the product advisories in the Before You Begin section.
  2. Open the enclosure door.
  3. Remove the protective guard. See the Remove Protective Touch Guards section.
  4. Loosen the thumb screw that secures the connection 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 step numbers showing connections cover removed from PowerFlex 755TL and 755TR frame 7 power module
    IMPORTANT: The 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.
    fiber-optic cable bend radius example
  6. Remove the fiber-optic cables from the transceiver in the CTL and PDI (if present) ports on the power interface circuit board and remove the fiber-optic cables from the power module chassis.
    To help avoid damage, don’t bend the fiber-optic cables to a radius less than 50 mm (2 in.).
  7. For line side converter power modules, disconnect the DC fuse wire harness connector P1 from connector J1 on the I/O panel on the power module.
  8. For line side converter power modules, disconnect the 24V DC signal wire harness connector P3 from J3 on the I/O panel on the power module.
  9. Disconnect the 240V AC and optional 24V DC power supply wire harness connector P4 from J4 on the I/O panel on the power module.
    Image with callouts showing wire harness and fiber-optic connections of the PowerFlex 755TL and 755TR frame 7 power module.
  10. Remove the two M12 nuts that secure the top of the DC fuses to the DC bus terminals on the line side converter power module. For bus supplies, remove the DC link/fuses.
  11. For drives only, remove the two M10 nuts that secure the DC link busbars to the DC terminals on the motor side inverter power module and remove the DC link/fuse assembly.
    Image with step numbers showing DC fuse to bus terminal connections between PowerFlex 755TL and 755TR frame 7 power modules.
  12. For the line side converter power module, remove the six M8 x 30 mm torx screws that secure the AC input flexible busbars to the AC input terminals on the power module, and remove the flexible busbars.
    Image with step number showing AC input connections to PowerFlex 755TL and 755TR frame 7 line side power module.
  13. For the motor side inverter module, remove the six M8 x 30 mm torx screws that secure the AC output flexible busbars to the AC output terminals on the power module, and remove the flexible busbars.
    Image with step number showing AC output connections to PowerFlex 755TL and 755TR frame 7 motor side power module.
  14. Remove the two M10 x 20 mm torx screws that secure the upper power module chassis to the module support bracket.
  15. 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.
  16. To remove the module by using the
    PowerFlex®
    750-Series service cart, follow the detailed instructions in the PowerFlex 750-Series Service Cart and DCPC Module Lift Installation 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.
  17. To release the power module, remove the two remaining M10 screws.
  18. Remove the power module from the enclosure.
    Image with step numbers showing bracket screw connections for a PowerFlex 755TL and 755TR frame 7 power module.
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