A hoist, straps, and J-hooks with a lockable clasp capable of supporting the maximum module weight are recommended. The frame 7L power module maximum weight is 55 kg (122 lb).
To safely lift the frame 7L power module, you must source a lift bracket designed for the module. For lift bracket details and installation on the frame 7L power module, see the PowerFlex 755TM Power and Filter Modules Unpacking and Lifting Instructions, 750-IN104.
Replace the power module with the appropriate catalog number: 20-750-MI5-C650D650. The power module catalog number is included on the nameplate that is on the front of the module as shown in this illustration.
Frame 7L Power Module Nameplate Location
Follow these steps to remove a power module from the enclosure.
Turn off the liquid cooling loop flow and remove any pressure from the system.
IMPORTANT:
Be prepared to capture any liquid that remains in the power module and cooling loop hoses.
By using a backup wrench on the drive fitting, loosen the coolant hose swivel nut fitting by either of the following methods:
Hex flats from wrench resistance method (recommended): one hex flat from wrench resistance.
Torque wrench: 103…109 N•m (or 76…81 lb•ft).
Loosen the thumbscrew that secures the connection cover to the front of the power module.
Use the screw to lift the connections cover up and off the power module chassis.
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.
Without bending the cable to a radius less than 50 mm (2 in.), remove the fiber-optic cables from the transceiver in the CTL and PDI (if used) ports on the power interface circuit board.
IMPORTANT:
The end of the transceiver that connects to the inside of the fiber port contains dielectric grease. Do not touch the end of the transceiver.
Carefully remove the cable from the power module chassis and, observing the minimum bend radius, secure the fiber-optic cable in a protected location.
For the CTL and PDI (if used) fiber-optic ports on the power layer interface board, open the transceiver latch and pull the transceiver out of the connector on the board.
TIP:
If the latch is obstructed and you cannot use your fingers to open it, use a small, screwdriver, or other long, narrow tool to open the latch.
IMPORTANT:
For line side converter power module replacement, retain the PDI fiber-optic transceiver for reuse. When the power module is removed to replace the power layer interface circuit board only, retain the CTL and PDI (if used) fiber-optic transceivers for reuse. If present, do not remove the protective cover from the PDI fiber-optic port.
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.
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.
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.
Loosen but do not remove the two M12 nuts that secure each of the DC fuses to the DC link bus bars and power module terminals.
Remove the two M10 nuts that secure each of the DC link bus bars to the DC terminals on the power modules.
Remove the two M12 nuts that secure the bottom of each of the fuses to the DC terminals on the power modules and remove the DC link/fuse assemblies.
For the line side converter power module, remove the six M8 x 30 mm Torx screws that secure the AC input flexible bus bars to the AC input terminals on the power module, and remove the flexible bus bars.
For the motor side inverter module, remove the six M8 x 30 mm Torx screws that secure the AC output flexible bus bars to the AC output terminals on the power module, and remove the flexible bus bars.
IMPORTANT:
To safely lift the frame 7L power module, you must source a lift bracket designed for the module. For lift bracket details and installation on the power module, see the PowerFlex 755TM Power and Filter Modules Unpacking and Lifting Instructions, publication 750-IN104.
Secure the lift bracket to the power module.
Secure the lift equipment to the lift bracket with slight tension on the lift straps.
Remove the two M8 x 20 mm Torx screws that secure the power module chassis to the module support beam.
Remove the two M10 x 20 mm nuts that secure the lower power module chassis to the module support bracket studs.
To release the power module from the support bracket and enclosure, remove the two remaining, upper M10 x 20 mm hexagonal nuts and remove the module from the enclosure.
Install the power module into the enclosure in the reverse order of removal.
IMPORTANT:
For motor side inverter power modules, do not remove the protective covers from connector J3 on the I/O panel and the fiber-optic port PDI on the power layer interface circuit board. Retain protective covers for power and LCL filter modules for reuse. Install protective covers on connectors when a module is removed and stored.
Remove the protective covers from the CTL and PDI (if used) fiber-optic ports on the power layer interface circuit board.
TIP:
This illustration represents a fiber-optic transceiver port on an example circuit board only.
Remove the new transceiver supplied with the kit from the packing materials.
Remove the protective covers from the transceiver.
Without bending the cable to a radius less than 50 mm (2 in.), fully insert the fiber-optic cable into the transceiver.
IMPORTANT:
The end of the transceiver that connects to the inside of the fiber port contains dielectric grease. Do not touch the end of the transceiver.
Insert the transceiver and fiber-optic cable into the port on the board, until you hear an audible ‘click.’
