Rockwell Automation PowerFlex 7000

Rockwell Automation Publication 7000-UM202H-EN-P - November 2023 97
Chapter 2 Power Component Definition and Maintenance
Apply a thin bead of Loctite 454 adhesive to the PowerCage module surface in a
zigzag pattern using the original nozzle size. Use the tip to spread the adhesive
around to cover at least 50% of the area. There should be sufficient quantity of
adhesive to remain wet long enough for the gasket to be applied. The adhesive
uses the moisture in the air as it cures. The higher the humidity the faster the
adhesive will cure.
Position the gaskets ensuring the gasket is oriented correctly. Center the
gasket over the opening for the heatsinks with the narrow end positioned
closest to the test points. Apply the porous surface of the gasket to the
PowerCage module. The gasket will bond almost immediately. Apply some
pressure to the gasket for 15…30 seconds.
After all the gaskets have been placed check to see that the gasket has bonded
properly. Repair any loose areas.
Removing the PowerCage Module
1. Ensure there is no power to the equipment.
2. Remove all the components located within the module to avoid any
damage to the components. Consult the required sections to remove
clamping pressure, as well as remove the SGCT or SCR, circuit boards,
and thermal sensor.
3. Remove the M8 bolts (use 13 mm) in the two flanges that connect the
heatsink to the PowerCage module, then remove the heatsink. This
reduces the weight for easier handling.
4. To detach the PowerCage module, remove the bolts on the outer flange.
Carefully lift the module down, placing the forward face down. Do not
over-torque these bolts.
5. See appropriate section for component replacement.
6. Place the bolts on the outer flange in loosely. Torque bolts alternately on
one flange and then the opposite flange to ensure even tightening of the
module. Use the suggested torquing sequence shown in Figure 88
.
IMPORTANT This adhesive will bond anything quickly, including fingers!
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.
ATTENTION: Static charges can destroy or damage the SCR and SCR SPGD
board. Properly ground yourself before removing the replacement SCR and
SCR SPGD board from the protective anti-static bag. Using damaged circuit
boards may also damage related components. Use a grounding wrist strap
for handling sensitive circuit boards.
ATTENTION: Do NOT remove the pivot plate from the PowerCage. The pivot
plate is located on the opposite end of the PowerCage from the clamp head.
If the pivot plate is removed from the PowerCage, it must be replaced in the
original orientation. See Figure 45
through Figure 50 for pivot plate location.
IMPORTANT The module can be heavy. Use two people to extract the module from the
drive.