Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 369)

Component Definition and Maintenance 6-25
7000 “C” Frame 7000L-UM300I-EN-P – June 2013
Checking Clamping Pressure
Periodically, the clamping force in the PowerCage should be
inspected. Ensure there is no power to the equipment.
A T T E N T I O N A T T E N T I O N To prevent electrical shock, ensure the main
power has been disconnected 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.
Clamp Bar
Calibration Nut - DO NOT ADJUST Indicating Washer
Adjusting Nut
Disc Springs
Pressure Pad
Figure 6.19 – Clamp Head Illustration
If proper force (as designated on the clamp head block) is applied to
the clamping assembly, the indicating washer should just be able to
rotate with fingertip touch. The disc should not rotate freely. Some
force will need to be applied with your fingertips.
Clamping Pressure Adjustment
1. Ensure that all power to the drive is off.
2. Do not loosen the adjustment nut completely.
3. Tighten with a 21-mm (13/16-inch) open-ended wrench on the
adjusting nut (upward motion) until the indicating washer can be
turned by fingers with some resistance. IT SHOULD NOT SPIN
FREELY
.