Control Power Checks (No Medium Voltage; Final Power Checks Before Restarting - Allen-Bradley PowerFlex 7000 User Manual

E-4 Preventative Maintenance Schedule
Annual Maintenance
(cont.)
7000A-UM151E-EN-P - October 2018

Control Power Checks (No Medium Voltage)

 Apply Control power to the PowerFlex drive, and test power to all
of the vacuum contactors (input, output, and bypass) in the system,
verifying all contactors can close and seal in.
Refer to Publication 1502-UM050_-EN-P for a detailed

description of all contactor maintenance.
 Verify all single-phase cooling fans for operation.
This includes the cooling fans in the AC/DC Power supplies and

the DC/DC converter.
 Verify the proper voltage levels at the CPT (if installed), AC/DC
Power Supplies, DC/DC converter, isolated gate power supply
boards.
Refer to Chapter 4 – Commissioning in Reference Manual

(Publication 7000A-RM001_-EN-P) for appropriate
procedures/voltage levels for the above checks.
 Verify the proper gate pulse patterns using Gate Test Operating
Mode.
If there have been any changes to the system during the outage,

place the drive in System Test Operating Mode and verify all
functional changes.

Final Power Checks before Restarting

 Ensure all cabinets are cleared of tools, and all component
connections are back in place and in the running state.
 Put all equipment in the normal operating mode, and apply medium
voltage.
 If there were any input or output cables removed, verify the input
phasing, and bump the motor for rotation.
 If there were any changes to the motor, input transformer, or
associated cabling, you will have to retune the drive to the new
configuration using Autotuning.
 Save all parameter changes (if any) to NVRAM.
 Run the application up to full speed/full load, or to customer
satisfaction.
 Capture the drive variables while running, in the highest access
level if possible.
7000 "A" Frame