Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) - Manual (Page 179)

Rockwell Automation Publication 7000-UM151E-EN-P - January 2013 179
Component Definition and Maintenance Chapter 3
– This includes main cooling fan, power devices, heatsinks, circuit boards,
insulators, cables, capacitors, resistors, current transformers, potential
transformers, fuses, wiring, etc.; Causes could be corrosion, excessive
temperature, or contamination.
– Verify that torque on heatsink bolts (electrical connections to bullet
assemblies) is within specifications (13.5 N-m).
– Clean all contaminated components using a vacuum cleaner (DO NOT
use a blower), and wipe clean components where appropriate.
– NOTE: An important component to check for contamination is the
heatsink. The fine grooves in the aluminum heatsinks can capture dust
and debris.
• Carry out the physical inspection and verification for the proper operation
of the contactor/isolator interlocks, and door interlocks.
– Carry out the physical inspection and verification for the proper
operation of the key interlocks.
– Physical verification of the additional cooling fans mounted in the AC
Line Reactor cabinet, Harmonic Filter cabinet for mounting and
connections.
– Carry out the cleaning of the fans and ensure that the ventilation
passages are not blocked and the impellers are freely rotating without
any obstruction.
– Carry out the insulation meggering of the drive, motor, isolation
transformer/line reactor, and the associated cabling.
– Refer to User Manual, Appendix D – Meggering, for meggering
procedure.
– Check clamp head indicator washers for proper clamp pressure, and
adjust as necessary.
– Refer to User Manual, Chapter 5 – Component Definition and
Maintenance for details on proper clamp pressure.
Control Power Checks (No Medium Voltage)
• Apply 3 Phase Control power to the PF7000 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 the Commissioning Guide for appropriate procedures/voltage
levels for the above checks.
• Verify the proper gate pulse patterns using Gate Test Operating Mode.