Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 10)

viii Table of Contents
7000-UM150I-EN-P – June 2013 7000 “B” Frame
Checking Clamping Pressure ................................................ 6-25
Clamping Pressure Adjustment ...................................... 6-25
Temperature Sensing ............................................................. 6-26
Symmetrical Gate Commutated Thyristor Replacement ....... 6-28
Silicon Controlled Rectifier and SCR Self-Powered
Gate Driver Board Replacement ..................................... 6-31
Heatsink Replacement ........................................................... 6-34
PowerCage Gasket ................................................................. 6-36
Replacement of PowerCage Gaskets ............................... 6-36
Removal of old Gasket Material ..................................... 6-36
PowerCage Removal ............................................................. 6-37
Snubber Resistors .................................................................. 6-39
Testing Snubber Resistors ............................................... 6-39
Snubber and Sharing Resistor Replacement .......................... 6-40
Sharing Resistors ................................................................... 6-42
Testing Sharing Resistors ................................................ 6-42
SGCT PowerCages ................................................... 6-43
Replacing Sharing Resistor ............................................. 6-44
SCR PowerCages ...................................................... 6-44
Resistance Measurements ............................................... 6-45
Self-Powered Gate Driver Board – SPGDB .......................... 6-46
Description ...................................................................... 6-46
Board Calibration ............................................................ 6-46
Test Points Description ................................................... 6-46
Terminal/Connections Description ................................. 6-47
Testing Procedure for SCR Self-Powered Gate Driver Board ... 6-48
Equipment Needed ......................................................... 6-48
Procedure ........................................................................ 6-48
Fiber Optic Cabling ............................................................... 6-52
Air Pressure Sensor ................................................................ 6-53
Air Pressure Sensor Replacement ................................... 6-53
DC Link and Fan Cabinet Components ................................. 6-54
DC Link Reactor .................................................................... 6-55
Fan Removal and Replacement ............................................. 6-57
Safety Notes .................................................................... 6-57
Fan Installation ................................................................ 6-58
Impeller Maintenance ............................................................ 6-58
Impeller Removal from Motor Shaft ............................... 6-58
Safety Notes .................................................................... 6-58
Installation of Impeller Assembly onto Motor Shaft ....... 6-59
Inlet Ring Removal and Replacement ................................... 6-61
Safety Notes .................................................................... 6-61
Replacement of Air Filters ..................................................... 6-62
Procedure ......................................................................... 6-62
Control Power Components ................................................... 6-65
Ride-Through .................................................................. 6-65
AC/DC Power Supply ............................................................ 6-68
Description ...................................................................... 6-68
Location ................................................................................. 6-69
Chapter 6 Component Definition
and Maintenance
(cont.)