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

viii Table of Contents
7000A-UM150F-EN-P – June 2013 7000 “A” Frame
Temperature Sensing ............................................................. 6-21
Symmetrical Gate Commutated Thyristor Replacement ....... 6-23
Silicon Controlled Rectifier and SCR Self-Powered
Gate Driver Board Replacement ..................................... 6-26
Heatsink Replacement ........................................................... 6-29
PowerCage Gasket ................................................................. 6-30
Replacement of PowerCage Gaskets ............................... 6-31
Removal of old Gasket Material ..................................... 6-31
PowerCage Removal ............................................................. 6-32
Snubber Resistors .................................................................. 6-34
Testing Snubber Resistors ............................................... 6-34
Snubber and Sharing Resistor Replacement .......................... 6-35
Sharing Resistors ................................................................... 6-37
Testing Sharing Resistors ................................................ 6-37
SGCT PowerCages ................................................... 6-38
SCR PowerCages ...................................................... 6-39
Replacing Sharing Resistor ............................................. 6-40
Resistance Measurements ............................................... 6-40
Self-Powered Gage Driver Board – SPGDB
Description ...................................................................... 6-41
Board Calibration ............................................................ 6-41
Test Points Description ................................................... 6-41
Terminal/Connections Description ................................. 6-42
Testing Procedure for SCR Self-Powered Gate Driver Board ... 6-43
Fiber Optic Cabling ............................................................... 6-47
Air Pressure Sensor ................................................................ 6-48
Air Pressure Sensor Replacement ................................... 6-48
DC Link and Fan Cabinet Components ................................. 6-49
Output Grounding Network Replacement ....................... 6-50
Ground Filter Component Replacement .......................... 6-51
Filter Capacitors .............................................................. 6-52
Generator Note ................................................................ 6-52
Filter Capacitor Replacement .......................................... 6-53
Testing Filter Capacitors .................................................. 6-54
DC Link Reactor Replacement .............................................. 6-56
Fan Replacement ................................................................... 6-58
DC Link Section .............................................................. 6-58
Safety Notes .................................................................... 6-58
Fan Installation ................................................................ 6-59
Top of Integral Isolation Transformer Section ................ 6-59
Top of Integral Line Reactor/Input Starter Section ......... 6-60
Impeller Maintenance (DC Link/Fan Section) ...................... 6-61
Impeller Removal from Motor Shaft ............................... 6-61
Safety Notes .................................................................... 6-61
Installation of Impeller Assembly onto Motor Shaft ....... 6-62
Impeller Maintenance ........................................................... 6-64
Isolation Transformer Cooling Fan ................................. 6-64
Chapter 6 Component Definition
and Maintenance
(cont.)