Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 9)

Table of Contents vii
7000 “B” Frame 7000-UM150I-EN-P – June 2013
Chapter 5 Functional Description
Introduction .............................................................................. 5-1
Description of Operation ......................................................... 5-2
Speed Command ...................................................................... 5-3
Speed Reference ..................................................................... 5-4
Speed Control ......................................................................... 5-6
Flux Control ............................................................................. 5-8
Flux Control for Synchronous Motor .................................... 5-10
Current Control ...................................................................... 5-12
Line Converter Feedback ....................................................... 5-14
Machine Converter Feedback ................................................ 5-15
Motor Model .......................................................................... 5-16
Line/Machine Converter Protection ....................................... 5-18
Power Semiconductor Diagnostics ........................................ 5-19
Off Line Detection of Failed SCRs/SGCTs .................... 5-20
Line Converter .......................................................... 5-20
Machine Converter ................................................... 5-22
On-line Detection of Failed SCRs/SGCTs ...................... 5-23
Test Modes ............................................................................. 5-24
Flying Start (Induction Motor) .............................................. 5-26
Tachometer/Encoder Option .................................................. 5-28
Synchronous Transfer ............................................................ 5-29
Transfer to Bypass ........................................................... 5-31
Transfer to Drive ............................................................. 5-34
Analog Outputs ...................................................................... 5-35
Chapter 6 Component Definition
Control/Cabling Cabinet Components ..................................... 6-1
And Maintenance
Cabling Cabinet for 6-pulse/PWM Rectifier ........................... 6-2
AC Line Reactor Cabinet with Connection Cabinet ................ 6-3
Voltage-Sensing Assembly ...................................................... 6-4
Voltage-Sensing Assembly Replacement ................................ 6-5
Transient Suppression Network – TSN ................................... 6-6
MOV Suppressor ............................................................... 6-6
MOV Fuse ......................................................................... 6-7
Transient Suppression Network Fuse Replacement ................ 6-8
Metal-Oxide Varistor Replacement ....................................... 6-10
Output Grounding Network Capacitor Replacement ............ 6-10
Ground Filter Component Replacement ................................ 6-12
Hall Effect Current Sensor Replacement ............................... 6-13
Current Transformer Replacement ........................................ 6-14
Filter Capacitor Cabinet ......................................................... 6-15
Filter Capacitors .............................................................. 6-15
Filter Capacitor Replacement .......................................... 6-16
Converter Cabinet Components ............................................. 6-19
Converter Cabinet ................................................................... 6-20
PowerCage™ ......................................................................... 6-20
SGCT and Snubber Circuit ................................................... 6-23
Uniform Clamping Pressure .................................................. 6-24