
CHAPTER 2: INSTALLATION
STARTER TYPES
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
2–25
Figure 2-20: Autotransformer Open Transition Three Winding
2.4.8
Autotransformer
Closed
Transition
Starter
This starter type is a reduced voltage starter. When the start button is pressed, timing relay
TR is picked up and seals itself in. The 1S coil is also picked up which in turn picks up the 2S
coil. The 2S coil seals itself in. The 1S contacts configure the autotransformer windings into
an open delta for two winding or wye for three winding autotransformers. The 2S contacts
bring the autotransformer on line, providing reduced voltage to the motor. When timing
relay TR times out the 1S coil drops out and then R is picked up. When the R contacts pick
up then 2S is dropped out. The motor now has full voltage applied.
GE POWER MANAGEMENT
Summary of Contents for MM3
Page 8: ...vi MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL TABLE OF CONTENTS ...
Page 18: ...1 10 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL TECHNICAL SPECIFICATIONS CHAPTER 1 INTRODUCTION ...
Page 80: ...4 18 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL CHASSIS MOUNT UNITS CHAPTER 4 SOFTWARE ...
Page 124: ...5 44 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL S7 TESTING CHAPTER 5 SETPOINTS ...
Page 198: ...8 54 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL MODBUS MEMORY MAP CHAPTER 8 COMMUNICATIONS ...
Page 220: ...10 14 MM3 MOTOR MANAGER 3 INSTRUCTION MANUAL GE MULTILIN WARRANTY CHAPTER 10 MISCELLANEOUS ...