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MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
STARTER TYPES
CHAPTER 2: INSTALLATION
Start directly to high speed (motor stopped,
HIGH SPEED START BLOCK
enabled) sequence:
1.
Start B command received by the MM3 Motor Manager 3 (serial, switch input
or faceplate).
2.
No response to start B commands.
Low to high speed transition sequence:
1.
Start B command is received (serial, switch input or faceplate).
2.
Open contactor A output relay.
3.
Close and maintain Contactor B relay – the motor is now in high speed.
High to low speed transition sequence:
1.
Start A command is received (serial, switch input or faceplate).
2.
Open contactor B output relay.
3.
Wait for the programmed transfer time.
4.
Close and maintain contactor A.
Stop/trip sequence:
1.
Stop command received by the MM3 Motor Manager 3 or a trip occurs.
2.
Open the currently closed contactor output relay.
There are many different configurations for the TWO SPEED starter type. Three of the more
popular ones are illustrated here: two-speed one winding constant or variable torque, two-
speed one winding constant horsepower, and two-speed two winding.
When the power to the MM3 Motor Manager 3 is interrupted, all MM3 Motor Manager 3
output relays de-energize, causing them to open and stop the motor. The MM3 Motor
Manager 3 can only be wired for fail-safe operation.
If feedback is not received from the L or H contacts to the Contactor A or B Status N.O.
input within one second of closing Contactor A relay, an OPEN CONTROL CIRCUIT alarm will
occur. This will cause Contactor A and B output relays to open.
If feedback remains at the Contactor A or B Status N.O. input more than one second after
opening the Contactor A or B output relays, a WELDED CONTACTOR alarm will occur.
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 ...