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MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
STARTER TYPES
CHAPTER 2: INSTALLATION
2.4.11 Wye-delta
Closed
Transition
Starter
This starter type is a reduced voltage starter. When the start button is pressed timing relay
TR is picked up and sealed in. The 1S coil is picked up which in turn picks up the 1M coil
which seals itself in. When timing relay TR times out the 2S coil is picked up which then
drops out the 1S coil. The 2M coil now picks up and the 2S coil is dropped out. The motor is
now running in a delta configuration.
Figure 2-25: Elementary Wye-delta Closed Transition Magnetic Starter
To program the MM3 Motor Manager 3 for wye-delta closed transition starter, set:
S1 CONFIGURATION
ÖØ
STARTER
Ö
STARTER TYPE
: WYE DELTA CLS TRANS
S1 CONFIGURATION
ÖØ
STARTER
ÖØ
CHANGE OVER CURRENT
: 0.1 to 5.0
×
FLC
S1 CONFIGURATION
ÖØ
STARTER
ÖØ
CHANGE OVER TIME
: 1 to 125 sec.
S3 PROCESS
Ö
PROGRAMMABLE INPUTS
Ö
INTERLOCK INPUT 9
: Wye Delta 2S Contact
S3 PROCESS
Ö
PROGRAMMABLE INPUTS
Ö
INTERLOCK INPUT 10
: Wye Delta 1M Contact
S4 CONTROL
ÖØ
AUX 1 RELAY CONFIG
Ö
AUX RELAY 1 FUNCTION
: Wye Delta Cls Trans
The
CHANGE OVER CURRENT
setpoint appears only if either of the wye-delta starter types
have been selected. Before the
CHANGE OVER CURRENT
setpoint comes into effect on a
Wye delta start, a minimum of 25% of the
CHANGE OVER TIME
setpoint must have
expired. After 25% of the time has expired and the average of the three phase currents has
dropped below the
CHANGE OVER CURRENT
value, the transition from wye (contactor A)
to delta (contactor B) will occur. If this setpoint is set to “OFF”, 100% of the
CHANGE OVER
TIME
must expire before the wye to delta transition will occur.
The
CHANGE OVER TIME
setpoint appears only if the wye-delta starter type has been
selected. See the description above for operation.
Start sequence:
1.
Start command received by the MM3 Motor Manager 3.
2.
Close the contactor A relay – this causes the 1S wye contactor to pick up
which connects the motor windings in the wye configuration.
3.
Wait approximately 20 ms.
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 ...