
2–30
MM3 MOTOR MANAGER 3 – INSTRUCTION MANUAL
STARTER TYPES
CHAPTER 2: INSTALLATION
1.
Stop command is received by the MM3 Motor Manager 3 or a trip occurs.
2.
Open contactors A and B output relays.
If feedback is not received from the Contactor A and B Status N.O. inputs within one second
of closing contactor A and B output relays, an open control circuit alarm will occur. This will
cause contactor A and B output relays to open.
If feedback remains at 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.
2.4.10 Wye-delta
Open
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.
To program the MM3 Motor Manager 3 for wye-delta open transition starter, set:
S1 CONFIGURATION
ÖØ
STARTER
Ö
STARTER TYPE
: WYE DELTA OPN 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
ÖØ
INTERLOCK INPUT 9
: 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 when
STARTER TYPE
is selected as “WYE
DELTA OPN TRANS” or “WYE DELTA CLS TRANS”. Before the
CHANGE OVER CURRENT
setpoint comes into effect on a wye-delta start, a minimum of 25% of the 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
setpoint, 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
STARTER TYPE
is selected as “WYE DELTA
OPN TRANS” or “WYE DELTA CLS TRANS”. See description above for operation.
Start sequence:
1.
Start command received by the MM3 Motor Manager 3 (serial, switch input or
faceplate).
2.
Close Contactor A output relay – the motor is now in a wye configuration.
3.
Close auxiliary output relay 1M contact.
4.
Maintain the 1S contactor until
CHANGE OVER CURRENT
or
CHANGE OVER
TIME
initiates a transition from wye to delta. See
CHANGE OVER CURRENT
and
CHANGE OVER TIME
descriptions above for more detail.
5.
Open Contactor A output relay – change over delay 20 ms wye to delta.
6.
Close and maintain contactor B output relay – the motor is now in a delta
configuration.
Stop/trip sequence:
1.
Stop command received by the MM3 Motor Manager 3 or a trip occurs.
2.
Open contactor B output relay.
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 ...