GE MM300 - Autotransformer Open Transition Starter

2–36 MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
STARTER TYPES CHAPTER 2: INSTALLATION
NOTE
NOTE:
Ensure soft starter is located before contactor.
Autotransformer open transition starter
Figure 2-40: Autotransformer open transition starter typical wiring - IO_C (expansion
module in slot "E")
A
B
C
MOTOR
R
Stator Thermistor
Field Stop
Core Balance CT
RRR
1S
1S
Interlock
R
I
A
I
B
I
C
RS485 Serial Link
Ground at one point
MM300
Low Voltage
Motor
Manager
D2
D1
D8
D7
D6
D5
D4
D3
C
T
M
o
d
u
l
e
CT2
CT3
G/F
CT1
C1
C2
C3
C4
C5
C6
C7
C8
I/O Module- Type C
C9
C10
C11
C12
C13
C14
IN1 IN2 IN3 IN 4 IN5
IN6
Com
Relay 1
Relay 2
LN
+ -
Com
+
CPU
-
R
I
Surge G d
Core
Balance
Thermi stor
RS485
PSU
N
L
GEMultilin
G
n
Gd
n
2S 2S2S
1S
1S
AUX VT
E1 E2 E3
Relay 1
E4 E5 E6
Relay 2
E7 E8 E9
Relay 3
E10
E11
E12
Relay 4
E13 E14
Not
Used
Expansion I/O Module - Type D
R 2S
Only for
2S-1 S
sequence
2S
1S
Field Start
2S
1S
Only for 1S-2S
sequence
RRR
2S 2S2S
1S1S
Two winding
Transformer option
Basic
853848A1.CDR