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Section 1
General Information
Specifications and Product Data 6-13MN894
Connection Diagrams Continued
NEMA 12 Size 160−840 AMP Combination & Noncombination Bypass
13
12
11
10
9
8
7
6
5
4
3
2
1
L1
L2
L3
GL1
GL2
GL3
GT1
GT2
GT3
T1
T2
T3
19
20
Close
To Run
Start /
Run
Shunt
Trip
Ramp
End
Tach
Input
MTR
PWR
CUR
MON
CT Input
R1
12 8
9
5
R1
CF
X
115VAC
AB
F3
A
F1
A
F2
B
B
R1
13 14
9
10
7
8
64
5
31
2
CT2
T1 T2 T3
To Motor
CB
L1 L2 L3
Line Input
9
10
7
8
64
5
31
2
TB1
TB1
Start
Stop
(Three Wire)
H
O
A
Two Wire Control Device
(Hand - Off - Auto)
LCM
Legend:
BP - BYPASS Contactor.
CB - Shunt trip motor circuit protector or fuse disconnect..
CF - Power cell cooling fan.
CS - Snubber capacitor.
CT1 - LCM current transformer.
CT2,3,4 - Overload current transformer.
F1, F2 - Control transformer fuses.
F3 - Control branch circuit fuse.
LCM - Logic control module - type M.
MOV - Metal oxide varistors.
CF
CF
Enclosure
Fan
CT1
T
L
GL
GT
SA
PC1
SB
SC
RS
Line
Load
S
L1
GL1
GT1
T1
T
L
GL
GT
SA
PC2
SB
SC
RS
Line
Load
S
T
L
GL
GT
SA
PC3
SB
SC
RS
Line
Load
S
PC1/L
PC2/L
PC3/L
PC1/GL
PC2/GL
PC3/GL
PC1/GT
PC2/GT
PC3/GT
PC1/T
PC2/T
PC3/T
Enclosure
Fan
OL - Overload relay (electronic).
PC1,2,3 - SCR power cells.
R1 - Run relay, DPDT.
R2 - Shunt trip relay, DPDT.
RS - Snubber resistor.
S - SCR overtemperature switch.
SCR - Silicon controlled rectifier.
TB1 - Terminal block.
X - Control transformer (control voltage).
OL
96
95
Shunt
Trip
R2 CB
OL
R2
95
97 98
13 14
CT3
CT4
BP
OL
OL
OL
R3 BP
95
13 14
R3
A1 A2
MOV
Caution: Read Note
S1A
S1B
L2
GL2
GT2
T2
S2A
S2B
L3
GL3
GT3
T3
S3A
S3B
16
17
14
15
CT1
MBX140 = 8 Turns
MBX160 = 8 Turns
MBX250 = 4 Turns
MBX420 = 4 Turns
MBX600 = 4 Turns
MBX840 = 4 Turns
4 Turns (3 Loops)
Notes:
Control transformer must be properly connected for line voltage (see transformer nameplate).
Do not apply voltage to LCM terminals 12 and 13. Dry contact type only.
Number of cooling fans depends on the FLA rating.
Tachometer is only required when LCM is used in Tach Feedback mode.
MOVs are connected in parallel for greater energy absorption for control sizes above 420Amp FLA.
Motor circuit protector and this circuit are not provided with the non−combination starters and fuse disconnect
versions.
For factory supplied enclosure fans only.