UENR5871
May 2016
A1
229-M112
A2
R2
REFERENCE
THIS SHEET
229-A332
Y911-A42
Y911-G116
A1
26
229-A117
A2
R5
W1 (WHITE)
C1 (WHITE)
BATT-
RTD#1-C
RTD#2-C
13
REFERENCE
THIS SHEET
229-A332
4
RTD#1-GND
RTD#2-GND
14
RO6-C
5
RTD#1-SHIELD
RTD#2-SHIELD
15
21
RTD#3-A
RTD#4-A
31
22
RTD#3-B
RTD#4-B
32
23
RTD#3-C
RTD#4-C
33
24
RTD#3-GND
RTD#4-GND
34
25
RTD#3-SHIELD
RTD#4-SHIELD
35
6
RTD#5-A
RTD#6-A
16
7
RTD#5-B
RTD#6-B
17
8
RTD#5-C
RTD#6-C
18
9
RTD#5-GND
RTD#6-GND
19
10
RTD#5-SHIELD
RTD#6-SHIELD
20
26
RTD#7-A
RTD#8-A
36
27
RTD#7-B
RTD#8-B
37
W1 (WHITE)
NOTE A
12 3 4 5 6 7
C1 (WHITE)
GENERATOR RUNNING
OPTION
W1 (WHITE)
229-A332
C1 (WHITE)
C1 (WHITE)
E
F709-A80
DI5
F407-A51
F407-H8
EFU12-H3
D
R1 (RED)
INTERNALLY NORMALLY CLOSED
SWITCH AUTOMATICALLY CLEARS
CURRENT FAULT ALARM
EFU12-H3
GEN REAR
BEARING TEMP
RESET
2
W1 (WHITE)
C1 (WHITE)
28
RTD#7-C
29
30
RTD#8-C
38
RTD#7-GND
RTD#8-GND
39
RTD#7-SHIELD
RTD#8-SHIELD
40
R1 (RED)
GEN FRONT
BEARING TEMP
D
D
C1 (WHITE)
OPTIONAL RTD MODULE
101-J20
1
4
229-J18
229-J22
C
C
101-J1
MO BREAKER
SHUNT TRIP
OPTION
RO8
C NC
C
C
1
4
101-J1
RO7
C NC
NOTE A
RTD MODULE
8-PIN PLUG
155-2264
J-C5
101-J19
D
8
229-J23
AC OPTIONS
6
4
2
DISCRETE
I/O MODULE
8 PIN PLUG
155-2264
J-C4
A
229-J2
FUEL CONTROL (DEDICATED)
ENGINE RELAY (DEDICATED)
BREAKER TRIP RELAY OPTION
RELAY 05
(R04)
(R05)
RELAY 06
RELAY 07
RELAY 08
DIGITAL OUTPUT #1
DIGITAL OUTPUT #2
DIGITAL INPUT E-STOP
DIGITAL INPUT START
DIGITAL INPUT #1
DIGITAL INPUT #2
DIGITAL INPUT #3
DIGITAL INPUT #4
DIGITAL INPUT #5
DIGITAL INPUT #6
ANALOG INPUT #1
ANALOG INPUT #2
ANALOG INPUT #3
(R06)
(R07)
(R08)
(D01)
(D02)
(E-STOP)
(START)
(DI1)
(DI2)
(DI3)
(DI4)
(DI5)
(DI6)
(AI1)
(AI2)
(AI3)
GENERATOR RUNNING RELAY OPTION
SPARE
SPARE
DISABLE AUX POWER SUPPLY
SPARE
E-STOP (DEDICATED)
REMOTE START (DEDICATED)
COOLANT LEVEL (DEDICATED)
SPARE
SPARE
SPARE
GROUND FAULT/EFU RELAY OPTION
SPARE
SPARE
SPARE
ENGINE OIL TEMP (DEDICATED)
+
STNC-M4
MN
A
229-M6
AUX1A
1
AUX1A-M1
2
229-M2
3
G487-M3
AUX1B
AUX1C
MECHANICALLY OPERATED
BREAKER OPTION
REFERENCE
IDLE RATED (DEDICATED)
BATTERY
CHARGER
OPTION
101-M5
SPARE
SPACE
HEATER
OPTION
R5
11 12
477-7114
VOCA
VOCB
FSO
DS50
AIM
V/PF
1
NOTE D
NOTE E
A
A
L2
52G
CUSTOMER
SUPPLIED
240 VAC
RELAY 04
XJ51-UP
DK61-UP
TGC1-UP
BLG1-UP
DJN1-UP
9EP1-UP
TFT1-UP
BCW1-UP
RTY1-UP
1EZ1-UP
4BZ1-UP
DIGITAL VOLT
REGULATOR
OPTION
(R01)
(R02)
(R03)
RELAY 03
3
B
3412
L1
RELAY 01
RELAY 02
5
BATT
ESDIS
7
BATT
B
EMCP4.2 I/O DEFAULT CONFIGURATION
ABB T-7
JWH
B
B
JWH
477-7114
C
SERVICE TOOL CAN2
9-PIN RECEPTACLE
265-4123
J-C1
FRES
B
DESCRIPTION
3412C Generator Set
Electrical System
W1 (WHITE)
SHORE POWER
DISTRIBUTION BLOCK
OPTION
1 RESET
SHORE POWER
DISTRIBUTION RELAY
OPTION
OPTION
GROUND FAULT RELAY OPTION
RO8
C NO
C1 (WHITE)
GROUND FAULT RELAY
RO7
C NO
W1 (WHITE)
RO6
C NO
C1 (WHITE)
RO5
C NO
W1 (WHITE)
229-H1
A2
JACKET WATER
HEATER
OPTION]
7
EFU
RO4
C NO
5
891011121314
GEN WINDING TEMP
PHASE C2
RO3
C NO
NOTE D
R1 (RED)
RO2
C NO
R1 (RED)
GEN WINDING TEMP
PHASE B2
RO1
C NO
GROUND FAULT RELAY OPTION
OPTION
A1
E
14
EFU
SHORE POWER RELAY
101-H9
E
13
36
SUPPLIED
DI5
SUPPLIED CUSTOMER
DO-1
CUSTOMER SUPPLIED
69
SUPPLIED CUSTOMER
SPDR
F709-E4
A2
CUSTOMER SUPPLIED
A1
CUSTOMER
101-E3
DO-1
CUSTOMER SUPPLIED
E
GEN WINDING TEMP
PHASE A2
W1 (WHITE)
AUX1A
GEN WINDING TEMP
PHASE C1
REFERENCE
SHEET#6
R1 (RED)
477-7114
R1 (RED)
F
A
THIS SHEET
229-A332
AC/DC DINRAIL LAYOUT
FOR NOTES SEE SHEET 1
SHEET 12 OF 13
DC SCHEMATIC - SHEET 4 OF 4
FOR NOTES SEE SHEET 1
SHEET 9 OF 13
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
3-PIN REC
134-2540
TERM. RES.
3-PIN REC
134-2540
TERM. RES.
A
Y794-J9
Y794-J14
Y794-J5
Y794-J17
Y794-J25
Y794-J17
GN
GN
GN
GN
GN
GN
Y795-J10
Y795-J12
Y795-J4
Y795-J15
Y795-J29
Y795-J15
YL
YL
Y794-J30
GN
Y794-J33
Y795-J34
GN
120
OHMS
B
C
Y796-J11
Y796-J13
CU
CU
YL
YL
YL
YL
Y795-J31
YL
Y796-J3
Y796-J16
Y796-J27
Y796-J16
Y796-J32
Y796-J35
CU
CU
CU
CU
CU
CU
Y794-AC60
GN
Y795-AC64
YL
70-PIN PLUG
160-7689
A-C4
CAN2+
REMOTE
ANNUNCIATOR
RA-C1
BATT+
BTRY+
C
2 BTRY+
1
Symbols
OPTIONAL RS485
REMOTE
ANNUNCIATOR
Y796-AC62
CU
Y794-J25
G CAN+
GN
Y795-J29
F CAN-
YL
Y796-J27
C CAN SH
CU
Y794-J30
2
GN
BTRY(RD)
BATT-
(BK)
BATT-
RS485-B
RS485-A
(GY)
RS485-RF
2
1 BTRY-
2
T
RS485-B
(RD)
RS485-B
(RD)
4
Pressure
Symbol
(RD)
4 RS485B(+)
(BK)
5 RS485A(-)
(GY)
3 RS485A-REF
YL
Y796-J32
5
CU
3
(BK)
RS485-A
USE BELDEN 9842
5
E
(GN)
RS485-REF
E
5
6
(BK)
B
RS485-SH
A
(RD)
YL
(GY)
Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The
circle indicates that the component has screw terminals and a wire can be disconnected from it.
120
OHMS
Y796-J7
63
Circuit Breaker
Symbol
RESISTOR
RS485-SH
Y795-J8
C
CAN2 SH
Flow
Symbol
Fuse: A component in an electrical circuit that will open the circuit if too much current flows
through it.
E
RS485-REF
GN
64
Level
Symbol
Symbols and Definitions
(BK)
RS485-A
TERMINATING
CAN2-
Temperature
Symbol
RS485-SH
Y795-J31
3
Y794-J6
62
F
373-9469
B
3-PIN PLUG
174-0502
J-C3
DISCRETE
I/O MODULE
8 PIN PLUG
155-2265
J-C4
RTD MODULE
8-PIN PLUG
155-2265
J-C5
SERVICE TOOL CAN2
9-PIN RECEPTACLE
265-4123
J-C1
E
REMOTE ANNUNCIATOR ENCLOSURE
OPTIONAL REMOTE RS485 ANNUNCIATOR
F
BATT+
3-PIN PLUG
174-0502
J-C2
EMCP 4.2
YL
F
Printed in U.S.A.
Harness And Wire Electrical Schematic Symbols
A
120
OHMS
F
© 2016 Caterpillar, All Rights Reserved
CU
Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.).
No circle indicates that the wire cannot be disconnected from the component.
NOTE F
CAN 2
Ground (Wired): This indicates that the component is connected to a grounded wire. The
grounded wire is fastened to the machine.
D
D
D
D
Ground (Case): This indicates that the component does not have a wire connected to ground.
It is grounded by being fastened to the machine.
OPTIONAL MODBUS
POSSIBLE WIRING CONFIGURATION WITH RS485 DEVICE (TYPICAL)
RS-485
DB-9 CONNECTOR
GENERATOR CONTROLS
ENCLOSURE TERMINALS
CAN 1
MODBUS+
9
TxD/RxD+
MODBUS-
5
TxD/RxD-
MOD-REF
1
COMMON
POSSIBLE WIRING CONFIGURATION WITH RS485 TO RS-232 CONVERTOR
40 PIN
9X-1339
A-C8
ENGINE ECM
(TYPICAL)
C
3-PIN REC
134-2540
TERM. RES.
CAN1+
CAN1+
17
M756-A7
M755-A113
GN
GN
M756-A6
M756-A6
M756-A4
GN
GN
GN
CAN1-
34
M756-A114
YL
YL
GENERATOR CONTROLS
ENCLOSURE TERMINALS
C
A
120
OHMS
CAN1M755-A3
C
F712-MA203
M755-A-11
M755-A9
YL
YL
YL
M757-A16
M757-A17
M757-A15
CU
CU
CU
B
Reed Switch: A switch whose contacts are controlled by a magnet. A magnet closes the
contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.
RS-485 TO
RS-232 CONNECTOR
T
TD B (+)
MODBUS+
RD B (+)
MODBUS-
TD A (-)
MOD-REF
RD A (-)
Sender: A component that is used with a temperature or pressure gauge. The sender
measures the temperature or pressure. Its resistance changes to give an indication to
the gauge of the temperature or pressure.
C
Relay (Magnetic Switch): A relay is an electrical component that is activated by electricity.
It has a coil that makes an electromagnet when current flows through it. The
electromagnet can open or close the switch part of the relay.
COMMON
CAN1 SH
CAN1 SHIELD
M757-A2
42
M757-A115
CU
CU
GN
M755-A10
YL
B
M757-A16
3412 ENGINE WIRING
CU
GENERATOR CONTROLS
ENCLOSURE TERMINALS
3-PIN PLUG
174-0502
A-C5
CAN1
SERVICE TOOL
9-PIN RECEPTACLE
265-4123
A-C1
M756-A5
C
TD(A)
MODBUS+
MODBUS-
TD(B)
MOD-REF
GND
G CAN+
GND
USE BELDEN 9841
F CAN-
B
C CAN SH
Solenoid: A solenoid is an electrical component that is activated by electricity. It has a
coil that makes an electromagnet when current flows through it. The electromagnet
can open or close a valve or move a piece of metal that can do work.
RS-485 TO
RS-232 CONNECTOR
B
DB-9
HOOKUP TO
PC/COMPUTER
+12V
Magnetic Latch Solenoid: A magnetic latch solenoid is an electrical component that is
activated by electricity and held latched by a permanent magnet. It has two coils (latch and unlatch)
that make electromagnet when current flows through them. It also has an internal switch that places
the latch coil circuit open at the time the coil latches.
B
270-0475
FOR MULTIPOINT NETWORK TERMINATE WITH 150 OHM RESISTOR AT THE ENDS OF THE NETWORK
Harness and Wire Symbols
70-PIN PLUG
160-7689
A-C4
M756-A1
GN
F712-EM53
YL
A
Wire,
Cable,
or
Harness
Assembly Identification: Includes
Harness Identification Letters and
Harness Connector Serialization
Codes (see sample).
EMCP 4.2
50
CAN1+
34
CAN1-
42
CU
CAN1 SH
A
A
5
L-C12
3E-5179
1
Part Number: for Connector Plug
Harness Connector Serialization Code:
The "C" stands for "Connector" and the
number indicates which connector in the
harness (C1, C2, C3, ...).
Part Number: for Connector Receptacle
2
4
3
2
Plug
CUSTOMER INTERCONNECTS
FOR NOTES SEE SHEET 1
SHEET 13 OF 13
COMMUNICATIONS - CAN1, CAN2
FOR NOTES SEE SHEET 1
SHEET 10 OF 13
6
L-C12
3E-5179
AG-C4
111-7898
A
M757-A2
Harness Identification Letter(s):
(A, B, C, ..., AA, AB, AC, ...)
6
1
5
4
3
2
1
Receptacle
Pin or Socket Number
1
2
Deutsch connector: Typical representation
of a Deutsch connector. The plug contains all
sockets and the receptacle contains all pins.
1
2
Sure-Seal connector: Typical representation
of a Sure-Seal connector. The plug and receptacle
contain both pins and sockets.
5A
Fuse (5 Amps)
9X-1123
Component
Part Number
325-AG135 PK-14
6
5
4
3
2
1
F
F
32 AMPS
L1
CB1-C7
OUTPUTS
(14-6 AWG)
L1
L1
1
CB1-B12
LEFT INPUT
(8-2 AWG)
L1
RIGHT INPUT
(10-6 AWG)
L1
F-JWH
2
CB1-C1
3
4
CONTACTOR
340-0302
L1-C9
CB1-B2
5
6
CONTACTOR
340-0302
H1-B5
CB1-D2
1
2
CONTACTOR
340-0302
L1-D5
4 AMPS
L1
1 F-ALHTR 2
6 AMPS
CB1-D7
1 F-BATTC 2
20 AMPS
CB3-E14
1 F-CONTA 2
CB4-E15
11
12
SPDR1
101-E5
H1
N725-B10
H1-B5
5A BATT CHGR
332-8816
A1
CONT
A2
HEATER-SPACE
4P-1801
CB3-E11
BATTERY POSITIVE MAIN
CONNECT AT
L1
300W
120VAC
48 OHMS
REFERENCE
THIS SHEET
200
200-D11
L1
ISOLATION SWITCH OR
H2
BATTERY POS POST
A
L1
+
N726-B8
JACKET WATER
HEATER
240 VAC SINGLE PHASE
6kW (TOTAL)
ELEMENT GP-JACKET
WATER HEATER
228-7233
101-D9
H3
E
PWR1 LOAD BLOCK
N727-B52
B
-
NOTE E
200-D10
BATTERY NEGATIVE MAIN
CONNECT AT
L2
CB3-E11
ISOLATION SWITCH OR
OUTPUTS
(14-6 AWG)
REFERENCE
THIS SHEET
200
6 AMPS
L2
CB2-D8
1 F-BATTC 2
N1-D6
200-D11
HEATER-SPACE
4P-1801
BATTERY NEG POST
E
300W
120VAC
48 OHMS
L2
L2
L2
LEFT INPUT
(8-2 AWG)
L2
RIGHT INPUT
(10-6 AWG)
L2
4 AMPS
CB2-B11
1 F-ALHTR 2
H4
N728-B53
32 AMPS
L2
CB2-C8
D
H4-B6
H4-B6
1
F-JWH
2
L2-C10
D
L2
PWR2 LOAD BLOCK
OPTIONAL GENERATOR
SPACE HEATER - 590 FRAME
OPTIONAL GENERATOR
BATTERY CHARGER
OPTIONAL
JACKET WATER HEATER
REFERENCE
SHEET #6
200
C
C
B
B
REFERENCE
THIS SHEET
200
A
A
AC OPTIONS - SHORE POWER
FOR NOTES SEE SHEET 1
SHEET 11 OF 13
6
5
4
3
2
1
Harness identification code:
This example indicates wire group 325,
wire 135 in harness "AG".
Wire Gauge
Wire Color
36 Page, (Dimensions: 48 inches x 35 inches)
RO6-NO
F
UENR5871
3
F
GEN WINDING TEMP
PHASE B1
477-7114
12
RS-485
ANNUNCIATOR
OPTION
RTD#2-B
COMMON ALARM
RELAY
OPTION
RTD#1-B
R5
E565-M11
BATT-
GENERATOR
RUNNING RELAY
OPTION
27
2
R1 (RED)
CMNALM
E565-A49
33
RO6
C NO
Y910-A43
11
CMNALM
RO4-NO
RO4-C
101-A310
RTD#2-A
CMNALM
41
RTD#1-A
NOTE B,C
R4
GEN WINDING TEMP
PHASE A1
BREAKER OPTION
RO4
C NO
101-A56
101-A309
1
MECHANICALLY OPERATED
1
AUX1C
EMCP 4.2
2
CR
70-PIN PLUG
160-7689
A-C4
101
3
AUX1B
R1 (RED)
REFERENCE
SHEET #6
4
DC OPTIONS
40-PIN PLUG
9X-0141
RTD MODULE
5
R2
40-PIN PLUG
9X-0141
F
6
1
GROUND FAULT
RELAY
OPTION
2
MODBUS RTU
(TO SCADA)
3
-
4
+
5
SPARE RELAY
OUTPUTS RATED
2A RESISTIVE
6
14
13
6
12
5
4
11
3
10
2
8
9
1
6
7
5
4
6
3
5
2
4
1
3
6
5
2
4
1
3
2
1
TO LOAD
N
GND
F
SHEET #
NOTE C: SEE SHEET "CUSTOMER INTERCONNECTS" FOR CONNECTION TO REMOTE DEVICES
NOTE D: WHEN THE ENGINE IS RUNNING, THE EMCP ENERGIZES THE SPDR RELAYS TO DISABLE AC SHORE POWER
A
B
C
3412 ENGINE WIRING
DESCRIPTION
F
1
NOTES & SHEET INDEX
2
ABBREVIATIONS & SYMBOLS
F
3
EMCP 4.2 CONTROL PANEL LAYOUT
4
AC SCHEMATIC - SHEET 1 OF 2
5
AC SCHEMATIC - SHEET 2 OF 2
6
DC SCHEMATIC - SHEET 1 OF 4
7
DC SCHEMATIC - SHEET 2 OF 4
8
DC SCHEMATIC - SHEET 3 OF 4
F
OPTIONAL
CIRCUIT
BREAKER
3 OR 4
POLE
52G
NOTE E: AMPACITY OF SHORE POWER CUSTOMER WIRING SHOULD BE DETERMINED BY OPTIONS INSTALLED.
NOTE F: USE THE EXISTING RESISTOR ON THE DC TERMINAL BLOCK
NOTE G: REMOVE TERMINAL BLOCK JUMPERS WITH ENCLOSURE
101
REFERENCE
SHEET#6
70-PIN PLUG
160-7689
A-C4
229-A332
FUEL CONTROL
EMCP 4.2
NOTE G
ESTOPC
F408-A89
E486-A35
13
GEN VOLTAGE A
14
ENGINE SHUTDOWN
6
FUEL SHUTOFF
1
SHUTOFF SOLENOID
F408-A87
F408-A87
L12
L11
ESTOPE
E487-A34
1 F-VSL2 2
11
GEN VOLTAGE B
9
GEN VOLTAGE C
7
GEN AC VOLTAGE
F409-A127
F409-A127
2.0 AMPS
E
E
E488-A33
1 F-VSL3 2
F409-A32
BATT-
ESTOPA
E
GENV-N
F409-A154
E
ESTOP
F405-A90
F405-A81
70
REFERENCE
229-A86
L32
E
THIS SHEET
229-A332
L31
DI1
C527-A67
54
C527-A129
C527-A129
Y908-A118
Y908-A118
P737-A121
P737-A121
229-A119
229-A119
30
COOLANT LEVEL SWITCH
7
IDLE RATED
26
OIL TEMP SIGNAL
27
OIL TEMP GROUND
COMMUNICATIONS - CAN1, CAN2
229-A307
11
AC OPTIONS - SHORE POWER
12
RO5-NO
RO5
C
NO
41
Y909-A48
33
IDLE RATED
AI3+
AC/DC DIN RAIL LAYOUT
13
Y908-A55
RO5-C
F448-A70
31
X1
IA GEN IN
AI3+
30
AI3-
29
P737-A46
AI3-
CT1
CUSTOMER INTERCONNECTS
F453-A170
X2
F450-A61
X1
47
IB GEN IN
57
IC GEN IN
39
I AC COMMON
CT2
REFERENCE
F453-A171
X2
F453-A172
D
D
Y905-A50
35
229-A332
RO3-C
CT3
X2
229-A45
RO3-NO
RO3
C
NO
THIS SHEET
F452-A70
X1
I
F407-A251
NOTE G
2.0 AMPS
DI1
10
R11
ESTOPD
1 F-VSL1 2
E487-A152
J
F406-A85
R12
F406-A85
E486-A151
F
ESTOPB
Y903-A115
Y903-A62
48
ENGINE ECM
ESPB
RO2-NO
RO2
C
NO
101-A71
RO2-C
40-PIN PLUG
9X-1339
A-C8
EMCP 4.2
2.0 AMPS
DC SCHEMATIC - SHEET 4 OF 4
9
REFERENCE
SHEET #6
58
E488-A153
E
F
101-A308
70-PIN PLUG
160-7689
A-C4
Y904-A57
43
F453-A54
D
D
D
D
RO7-NO
RO7
C
NO
Y913-A31
2
RO7-NC
RO7
C
NC
Y913-A37
15
RELAY OUTPUTS
FOR CUSTOMER USE
RATED 2A RESISTIVE
I
RO7-C
Y912-A41
25
RO8-NO
RO8
C
NO
GROUND FAULT RELAY
OPTION
Y917-A30
1
RO8-NC
RO8
C
NC
REFERENCE
THIS SHEET
229-A332
Y916-A36
14
317-9505
RO8-C
X1
EFU8-H4
8
CT1
9
CT2
Y915-A40
24
EFU
START
EFU9-H5
C
C
REMOTE INITIATE
X2
C
C
C
45
DI4
44
SUPPLIED
DI3
CUSTOMER
SUPPLIED
DI4
SUPPLIED
CUSTOMER
DI6
CUSTOMER
SUPPLIED
G488-A58
G490-A44
28
SUPPLIED
VR6
F454-P9
6
PHASE B GEN (CT1)
5a
PHASE B GEN (CT2)
X1
C
G487-A59
NOTE A
DI6
DI2
C528-A66
53
DI3
CUSTOMER
F406-A68
55
DI2
DROOP CT
X2
F453-P10
GROUND
BAR
B
N
A
B
4-PIN PLUG
155-2272
C1 (PMG)
1
2
3
GE
4
C
A
GND
N702
N703
PMG
T2
N704
B
H
T5
T4
T6
N702
T1
T3
X2
Z1
N704
3
SHEET #6
REFERENCE
200
6-PIN REC
155-2573
P-C1
200-A400
1
2
3
4
4-PIN REC
3E-3376
A-C10
R
IE ATO
R
NE
GE
1
2
3
4
N703
LINK C
2
4-PIN PLUG
155-2272
C1 (IE)
X1
234-P8
VOLTS ADJUST
P
NE MG
RA
TO
R
C
LINK A
233-P7
1
B
B
2
3
4
7
LINK E
482-7853
N704-P5
{
MIDPOINTS
N702-P4
N703-P6
N704-A147
N702-A145
N705-A173
N706-A174
56
AI1-
46
AI1+
P731-A69
AI1-
P985-A60
AI2+
V/RAISE
6a
9
V/LOWER
20
22
24
ALTERNATOR
ALTERNATOR
ALTERNATOR
B
AI2+
38
AI2-
37
P732-A53
AI2-
B
B
P986-A52
EMCP4.2 I/O DEFAULT CONFIGURATION
N704-P12
N702-P11
N706-P1
N705-P2
200-P3
28
30
26
F+
F-
PMG B
PMG C
PMG A
F+
F-
G
GND
A
A
A
N705
+
200
FUEL CONTROL (DEDICATED)
ENGINE RELAY (DEDICATED)
BREAKER TRIP RELAY OPTION
RELAY 05
(R04)
(R05)
IDLE RATED (DEDICATED)
RELAY 06
RELAY 07
RELAY 08
DIGITAL OUTPUT #1
DIGITAL OUTPUT #2
DIGITAL INPUT E-STOP
DIGITAL INPUT START
DIGITAL INPUT #1
DIGITAL INPUT #2
DIGITAL INPUT #3
DIGITAL INPUT #4
DIGITAL INPUT #5
DIGITAL INPUT #6
ANALOG INPUT #1
ANALOG INPUT #2
ANALOG INPUT #3
(R06)
(R07)
(R08)
(D01)
(D02)
(E-STOP)
(START)
(DI1)
(DI2)
(DI3)
(DI4)
(DI5)
(DI6)
(AI1)
(AI2)
(AI3)
GENERATOR RUNNING RELAY OPTION
SPARE
SPARE
DISABLE AUX POWER SUPPLY
SPARE
E-STOP (DEDICATED)
REMOTE START (DEDICATED)
COOLANT LEVEL (DEDICATED)
SPARE
SPARE
SPARE
GROUND FAULT/EFU RELAY OPTION
SPARE
SPARE
SPARE
ENGINE OIL TEMP (DEDICATED)
RELAY 04
6-PIN REC
3E-3382
A-C12
2-PIN PLUG
155-2269
C2 (EXCITER)
REFERENCE
SHEET #6
200-AC70
(R01)
(R02)
(R03)
RELAY 03
A
A
H
3412
DESCRIPTION
RELAY 01
RELAY 02
N703-P13
6
5
4
3
2
1
N703-A146
AI1+
Z2
452-7630
SPARE
A
1
EXCITER
N706
2
6
5
4
3
2
1
6
5
4
3
2
1
AC SCHEMATIC - SHEET 1 OF 2
FOR NOTES SEE SHEET 1
SHEET 4 OF 13
2-PIN REC
3E-3364
A-C11
NOTES & SHEET INDEX
SHEET 1 OF 13
DC SCHEMATIC - SHEET 2 OF 4
FOR NOTES SEE SHEET 1
SHEET 7 OF 13
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
TO LOAD
N
GND
A
B
C
EMCP 4.2
F
E
52G
GENERATOR CIRCUIT BREAKER
AC
ALTERNATING CURRENT
ADEM
ADVANCED DIESEL ENGINE MANAGEMENT
AI
ANALOG INPUT
AUX
AUXILIARY
BATT-
BATTERY NEGATIVE
BATT+
BATTERY POSITIVE
C
COMMON
CAN
CONTROLLER AREA NETWORK
CB
CIRCUIT BREAKER
CDL
F
CONTROL RELAY
CS
CONTROL SIGNAL
CT
CURRENT TRANSFORMER
CW
CLOCKWISE
DC
DIRECT CURRENT
DI
DIGITAL INPUT
DIO
DIGITAL INPUT/OUTPUT
DO
DIGITAL OUTPUT
ECM
ELECTRONIC CONTROL MODULE
RED
WHITE
ORANGE
YL
YELLOW
RELAY CONTACT (NORMALLY OPEN)
RELAY CONTACT (NORMALLY CLOSED)
CL
CLEAR
BK
BLACK
GY
GRAY
CU
COPPER
BR
BROWN
GN
GREEN
BU
BLUE
GN YL
GREEN/YELLOW
VI
VIOLET
BK WH
BLACK/WHITE
120
OHMS
TERMINATING
RESISTOR
F
F
52G
70-PIN PLUG
160-7689
A-C4
A
+
LAMP
BATTERY
CHARGER
B
ECMR
ELECTRONIC CONTROL MODULE RELAY
EM
EXCITATION MODULE
EMCP
ELECTRONIC MODULAR CONTROL PANEL
ESPB
EMERGENCY STOP PUSH BUTTON
F
FUSE
70-PIN PLUG
160-7689
A-C4
G
F
NOTE B
EMCP 4.2
MODBUS+
5
MODBUS-
3
XX AMPS
1
FX
2
2.0 AMPS
FUSE
MODBUS REF
4
E486-A151
E486-A35
1 F-VSL1 2
13
GEN VOLTAGE A
11
GEN VOLTAGE B
9
GEN VOLTAGE C
7
GEN AC VOLTAGE
F
MODBUS+
R951-A20
MODBUS- MODBUS COMMUNICATIONS
FOR CUSTOMER USE
USE BELDEN 9841
R952-A21
-
MODREF
R953-A22
2.0 AMPS
DIODE
E487-A152
E487-A34
1 F-VSL2 2
1
R
G
Y
GREEN
YELLOW
A
AMBER
W
WHITE
HEATING ELEMENT
RED
RELAY COIL
2
MULTI-PIN
3
CONNECTOR
2.0 AMPS
E488-A153
E
E
E488-A33
1 F-VSL3 2
E
GENV-N
F409-A32
F409-A154
4
P
O
ORANGE
B
BLUE
RECEPTACLE
MPU+
66
MPU-
67
MPU+
G404-A30
F448-A70
SWITCH CONTACT (NORMALLY OPENED)
G404
MP1
1
31
X1
MPU-
G405-A31
IA GEN IN
BK-18
G405
MP2
G406-A32
2
2-PIN PLUG
155-2269
MP-C1
G406-MP3
CT1
F450-A61
X1
SWITCH CONTACT (NORMALLY CLOSED)
3412 ENGINE WIRING
MPU SH
F453-A170
X2
STANDARD WIRING
CUSTOMER SUPPLIED WIRING
E
EMCP SPD
SENSOR
4P-5820
WH-18
PLUG
EMERGENCY STOP PUSH BUTTON
LINE STYLES
2-PIN REC
3E-3364
MP-C1
E
PUMP MOTOR
47
IB GEN IN
57
IC GEN IN
39
I AC COMMON
CT2
AN-C2
RS-485
174-0502
F453-A171
X2
F452-A70
TOGGLE SWITCH
D
F
OPTIONAL
CIRCUIT
BREAKER
3 OR 4
POLE
GROUND
LAMP COLOR
CAT DATA LINK
CR
RD
WH
OR
SYMBOLS
A
G
WIRE COLOR
B
ABBREVIATIONS
C
36 Page, (Dimensions: 48 inches x 35 inches)
UENR5871
J
NOTE A: SEE LEBE0006 TO PROGRAM EMCP 4.2 INPUTS AND OUTPUTS
NOTE B: SEE LEBE0010 FOR MODBUS INFORMATION
X1
CT3
SHIELDED CABLE
D
20A
F453-A172
X2
D
G407-AN11
F453-A54
D
A
D
G408-AN14
CIRCUIT BREAKER (2 POLE)
B
G409-AN17
GENERATOR
GND
GROUND
IE
INTERNAL EXCITATION
L
LAMP
LS
LAMP SWITCH
LSM
LOAD SHARE MODULE
D
RS-485
RES. 1
134-2540
F
C
TERMINAL BOARD POINT
GEN
120
OHMS
A380-AN19
TWISTED PAIR
PIN
C
LV
LOW VOLTAGE
MPU
MAGNETIC PICKUP
N
NEUTRAL
NC
NORMALLY CLOSED
SOCKET
POTENTIOMETER
C
CIRCUIT BREAK
C
F454-R7
X1
WIRE CONNECTION
NFPA
NATIONAL FIRE PROTECTION AGENCY
NO
NORMALLY OPEN
OPT
OPTIONAL
P
PUMP
PMG
PERMANENT MAGNET GENERATOR
POT
POTENTIOMETER
C
CDVR
1
PHASE B GEN (CT1)
2
3
4
5
6
7
8
9
10
11
12
PHASE B GEN (CT2)
+/- 10VDC INPUT (B)
ALARM OUTPUT DRIVER
FAULT SHUTDOWN DRIVER
+/- 10VDC (A)
18-30V CTRL PWR INPUT (B-)
18-30V CTRL PWR INPUT (B+)
DRIVER SUPPLY (50)
GEN VOLTAGE SENSING -C
GEN VOLTAGE SENSING -B
GEN VOLTAGE SENSING -A
X2
B
N714-R9
CIRCUITS NOT CONNECTED
ALM
N752-R10
FSD
J904-R11
VDC-A
N713-R12
CIRCUIT CONNECTED
VDC-B
C988-R13
VDC-B
C987-R14
DS-50
J905-R15
2-WIRE RTD
COMPONENT CALLOUT
GROUND
BAR
E488-R16
E488-R16
E487-R17
E487-R17
E486-R18
E486-R18
E
482-7853
POWER SUPPLY
PT
POTENTIAL TRANSFOMER
PWM
PULSE WIDTH MODULATION
PWR
POWER
RES
RESISTOR
RO
RELAY OUTPUT
RTD
RESISTANCE TEMPERATURE DETECTOR
RTN
RETURN
SPD
SPEED
SPDR
SHORE POWER DISCONNECT RELAY
TEMPERATURE SWITCH
(NORMALLY CLOSED)
B
B
N
A
B
A
N702
T2
N703
PMG
N704
B
CURRENT TRANSFORMER
P
NE MG
RA
TO
R
C
T4
+
T5
4-PIN PLUG
155-2272
C1 (IE)
X1
T6
EXCITER COIL
N702
T3
X2
Z1
1
2
3
4
N703
N704
SHUNT TRIP
TR
TRIP RELAY
V
VOLTS
SHEET #6
REFERENCE
200
A380-AN10
200-A400
1
2
3
4
4-PIN REC
3E-3376
A-C10
R
TO
IE A
R
E
EN
G
N703-A146
N704-A147
N702-A145
N705-A173
N706-A174
CONTACT SENSE RAISE
CONTACT SENSE COMMON
CONTACT SENSE EXCITATION DISABLE
6-PIN PLUG
234-1856
R-C4
6-PIN REC
155-2573
P-C1
200-R6
6
5
4
3
2
1
N703-R5
N704-R4
N702-R3
N705-R2
N706-R1
CONTACT SENSE FAULT RESET
CONTACT SENSE VAR/RF ENABLE
1
2
3
4
5
6
7
8
9
M756-R19
CAN1+
M755-R20
CAN1-
M757-R21
CAN1 SH
B
M716-R22
ES-DIS
M715-R23
FRES
M717-R24
V/PF
B
A
A
200-AC70
5
RS-485 "-"
6
RS-485 REF
A380-AN20
REFERENCE
SHEET#6
101
101-AN2
REFERENCE
SHEET#6
229-A332
229-AN1
1 BATT+
B
2 BATT-
RS-485 "+"
49
RS-485 "-"
59
RS-485 REF
17
G407-AN13
G407-AN5
(BLK)
RS485A
G408-AN6
G408-AN16
RS485B
(RD)
G409-AN19
G409-AN4
RS485R
(WHT)
A
OPTIONAL
REMOTE ANNUNCIATOR
FOR CUSTOMER USE
USE BELDEN 9842
RS485S
A380-AN21
N705
FUEL CONTROL (DEDICATED)
ENGINE RELAY (DEDICATED)
(R04)
(R05)
BREAKER TRIP RELAY OPTION
RELAY 05
RELAY 06
RELAY 07
RELAY 08
DIGITAL OUTPUT #1
DIGITAL OUTPUT #2
DIGITAL INPUT E-STOP
DIGITAL INPUT START
DIGITAL INPUT #1
DIGITAL INPUT #2
DIGITAL INPUT #3
DIGITAL INPUT #4
DIGITAL INPUT #5
DIGITAL INPUT #6
ANALOG INPUT #1
ANALOG INPUT #2
ANALOG INPUT #3
(R06)
(R07)
(R08)
(D01)
(D02)
(E-STOP)
(START)
(DI1)
(DI2)
(DI3)
(DI4)
(DI5)
(DI6)
(AI1)
(AI2)
(AI3)
GENERATOR RUNNING RELAY OPTION
SPARE
SPARE
DISABLE AUX POWER SUPPLY
SPARE
E-STOP (DEDICATED)
REMOTE START (DEDICATED)
COOLANT LEVEL (DEDICATED)
SPARE
SPARE
SPARE
GROUND FAULT/EFU RELAY OPTION
SPARE
SPARE
SPARE
ENGINE OIL TEMP (DEDICATED)
RELAY 04
POWER INPUT (PMG B)
POWER INPUT (PMG C)
POWER INPUT (PMG A)
F+
F-
A380-AN3
+
(R01)
(R02)
(R03)
RELAY 03
A
OPTIONAL DIGITAL VOLTAGE REGULATOR
E
3412
DESCRIPTION
GND
6
2
3
1
5
4
2-PIN PLUG
155-2269
C2 (EXCITER)
REFERENCE
SHEET #6
200
C
EMCP4.2 I/O DEFAULT CONFIGURATION
452-7630
A
G409-AN18
RS-485 "+"
RELAY 01
RELAY 02
6-PIN REC
3E-3382
A-C12
Z2
G408-AN15
4
9-PIN PLUG
234-1857
R-C3
CANBUS - SHIELD
CONTACT SENSE LOWER
4-PIN PLUG
155-2272
C1 (PMG)
1
2
3
GE
4
C
GND
G407-AN12
G409-AN9
CANBUS - CAN1-
T1
STRP
G407-AN7
G408-AN8
F455-R8
VDC-B
CANBUS - CAN1+
PS
C
DROOP CT
3-WIRE RTD
OR
8-PIN PLUG
155-2264
AN-C1
12-PIN PLUG
234-1858
R-C2
SPARE
IDLE RATED (DEDICATED)
A
1
EXCITER
N706
2
ABBREVIATIONS & SYMBOLS
FOR NOTES SEE SHEET 1
SHEET 2 OF 13
AC SCHEMATIC - SHEET 2 OF 2
FOR NOTES SEE SHEET 1
SHEET 5 OF 13
2-PIN REC
3E-3364
A-C11
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
D
229-SW1
229-A456
REFERENCE
THIS SHEET
229-A134
229-A134
F
BATT-
CB1
+
6T-3645
60A
2
101-A301
229-A332
GND
REFERENCE
THIS SHEET
229-A332
40-PIN PLUG
9X-1339
A-C8
202-A305
ALT
229-A137
B
2
1
ENGINE ECM
19
BATT-
M
101-A19-RD
E
3
4
F
1
E
5
+24 VDC
101-A23
F
6
D
DISCONNECT
SWITCH
7N-0718
F
DC SCHEMATIC - SHEET 3 OF 4
FOR NOTES SEE SHEET 1
SHEET 8 OF 13
STRTR
1
237-1962
E
E
450-3941
9X-8124
F3 FUSE
20 AMPS
101-A306
1
F3
2
C214-A302
C214-ST7
C215-A116
SIMMS 1
S
G
B
M
3
**OPTIONAL**
F701-SB2
C
CR
101-A139
DM-582
14
F701-A164
F701-ST6
11
STRTR
2
229-ST5
D
D
C
229-SR1
SIMMS1 COIL
CR RELAY
D
237-1962
**OPTIONAL**
229-SB1
229-A134
REFERENCE
THIS SHEET
101
SIMMS2 COIL
BATT- SIMMS
BATT+
101-A252
101-A600
13
BATT+
15
BATT+
D
GROUND BAR
202-GD1
C214-SB3
C
C
C
CB2
200-8577
4
101-A303
6
CB3
200-8577
101-A304
B
EMCP 4.2
2
EMCP 4.2
B
3
4
B
ANNUNCIATOR #1 (OPTIONAL-CUSTOM)
REFERENCE
THIS SHEET
101
REFERENCE
THIS SHEET
229-A332
REFERENCE
THIS SHEET
200
15 AMPS
101-A259
20A
1
F1
2
101-A320
101-A39
101-A65
B
G
C
5
EMCP 4.2 PANEL
REFERENCE
THIS SHEET
200
C215-SB4
S
70-PIN PLUG
160-7689
A-C4
1
SIMMS 2
REFERENCE
THIS SHEET
229-A134
REFERENCE
THIS SHEET
101
101-A601
15 AMPS
101-A155
20A
1
F2
REFERENCE
THIS SHEET
101
REFERENCE
THIS SHEET
229-A332
VOLTAGE ADJUST (STANDARD VR6)
2
BATT+
101-A108
101-A311
A2
BATT+
52
BATT+
REFERENCE
THIS SHEET
101
BATT+
229-A117
18
101-A74
61
RO1
C
NO
B
CR
A1
F701-A88
F701-A64
EMCP4.2 I/O DEFAULT CONFIGURATION
51
RO1-NO
RELAY 01
RELAY 02
RELAY 04
6
EMERGENCY STOP PUSH BUTTON
RELAY 05
SERVICE TOOL CONNECTOR #1
(CAN1: ADEM, EMCP)
REFERENCE
THIS SHEET
229-A332
A
A
229-A78
BATT-
REFERENCE
THIS SHEET
200
A
65
BATT-
60
BATT-
REFERENCE
SHEET#7,8,9
101
REFERENCE
SHEET#7,8,9
229-A332
REFERENCE
SHEET#4,5,11
200
229-A300
229-A73
200-A453
3412
DESCRIPTION
CRANK RELAY
ENGINE CRANK RELAY
RELAY 03
5
GND
(R01)
(R02)
(R03)
STARTER MOTOR (DEDICATED)
FUEL CONTROL (DEDICATED)
(R04)
(R05)
BREAKER TRIP RELAY OPTION
(R06)
RELAY 06
(R07)
RELAY 07
RELAY 08
(R08)
DIGITAL OUTPUT #1
(D01)
DIGITAL OUTPUT #2
(D02)
DIGITAL INPUT E-STOP (E-STOP)
DIGITAL INPUT START (START)
(DI1)
DIGITAL INPUT #1
(DI2)
DIGITAL INPUT #2
(DI3)
DIGITAL INPUT #3
(DI4)
DIGITAL INPUT #4
(DI5)
DIGITAL INPUT #5
(DI6)
DIGITAL INPUT #6
ANALOG INPUT #1
(AI1)
ANALOG INPUT #2
(AI2)
ANALOG INPUT #3
(AI3)
SPARE
IDLE RATED (DEDICATED)
GENERATOR RUNNING RELAY OPTION
SPARE
SPARE
DISABLE AUX POWER SUPPLY
SPARE
E-STOP (DEDICATED)
REMOTE START (DEDICATED)
COOLANT LEVEL (DEDICATED)
SPARE
SPARE
SPARE
GROUND FAULT/EFU RELAY OPTION
SPARE
SPARE
SPARE
ENGINE OIL TEMP (DEDICATED)
EMCP4.2 CONTROL PANEL LAYOUT
FOR NOTES SEE SHEET 1
SHEET 3 OF 13
6
5
3
4
2
1
B
RO1-C
A
DC SCHEMATIC - SHEET 1 OF 4
FOR NOTES SEE SHEET 1
SHEET 6 OF 13
6
5
4
3
2
1
A
A
THIS SCHEMATIC IS FOR THE 3412C GENERATOR SET ELECTRICAL SYSTEM
MEDIA NUMBER: UENR5871
SCHEMATIC PART NUMBER: 494-0996, CHANGE: 00, VERSION: Components are shown installed on a fully operable generator set in a non powered state.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.
14
13
12
11
10
9
8
7
6
5
4
3
2
1