MEC 20 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM047 Rev 13 05/03/30
88
Thomson Technology
13. CONNECTION
DIAGRAM
G:\ENGINEER\PRODUCTS\MEC20_04.VSD REV 3 02/02/20
1
2
3
4
5
6
7
8
9
10
11
12
17
16
15
14
13
38
37
GRD
CR
MP2
MP1
19
18
24
23
B –
B +
GRD
+
–
12/24Vdc
BATTERY
CRANK PILOT RELAY
RUN CIRCUIT
SPEED SENSING
MAGNETIC PICKUP
OIL PRESSURE SENDER
ENGINE TEMPERATURE
SENDER
REMOTE EMERGENCY STOP
(CLOSE TO INITIATE)
REMOTE FAULT RESET
(CLOSE TO INITIATE)
REMOTE START
CONTACT
DIGITAL FAULT INPUT
CONTACTS #1 TO #12
2
CRANK
RUN
1
1
25
26
27
28
29
30
31
32
33
34
24
35
36
22
21
20
1
1
1
1
1
PROGRAMMABLE
CONTACT #4
PROGRAMMABLE
CONTACT #3
PROGRAMMABLE
CONTACT #2
PROGRAMMABLE
CONTACT #1
COMMON FAIL CONTACT
(OPERATES ON AN ALARM OR
SHUTDOWN CONDITION)
IN
IC
IB
IA
VN
VC
VB
VA
VC
VB
VA
1A
1A
1A
N
GRD
GENERATOR OUTPUT
CURRENT SENSING
TRANSFORMERS
5 Aac SECONDARY
(DELETE PHASE C
FOR SINGLE PHASE
SYSTEMS)
ØA
ØB
ØC
10A
GENERATOR
OUTPUT VOLTAGE
120Vac TO 600Vac
3 PHASE OR SINGLE
PHASE
(DELETE PHASE VC
FOR SINGLE PHASE
SYSTEMS)
MEC 20
RUN CIRCUIT
(FUEL SOL., GOV.)
GRD
NOTES:
CONTACTS RATED MAXIMUM 10A/240Vac, 8A/24Vdc RESISTIVE
LOGIC IS SOFTWARE PROGRAMMABLE FOR OPEN OR CLOSE ON FAIL
GENERATOR SUPPLY MUST UTILIZE A SOLIDLY GROUNDED NEUTRAL SYSTEM – REFER TO
INSTRUCTION MANUAL FOR ALTERNATE CONNECTIONS
ENGINE MOUNTED COMPONENTS
"GRD" CONNECTION TO BE MADE TO COMMON CHASSIS/ENCLOSURE GROUND BOND SYSTEM
1
2
3
4
5
5
4
4
4
4
4
4
3
Summary of Contents for MEC 20
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