
Figure 4‐21 Engine Control Connections
12VDC (24VDC)
STARTING
BATTERY
CRANK PILOT RELAY
RUN CIRCUIT
SPEED SENSING
MAGNETIC PICKUP
OIL PRESSURE SENDER
ENGINE TEMPERATURE SENDER
REMOTE EMERGENCY STOP (CLOSE TO STOP)
REMOTE FAULT RESET (CLOSE TO RESET)
- + 10A
GRD
CR
RUN CIRCUIT
(FUEL SOL., GOV.)
GRD
B+
B-
23
24
18
19
MP1
MP2
37
38
13
14
15
16
CRANK
RUN
MEC 20
|
| 1A |
| GENERATOR |
VA |
|
| VA | |
|
| OUTPUT VOLTAGE | ||
|
|
|
| |
VB |
| 1A | VB |
|
|
| (DELETE PHASE VC | ||
|
| 1A |
| |
VC |
| VC | FOR SINGLE PHASE | |
|
| |||
|
| SYSTEMS) | ||
|
|
|
| |
VN |
|
| N |
|
IA | φA |
|
| GENERATOR OUTPUT |
|
|
| ||
IB |
|
|
| CURRENT SENSING |
φB |
|
| TRANSFORMERS | |
|
|
| ||
|
|
| 5 Aac SECONDARY | |
IC |
|
|
| |
φC |
|
| (DELETE PHASE C | |
|
|
| FOR SINGLE PHASE | |
|
|
|
| |
IN |
|
|
| SYSTEMS) |
|
|
| GRD |
|
25 |
|
|
|
|
26 | COMMON FAIL CONTACT | |||
(OPERATES ON AN ALARM OR | ||||
| SHUTDOWN CONDITION) | |||
27 |
|
| (25, 26, 27 Not used in MEC 2) |
28
REMOTE START CONTACT
17
29
PROGRAMMABLE CONTACT #1
DIGITAL FAULT INPUT CONTACTS (MEC 2 =
1
2
3
4
5
6
7
8
30
31
PROGRAMMABLE
32 CONTACT #2
33
34
24 PROGRAMMABLE
35
CONTACT #3
(Not used in MEC 2)
9
10
11
36
22
21
PROGRAMMABLE CONTACT #4
12 |
| 20 |
|
|
|
|
|
|
|
|
|
MN2408 | Operation 4‐33 |