Murphy MC-900 Series manual 3.1 MC-900 wiring

Figure 4-2.3.1: MC-900 wiring

Hourmeter			Voltmeter		Input
+	–	+		–
					Barrier		MANUAL START
					Terminal
								MODULE
					Blocks
						15	FUSE B+ OUT	OVERCRANK LIGHT OUTPUT
						26	B– TO HOURMETER	OVERSPEED LIGHT OUTPUT
						4	B GROUND	LOW OIL PRESS. LIGHT OUTPUT
						27	MAGNETIC PICKUP	HIGH WATER TEMP. LIGHT O/P
						28	LOW OIL PRESS.		SPARE #1 LIGHT OUTPUT
						4	GROUND		SPARE #2 LIGHT OUTPUT
						29	HIGH WATER TEMP.
						30	SPARE #1 SHUTDOWN INPUT
						31	SPARE #2 SHUTDOWN INPUT		SPARE #3 LIGHT OUTPUT
						32	SPARE #3 SHUTDOWN INPUT		SPARE #4 LIGHT OUTPUT
						33	SPARE #4 SHUTDOWN INPUT
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Output

Barrier

Terminal

Blocks

35

36

37

38

39

40

41

42

43

44

45

46

B+

Battery

Auxiliary Starter

Solenoid

Starter

B+

B– Ground

(FR) Energize to Stop solenoid

(FR) Energize to Run solenoid

Fuel relay N.C. dry contact

Fuel relay Com. dry contact

Fuel relay N.O. dry contact (SDR) Circuit breaker shunt trip

	B+ B–	FUEL RELAY	SHUTDOWN RELAY	OVERSPEED RELAY CRANK SIGNAL	RUN SIGNAL
	J1 A B	A B C D E J2
TB1						TB2
1		3A Fuse				15
4						4
5						16
6						17
7	Fuel	J2		Shut	J2	18
8						19
				Down
	Relay	A		Relay	B
9						20
10		Over				21
11				J2		22
		Speed
12		Relay		C		23
13						24
14						25

Lamp

B+ to aux. starter solenoid Run signal switched B– Shutdown relay N.C. dry contact Shutdown relay COM. dry contact Shutdown relay N.O. dry contact Overspeed relay N.C. dry contact Overspeed relay COM. dry contact Overspeed relay N.O. dry contact

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