Murphy WIR-97020B manual Typical Wiring with 518PH Tattletale

Typical Wiring with 518PH TATTLETALE®

	518PH	CLOSEDLOOP™ Wiring*
20P-F	20T-F
Pressure	Temperature	Hourmeter
			B+ Tachometer
		+ _

	R	SIG GRD
G NO	NC SW1 SW2 B
**		+ _
PB128S Stop Switch	Jumper*

To Magnetic Sensor, Alternator “Tach” Terminal, or Signal Generator

Voltmeter

Distributor Ignition coil

Fuel Valve

Energized

to Run

Rack Pull Solenoid (RP2300 Series shown)

+ _	+ _
	Battery
Ammeter	B+
ST BAT	Exciter
IGN
ACC	S
Start Switch	B
	Alternator
	Starter

*Jumper is to be removed when connecting a CLOSEDLOOP™ circuit. **Normally Opened terminal is available on the 518APH & 518E models.

Typical Wiring Diagram with 760A and 761APH

20P	20T		760A/761APH
Pressure	Temperature			Hourmeter
			TD			B+ Tachometer
				+	_
		NOTE 1
					SIG	GRD
		G	NO NC S B			To Magnetic Sensor,
					_	Alternator “Tach”
				+
						Terminal, or
PB128S Stop Switch						Signal Generator
				Voltmeter
		R	+	_	+ _
Distributor	Ignition
	Coil	Normally Open			Battery	B+
Flyback		Relay with	Ammeter
		Flyback Diode				Exciter
Diode
			ST BAT
Fuel			IGN
Valve		Energized	ACC		S
			Start Switch		B
		to Run				Alternator
	Flyback
				Starter
Rack Pull	Diode
Solenoid
(RP2300
Series shown)	Flyback	NOTE 1: With terminal “G” grounded, the time delay operates only on start; after the initial
		time delay, the shut-down circuit is operated immediately when SWICHGAGE® contact operates.
	Diode	With terminal “G” not grounded, the time delay operates both on start and stop.
FW MURPHY	CONTROL SYSTEMS & SERVICES DIVISION			COMPUTRONIC CONTROLS, LTD
P.O. Box 470248	P.O. Box 1819			41 - 43 Railway Terrace Nechells
Tulsa, Oklahoma 74147 USA	Rosenberg, Texas 77471 USA			Birmingham B7 5NG UK
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E-mail: sales@fwmurphy.com	E-mail: sales@fwmurphy.com			E-mail: info@computroniccontrols.com
INDUSTRIAL PANEL DIVISION	Web site: www.fwmurphy.com			Web site: www.computroniccontrols.com
Fax: 918.317.4124	FRANK W. MURPHY, LTD			FW MURPHY INSTRUMENTS (HANGZHOU) CO. LTD
E-mail: ipdsales@fwmurphy.com	Church Rd Laverstock			77 23rd Street
MURPHY POWER IGNITION	Salisbury SP1 1QZ UK			Hangzhou Economic & Technological Development Area
	Phone: +44 1722 410055		Fax: +44 1722 410088	Hangzhou, Zhejiang, 310018, China
Web site: www.murphy-pi.com
	E-mail: sales@fwmurphy.co.uk			Phone: +86 571 8788 6060		Fax: +86 571 8684 8878
www.fwmurphy.com
	Web site: www.fwmurphy.co.uk					Printed in U.S.A.

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