Typical Wiring Tech Sheet for Magnetic Switches …

1 97020B. Typical Wiring tech Sheet for Revised 04-08. Section 25. Magnetic Switches and tattletale Annunciators Typical Wiring Diagram with 117/117PH Magnetic Switch 20P 20T. Pressure Temperature 117/117PH Hourmeter Tachometer + _ B+. SIG GRD. To Magnetic Sensor, C S B Alternator Tach . Terminal, or + _ Signal Generator PB128S Stop Switch Voltmeter + _. + _. Battery Ammeter B+. Distributor Ignition coil Exciter ST BAT. Fuel Valve IGN. ACC S. Energized B. Start Switch to Run Alternator Starter Rack Pull Solenoid (RP2300 Series shown).

2 Typical Wiring Diagram with MS2100 tattletale . 20P 20T. Pressure Temperature MS2100 MS2100. Typical Power Adaptor 6 1 2 3 4 5 6 1 2 3 4 5. G A A S. Spark Plugs Ignition Generator Kill . Wire Ignition Coils 97020B page 1 of 2. Typical Wiring with 518PH tattletale . 518PH CLOSEDLOOP Wiring *. 20P-F 20T-F. Pressure Temperature Hourmeter Tachometer R. + _ B+. SIG GRD. G NO NC SW1 SW2 B. To Magnetic Sensor, ** Alternator Tach . Terminal, or + _ Signal Generator PB128S Stop Switch Jumper*. Voltmeter + _. + _. Distributor Ignition coil Battery Ammeter B+.

3 Fuel Valve Exciter ST BAT. IGN. Energized ACC S. to Run B. Start Switch Alternator Starter Rack Pull Solenoid (RP2300 Series shown). *Jumper is to be removed when connecting a CLOSEDLOOP circuit. **Normally Opened terminal is available on the 518 APH & 518E models. Typical Wiring Diagram with 760A and 761 APH. 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. With terminal G not grounded, the time delay operates both on start and stop.

4 760A/761 APH. 20P 20T. Pressure Temperature Hourmeter TD Tachometer + _ B+. SIG GRD. G NO NC S B. To Magnetic Sensor, Alternator Tach . + _ Terminal, or Signal Generator PB128S Stop Switch Voltmeter R. + _. Distributor Ignition Coil + _. Normally Open Battery Ammeter B+. Relay with Flyback Flyback Diode Exciter Diode ST BAT. Fuel IGN. Valve ACC S. Energized B. to Run Start Switch Alternator Flyback Diode Starter Rack Pull Solenoid (RP2300. Series shown) NOTE : The 760A cannot be adequately protected by a circuit breaker in a dead short condition with a battery Flyback as the power source.

5 The circuit breaker will take a finite amount of time to react, during which time the Diode circuit board of the 760A will be damaged beyond repair. Fuses are the optimal method for protecting the 760A. FW MURPHY FRANK W. MURPHY, LTD FW MURPHY INSTRUMENTS (HANGZHOU) CO. LTD. Box 470248 Church Rd Laverstock 77 23rd Street Tulsa, Oklahoma 74147 USA Salisbury SP1 1QZ UK Hangzhou Economic & Technological Development Area +1 918 317 4100 Fax: +1 918 317 4266 Phone: +44 172 241 0055 Fax: +44 172 241 0088 Hangzhou, Zhejiang 310018 China E-mail: E-mail: Phone: +86 571 8788 6060 Fax: +86 571 8684 8878.

6 INDUSTRIAL PANEL DIVISION Web site: FW MURPHY INTERNATIONAL TRADING (SHANGHAI) CO., LTD. Fax: +1 918 317 4124 COMPUTRONIC CONTROLS, LTD Suite 1784, Tower B, City Center of Shanghai; 100 Zunyi Road E-mail: 41 - 43 Railway Terrace Nechells Shanghai, 200051 China MURPHY POWER IGNITION Birmingham B7 5NG UK Phone: +86 21 6237 2082 Fax: +86 21 6237 2083. Web site: Phone: +44 121 327 8500 Fax: +44 121 327 8501 E-mail: E-mail: CONTROL SYSTEMS & SERVICES DIVISION Web site: Box 1819. Rosenberg, Texas 77471 USA. Phone: +1 281 633 4500 Fax: +1 281 633 4588 www.

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