Murphy ASM170 Engine Controls

  • Specifications


    Power Input: 6 to 28 VDC.

    Power Consumption Standby: <1 mA.

    Operating Temperature: -40 to 185 °F (-40 to +85 °C).

    Inputs: Ground or positive inputs for high temperature, low oil pressure, High/Low Level, Auxiliary/Remote Stop sensors.

    Lamp Test: When unit is powered up in Manual or Auto, the LED’s light for 1 second as a test.

    Outputs: 5A smart FET for cranking and multifunction output. 10A smart FET for Fuel Valve (Energized to Run) output. All 3 supply battery “+”. 125 mA transistor for common failure, engine run, and auxiliary output. (Sink to battery “–”)

    Crank Attempts: Selectable for 3, 5, 10, or 255.

    Crank/Rest Cycle Timing: Field adjustable 1 to 30 seconds.

    Multifunction Output: Field programmable to one of the following options: Glowplug, Cooldown, Warmup/Cooldown, Warmup, Air gate – Overspeed Only, Air gate – Always, Choke, or Auxiliary Run output.

    Shutdown Lockout Time Delay: Field adjustable 1 to 300 seconds. Locks out low oil pressure, high temperature, and loss of speed shutdowns on start-up.

    Crank Disconnect Speed Setting: From 13 to 2500 Hz.

    Overspeed Trip Point Setting: From 13 to 8500 Hz.

    Speed Sensing Input: 1.5VAC RMS to 140 VAC RMS.

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FW Murphy Service Network

Palmer Johnson's six-location factory-authorized service center network features:

  • Factory-trained technicians
  • Field service
  • Onsite troubleshooting and diagnostics
  • Unit removal and installation

For FW Murphy service, call 1-800-341-4334.

Learn more

Madison, WI

Service Center

Service: (608) 834-5206

1835 Haynes Dr
Sun Prairie, WI 53590


Dallas, TX

Service Center

Service: (817) 505-2430

608 112th St
Arlington, TX 76011


Denver, CO

Service Dealer

Service: (720) 724-0033

5151 E 56th Ave
Commerce City, CO 80022


Kansas City, KS

Service Center

Service: (913) 202-6944

15360 South Mahaffie St
Olathe, KS 66062


Los Angeles, CA

Service Center

Service: (562) 356-1590

12020 Bloomfield Ave
Santa Fe Springs, CA 90670


Oklahoma City, OK


Sales: (800) 341-4334

Oklahoma City, OK 73128


Phoenix, AZ

Service Dealer

Service: (602) 253-0214

2401 S. 19th Street
Phoenix, AZ 85034


San Francisco, CA

Service Dealer

Service: (510) 342-2212

1930 W Winton Ave #14
Hayward, CA 94545


Seattle - Mining & Equipment, WA

Service Center

Service: (253) 518-6050

22221 70th Ave S
Kent, WA 98032


St. Louis, MO

Service Center

Service: (636) 203-9811

578 Rudder Rd
Fenton, MO 63026


Philadelphia, PA

Service Dealer

Service: (215) 822-8300

159 Discovery Dr
Colmar, PA 18915


Fort Myers, FL

Service Dealer

Service: (239) 693-7477

4821 Waycross Road
Fort Myers, FL


Odessa, TX

Service Center

Service: (432) 287-1015

12706 W County Rd 100
Odessa, TX 79765


Vancouver, British Columbia

Service Center

Service: (604) 879-6731

6741 Cariboo Rd Unit 205
Burnaby, British Columbia V3N 4A3


Edmonton, Alberta

Service Center

Service: (780) 434-9578

3804 53rd Ave NW
Edmonton, Alberta T6B 3N7


Seattle - Marine, WA

Service Center

Service: (425)251-3434

18547 E Valley Hwy
Kent, WA 98032

Map of Palmer Johnson Power Systems locations