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Murphy MURPHYMATIC MC-900 Series Installation And Operating Manual

Manual generator engine control system
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MC-9142N
Revised 12-00
Section 40
(
00-02-0202)
SERIES MC-900 MURPHYMATIC
®
MANUAL GENERATOR
ENGINE CONTROL SYSTEM
DESIGN, INSTALLATION
AND OPERATING MANUAL

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Summary of Contents for Murphy MURPHYMATIC MC-900 Series

  • Page 1 MC-9142N Revised 12-00 Section 40 00-02-0202) SERIES MC-900 MURPHYMATIC ® MANUAL GENERATOR ENGINE CONTROL SYSTEM DESIGN, INSTALLATION AND OPERATING MANUAL...

  • Page 2: Table Of Contents

    Section 1: Introduction 1-1 System ... 1-2 Models ... 1-3 Purpose ... 1-4 Definitions ... 1-5 How To Use This Manual ... Section 2: Specifications 2-1 Enclosure Type ... 2-2 Power Requirements ... 2-3 Input Ratings ... 2-4 Output Ratings ... 2-5 Field Wiring Connections ...

  • Page 3: Section 1: Introduction

    2-1.1 The MC-900 Series enclosure is designed to be mounted in a standard electrical enclosure for indoor use. 2-1.2 The MC-900 Series shares the same enclosure as the A- 900 automatic start controller so they can be used interchangeably in a generator control panel.

  • Page 4: Mc-900

    3-2 MC-900. 3-2.1 Control / Display Module. The Control / Display Module, figure 3-2.1, includes the control and test switches, the solid state logic elements and shutdown TATTLETALE lights that make up the generator engine control for a four cycle engine. 6-15/32 in.

  • Page 5: Mc-900-2

    Section 4: Installation 4-1 Location. Torque Terminal 4-1.1 The MC-900 series is designed to mount in a 12 lbs MURPHYMATIC Display module on the front panel and the Relay module on the inside bottom surface. Other types of installation is possible as long as the relationship of the two modules are maintained.
  • Page 6 Mounting Holes 1/8 in. (3 mm) diameter 1-1/2 in. (38 mm) clearance 4-15/32 in. (114 mm) 9-3/8 in. (238 mm) NOTE: Clearance required for wire run. 5-1/2 in. (140 mm) 1-7/8 in. (48 mm) clearance Figure 4-1.2: Dimensions 6 in. (152 mm) 3 in.
  • Page 7 Hourmeter Voltmeter Input – – Barrier Terminal Blocks Battery Auxiliary Starter Solenoid Starter 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 Figure 4-2.3.1: MC-900 wiring MANUAL START...
  • Page 8 Hourmeter Voltmeter Input – – Barrier Terminal Blocks Battery Auxiliary Starter Solenoid Starter (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 (OSR) Air damper solenoid Fuel Pressure...

  • Page 9: Overspeed Switch

    All shutdown circuits also should be tested. Table 4-4.1 lists the standard factory setting of the adjustable functions on the MC-900 series control. To determine if the frequency of the speed switch must be changed, calculate the required setting using the following formulas: No.

  • Page 10: Section 5: Operation

    7-1 Tools Required. 7-1.1 Some of the tools necessary for troubleshooting are built into the MC-900 Series controls. 7-1.1.1 By observing the lights on the front and rear of the control panel, clues to a problem and the possible source can...

  • Page 11: Mc-900 Selectronic Control Operation And Shutdown

    7-1.2 Other tools which may be required are: 7-1.2.l AC/DC Voltmeter for taking voltage readings and an Ohmmeter for testing resistance of wires and connections. 7-1.2.2 Jumper wires with alligator clips to bypass or simulate circuit closures. DO NOT USE THESE JUMPER WIRES TO CHECK IF VOLTAGE IS PRESENT AT A TERMINAL BY DRAWING AN ARC TO GROUND.
  • Page 12 Mode Selector Input Terminal 13.8 Number 13.8 13.8 13.8 13.8 27 (1) 28 (2) 13.8 13.8 37 (2) 13.8 13.8 13.8 13.8 13.8 13.8 OTES Note 1: AC voltage measured on AC scale of volt-ohmmeter. Note 2: Low Oil Pressure shutdown circuit. Oil pressure was the cause of shutdown on column 4.

  • Page 13: Section 8: Replacement Parts

    MC-900 controls manufactured for Waukesha Corporation. These OEM parts are available only to Waukesha and their distributors. 8-2.2 The MC-900 parts are the same as the Murphy MC-900 series that has been covered through out this manual. Table 8-1 Control / Display...

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