Murphy MURPHYMATIC A900 Series Installation And Operating Manual Download Page 1

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SERIES A900

MURPHYMATIC

GENERATOR

ENGINE CONTROL SYSTEM

DESIGN, INSTALLATION

AND OPERATING MANUAL

A900-9025N

Revised 10-99

Section 40

(00-02-0197)

Summary of Contents for MURPHYMATIC A900 Series

Page 1: ...SERIES A900 MURPHYMATIC GENERATOR ENGINE CONTROL SYSTEM DESIGN INSTALLATION AND OPERATING MANUAL A900 9025N Revised 10 99 Section 40 00 02 0197...

Page 2: ...ot operate during installation Follow all safety warnings of the machine manufacturer Read and follow all installation instructions Certain danger to human safety and to equipment may occur if some eq...

Page 3: ...4 Installation 14 4 1 Location 14 4 2 Wiring 14 4 3 Crank Disconnect 19 4 4 Pre Operational Check Out 19 Section 5 Operation 21 5 1 Operator Controls 21 5 2 Operating Modes 21 Section 6 Routine Maint...

Page 4: ...phy c SWICHGAGE A combination indicating gauge and switch d TATTLETALE A term that refers to a shutdown indicating device or circuit in the control panel 1 5 How to use this manual 1 5 1 Section 1 2 4...

Page 5: ...of a two cycle engine 3 1 7 Table 3 1 7 illustrates the alarm and shutdown require ments of NFPA 110 NFPA99 and CAN CSA C282 M89 and compares the features of the A900 series controls to those require...

Page 6: ...X X X O O i Control Switch not set in Auto X X X X O O O X X X X X X X X O O j High Battery Voltage X X X O O O X X X O O k Low VoltageBattery X X X O O O X X X X X X X O O l Lamp Test X X X X X X X...

Page 7: ...preset speed c Oil Pressure tripped by the oil pressure SWICHGAGE if pressure drops below preset point while the engine is running d Water Temperature tripped by the water temperature SWICHGAGE if en...

Page 8: ...automatic control and the engine start sequence begins 3 3 1 2 Lamp Test Pushbutton Tests the lights on the A 901 2 module 3 3 1 3 Alarm Silence Pushbutton Turns off any audible alarm that is connecte...

Page 9: ...ill running Since the Overspeed shutdown circuit is activated by the frequency input it prevents the engine from running without overspeed protection g Remote Shutdown this circuit is provided to shut...

Page 10: ...ntrol Module includes the following engine control features a Cycle crank circuit will crank the engine for 15 seconds then rest for 15 seconds until the engine starts The crank rest time is selectabl...

Page 11: ...s circuit is provided for an additional alarm that may be required by the user 3 4 2 Relay Module The Relay Module figure 3 4 2 includes all of the control alarm and shutdown relays that are required...

Page 12: ...is depressed the set point of the speed switch is lowered approximately 10 3 The push to test switch can also be used to set the overspeed switch at approximately 110 of running speed Hold the switch...

Page 13: ...he Mode Selector Switch is in either Auto or Test When the Mode Selector is turned Off the Control On signal is open This can be used to signal switch position or to reset an external circuit when the...

Page 14: ...ing With engine speed at 1800 RPM or 3540 Hz g Cooldown circuit this circuit keeps the engine running for five minutes after the transfer switch has removed the load from the generator and signaled th...

Page 15: ...Test and no shutdown TATTLETALE circuit is latched on This can be used to signal that the generator engine is ready to automatically start or is running in Test 3 6 3 3 The Control On function at term...

Page 16: ...tdown Circuits provide first out indication of cause of shutdown These circuits deactivate the fuel relay and lockout the A903 until reset Shutdown circuits are activated by the crank disconnect circu...

Page 17: ...ces recommended for installation 4 1 3 Wiring Terminals Terminal blocks are provided on both sides of the Control Display enclosure and the Relay Module Torque all terminal screws to 12 inch pound max...

Page 18: ...3 4 in 171 mm 9 3 8 in 238 mm 6 in 152 mm 4 15 32 in 114 mm Mounting Holes 1 8 in 3 mm diameter 1 1 2 in 38 mm clearance 5 in 127 mm maximum between A 900 Series module relay module when mounting 1 7...

Page 19: ...REMOTE AUDIBLE LOCAL AUDIBLE N C N C OVERSPEED RELAY SHUTDOWN RELAY FUEL RELAY CRANK RELAY AUX CRANK DISCONNECT N C CONTROL ON SYSTEM READY FUSED B B Energize to Stop solenoid Energize to Run solenoid...

Page 20: ...Alarm I Fuel Relay J1 J2 Q2 Q1 J1G Red Blk LOW WATER LEVEL REMOTE VISUAL REMOTE AUDIBLE LOCAL AUDIBLE N C N C OVERSPEED RELAY SHUTDOWN RELAY FUEL RELAY CRANK RELAY AUX CRANK DISCONNECT N C CONTROL ON...

Page 21: ...dible Alarm H Shut Down Relay D Local Audible Alarm I Fuel Relay J1 J2 Q2 Q1 J1G Red Blk LOW WATER LEVEL REMOTE VISUAL REMOTE AUDIBLE LOCAL AUDIBLE N C N C OVERSPEED RELAY SHUTDOWN RELAY FUEL RELAY CR...

Page 22: ...e to increase setting The adjustments are 20 turn controls without stops at either end 4 4 1 1 Be sure to have a fully charged battery to do these tests Low battery voltage can cause improper results...

Page 23: ...on and the engine shuts down f Release pushbutton check Overspeed light on front panel to be sure it is on g Turn Mode Selector switch OFF to reset shutdown circuits then back to TEST h When engine s...

Page 24: ...the Mode Selector switch in the AUTOMATIC position When a start signal is received the engine will start 5 2 3 2 When the start signal is removed the engine will stop It is now ready to restart 5 2 4...

Page 25: ...put Voltage Input Voltage Input Voltage Input Voltage Input Voltage 13 8 27 6 13 8 27 6 13 8 27 6 13 8 27 6 13 8 27 6 31 6 6 6 6 6 6 6 6 6 6 32 6 6 6 6 6 6 6 6 6 6 33 6 6 6 6 6 6 6 6 6 6 34 6 6 6 6 6...

Page 26: ...o shutdown the engine and generator a The TATTLETALE light for that function turns on b Shutdown relay K 2 is energized closing its contacts at terminal 9 These contacts can be wired to a shunt trip s...

Page 27: ...e OEM parts and are available only to Detroit Diesel and their distributors 8 2 1 The A900 DDC parts are the same as the Murphy A900 series that has been covered throughout the A900 manual except the...

Page 28: ...1722 410697 fax 44 1722 410088 e mail france fwmurphy co uk www fwmurphy co uk francais htm In order to consistently bring you the highest quality full featured products we reserve the right to chang...

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