SECTION 5 DE-18 USER MANUAL
53
• Interstage Pressure, P1 xxx psi
• Discharge Pressure, P2 xxx psi
• Oil Filler Discharge Pressure, P3 xxx psi
• Oil Filler Inlet Pressure, P4 xxx psi
• Oil Filter Differential Pressure, P4-P3 xxx psid
• 1st Stage Discharge Temperature, T1 xxx°F
• Second Stage Discharge Temperature, T2 xxx °F
• Oil Temperature at Bearing Manifold, T3 xxx °F
• Second Stage Inlet Temperature, T4 xxx °F
• Package Discharge Temperature, T5 xxx °F
• Sump Oil Temperature, T6 xxx
• Engine Speed, xxx RPM
• Fuel Level, xxx %
• Battery, xxx VDC 'Engine Coolant, xxx of
• Engine Oil, xxx psi
• Load, xxx %
• CAT Status, Normal. Alarming or Shutdown
STATUS DISPLAY
The following are the various status messages that
indicate the state of the compressor:
PWRUP DLY- This message will be displayed for
five (5) seconds when the power is applied to the
panel. The purpose of this mode is to block false
shutdowns, until five (5) seconds have passed. The
purpose of the delay is for the analog instrumentation
to have a chance to come up to their proper
readings.
STANDBY· This message indicates that no class "A"
shutdowns exist, and the engine is ready for starting.
RESETTING- This message will be displayed while a
shutdown or an alarm is being reset.
CRANK ON- This message will be displayed while
the Crank is engaged during the cranking cycle.
CRANK OFF- This message will be displayed while
the Crank is dis-engaged during the cranking cycle.
WARMUP- This message will be displayed while the
five (5) minute Warmup Delay has not expired, or the
engine coolant temperature has not reached the
Warm up temperature setpoint.
RUNNING- This message will be displayed while the
compressor is operating.
COOLDOWN· This message will be displayed while
the Cooldown Delay is timing.
SHUTDOWN- This message will be displayed while
the system is shutdown. The following are the status
messages that indicate the state of the engine:
NORMAL- Ready to run or running properly.
ALARMING· Engine warning is present.
SHUTDOWN- Engine shutdown is present.
MDDM
The following engine parameters can be viewed by
pressing the “UP" or “DOWN" arrows:
• Engine RPM, xxx RPM
• Coolant Temperature, xxx °F
• Oil Pressure, xxx psi
• Engine Load, xxx %
• Fuel Pressure, xxx psi
• Engine Load, xxx %
• System Volls, xx v
• Manifold Temperature, xx °F
• Boost Pressure, xx psi
• Fuel Rate, xx gph
• Fuel Temperature, xx °F
• Engine Hours, xx hr
5.4 EMS 547 SEQUENCE OF
OPERATION AND
PARAMETER SET-UP.
Reference the Murphy Sequence of Operation
Manual which accompanies this compressor
package for details.
TYPE OF SYSTEM
The control system is one Murphy EMS 547 engine
controller, communicating to a Murphy C267 1/0
expansion module, a Murphy MDDM that receives
engine data including the Engine RPM over the SAE
J 1939 data bus from a CAT diesel engine, and a
Murphy C277 module that receives data from
thermocouples. The system is powered by the
24VDC cranking battery. The CAT engine is driving a
Sullair 2 stage oil free screw air compressor. The
NOTE
Parameter adjustments are for qualified
personnel only. Changing these adjustments
could affect operation of the compressor
package and should be considered dangerous
or damaging to equipment and personnel.
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