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Operation 4-11
MN2417
Digital Engine Controller Description EM0046A21 (MRS17) Continued
Table 4-4 Manual Mode Sequence Description
Menu Status Condition of Transition
Action
Next State
Start request PRESTART on,
Prestart time counter started
PRESTART
Ready
RPM > 2 or Oil pressure detected or
Gen voltage > 10V
Stop (Stop fail)
OFF mode selected or Shut down alarm active Not Ready
Not Ready RPM < 2, Oil pressure not detected, Vgen < 10V,
no shutdown alarm active, other than OFF mode
selected
Ready
Prestart Prestart time elapsed STARTER on, FUEL SOLENOID on,
MaxCrank time counter started
Cranking
RPM> Start RPM STARTER off, PRESTART off Starting
D+ input activated or oil pressure detected or
Gen voltage > 25% Vgnom
STARTER off, PRESTART off Cranking
Cranking
MaxCrank time elapsed, 1st attempt STARTER off, FUEL SOLENOID off,
STOP SOLENOID on,
CrankFail pause timer started
Crank pause
MaxCrank time elapsed, last attempt STARTER off, PRESTART off Shutdown (Start fail)
Main
Measurement
Crank Pause CrankFail pause elapsed STARTER on, FUEL SOLENOID on,
STOP SOLENOID off,
MaxCrank time counter started
Cranking
Starting 80% Nominal speed reached READY TO LOAD on,
MaxStabTime counter started
Running
Stop request READY TO LOAD off,
Cooling time timer started
Cooling
Running
RPM = 0 or any other shutdown condition READY TO LOAD off,
FUEL SOLENOID off
Shutdown
Generator CB = Closed Loaded
Generator CB = Opened Running
Loaded RPM = 0 or any other shutdown condition FUEL SOLENOID off, STOP SOLENOID
on, READY TO LOAD off
Shutdown
Cooling time elapsed FUEL SOLENOID off,
STOP SOLENOID on
Stop
Cooling
RPM = 0 or any other shutdown condition FUEL SOLENOID off,
STOP SOLENOID on
Shutdown
Start request READY TO LOAD on Running
Stop
RPM = 0, Oil pressure not detected, Vgen < 10V Ready
S
top
60 sec. Elapsed Stop (Stop fail)
Some output conditions are optional and may require additional programming of field connection.
See appropriate wiring diagram.
Adjustment Menu
The adjustment menu, Figure 4-8 allows setting engine and generator values such as
Passwords, Pre−Start Time, Crank Time, Cool Down Time, Alarm Conditions and values,
Shutdown Conditions and values, power transfer settings, etc.
Figure 4-8 Adjustment Menu
> ENGINE BASIC
ENGINE PROT
GEN BASIC
GEN PROTECT
MAINS FAIL
Use Y and B to move the cursor to the desired parameter.
Press ENTER to select the parameter group.
Press PAGE to move to the next page of menu items.
History Menu
The History file stores 117 records. When full, the oldest record is overwritten. Use Y and B to
move through the records and Enter key to select the record you want to view. Then use the Y
and B to move through the data in that record. Each record has a date and time stamp to help
discover what happened at a certain time.