User manual

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3.3 Engine Logic
The Engine Logic menu contains settings that control the starting and stopping of
the engine. All parameters in bold below are located in the engine logic menu
unless otherwise noted.
The Crank Disconnect setting determines the speed that must be attained
before the crank output is turned off and the genset is considered to be running.
The Crank Oil Pressure parameter is used to determine when to check for the
Locked Rotor condition. If the oil pressure is lower than the Crank Oil Pressure
the GSC400 will check the engine speed for a locked rotor condition (see section
3.3.1.1 on Locked Rotor). Set this to 0 to disable it.
3.3.1 Startup Sequence
All parameters in bold below are located in the engine logic menu unless
otherwise noted.
If one of the configurable switched inputs is set to Start Inhibit (located in Inputs
Setup menu) and the configurable switched input is not active then the GSC400
will not perform a manual or automatic start. Once the configurable switched
input becomes active a start will be allowed. This feature is in firmware versions
2.06 and above.
When performing an automatic or manual start, the GSC400 will wait for the
Delay To Start duration and then turn on the glow plug output for the Preheat
(glow plug) duration. The fuel output is also turned on. If Preheat is 0 this is
skipped.
Normally the fuel remains off in the AUTO mode until Preheat is entered. For
electronic engines some applications require that the ECM (usually powered by
the Fuel Relay output) to be powered in the AUTO mode in order to start the
generator as quick as possible. The J1939 menu has settings to allow the fuel
output to turn on in the AUTO mode. See section 4.1.1 on page 65.
After the preheat time, the crank output is turned on for the duration specified by
the Crank Time. If the engine speed does not go above the Crank
Disconnect Setting before the crank time then the crank output is turned off
and the controller waits a period specified by the Crank Rest Time. The locked
rotor condition is also checked while cranking (see 3.3.1.1 Locked Rotor
below). The fuel output is also turned off unless the “Fuel On During Crank
Rest” is enabled.