InteliLite
NT
– AMF20/25, SW version 2.2, ©ComAp – September 2014 108
IL-NT-AMF-2.2-Reference Guide.pdf
Gen-set Operation States
Engine state machine
Init
Autotest during controller power on.
Not ready
Gen-set is not ready to start.
For example when shutdown alarm is active or unit is in OFF mode.
Prestart
Prestart sequence in process, Prestart output is closed.
Usually used for preheating or processes executed prior gen-set start.
Cranking
Engine is cranking.
Starter output is closed
Pause
Pause between start attempts.
Starting
Starting speed is reached and the
Idle timer
is running.
Running
Gen-set is running at nominal speed.
Loaded
Gen-set is running at nominal speed and GCB OPEN/CLOSE is closed.
Stop
Stop.
Automatic or manual stop command was issued, engine is stopping.
Shutdowns
Shut-down alarm activated.
Ready
Gen-set is ready to run.
Cooling
Gen-set is cooling before stop.
EmergMan
Emergency Manual gen-set operation.
Used for bypass the controller and engine manual start.
ManIdle
Indicates that Manual IDLE function is activated and Engine is running on Idle speed.
“Engine started” conditions
Engine speed (RPM) >
Starting RPM
or
AI: Oil press >
Starting POil
or
D+ terminal active (reached 80% of supply voltage) for minimum 1s or
Generator voltage > 25% of NomVolts Ph-N or NomVolts Ph-Ph
(any phase)
Any of these conditions will disconnect starter of the engine, however for transition to next state RPM
needs to be higher than
Starting RPM.
“Engine running” conditions
RPM > 2
RPM
or
Analog input Oil pressure >
Engine params
:
Starting POil
or