InteliLite Global Guide
118
5.5.18 Gen-set operation states
Engine state machine
Init
Autotest during controller power on.
Note: Sometimes controller stays in Init mode after FW upgrade. It means that there are
new parameters which should be checked by user. It is possible to disable this control
via InteliConfig.
Not ready
Gen-set is not ready to start.
Example: When shutdown alarm is active or unit is in OFF mode.
Prestart
Prestart sequence in process, PRESTART (PAGE 585) output is closed.
Example: Usually used for preheating or processes executed prior gen-set start.
Cranking Engine is cranking, STARTER (PAGE 597) 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 CLOSE/OPEN (PAGE 574) is closed.
Stop
Stop.
Example: Automatic or manual stop command was issued, engine is stopping.
Shutdown Shut-down alarm activated.
Ready Gen-set is ready to run.
Cooling Gen-set is cooling before stop.
EmergMan
EMERGENCY MAN (PAGE 527) gen-set operation.
Example: Used for bypass the controller and engine manual start.
Engine started conditions
Engine speed (RPM) > Starting RPM (page 191) or
Oil pressure > Starting Oil Pressure (page 192) or
Binary input OIL PRESSURE (PAGE 534) is in logical 0 or
D+ terminal active (reached D+ Treshold (page 206) of supply voltage) for minimum 1 s or
Generator voltage > 25% of Nominal Voltage Ph-N (page 179) or Nominal Voltage Ph-Ph (page 179)
(any phase)
Note: Any of these condition will disconnect starter of the engine, however for transition to next state RPM
needs to be higher than Starting RPM (page 191).
Engine running conditions
Engine speed (RPM) > Starting RPM (page 191) or
Oil pressure > Starting Oil Pressure (page 192) or
Binary input OIL PRESSURE (PAGE 534) is in logical 0 or
Generator voltage > 25% of Nominal Voltage Ph-N (page 179)
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