EN-KO Electronic Control Systems
AMF 4.0/ENG/K.K./02
8
load. If operator wants to stop the engine in test mode panel must be returned to automatic or
manual mode. In manual mode you can stop the engine by stop button.
Manual Mode:
If you press the manual button genset will be switched to manual mode. In
manual mode all start stop and preheat operations, contactor control fulfilled by panel buttons.
PANEL RUNNING PHASES
1.
Generator is still:
In this condition engine running signals must be absent. These are oil
pressure, charging alternator warning lamp signal, generator voltage and frequency. In
manual mode panel doesn’t react to this signal but in automatic mode panel will try to
stop engine. If electricity panel of genset has manual control and these are wanted to be
used. Electronic panel must be switched to manual mode.
2.
Preheating:
In cold weathers preheating of engine can be necessary. Engine must be still
during preheating. If parameter “preheating time” is not zero, preheating is accomplished
before starting process by panel.
3.
Cranking:
In this stage engine is cranking. All engine signals must be absent and engine
must be still before cranking. If one of the engine signal is detected before cranking, panel
switch to start and stop alarm. Panel will show which signal is detected with engine start
stop alarm. If oil pressure signal is detected before cranking panel will wait for it to
decrease to zero. If “before cranking oil pressure delay” is elapsed and oil pressure is not
zero panel will switch to start and stop alarm. In cranking stage all engine signals,
alternator frequency, alternator voltage, charge alternator voltage and oil pressure is
controlled. If one of the signals is detected, Panel detects engine is running, crank
disconnects and switch to engine stabilization time. Generator status led starts to blink.
During cranking, “Str” message is shown in the display. Oil pressure can rise before
engine running so when oil pressure is detected, crank disconnected after “crank
disconnect oil pressure delay”.
4.
Stabilization:
After generator running signals detected panel waits for engine signals to
stabilize. After engine stabilization time, all alarms are activated.
5.
Running:
After stabilization time genset is in running condition. If genset in manual and
test modes, alternator contactor time is waited and alternator contactor is closed. In
manual mode operator can close the generator contactor by generator contactor button. In
running mode generator status led is lit.
6.
Cooling:
If a stop condition occurs by operator or mains status. Generator is switched to
cooling period and engine is cooled during “cooling time”. During this time engine status
led is blinking. If alternator contactor hasn’t been closed since last start cooling period is
bypassed. If mains failure occurs during cooling process generator is switched back to
running mode and alternator contactor is closed. After cooling process generator is
switched to stopping condition.
7.
Stopping:
After cooling stage, generator switches to stopping stage. If fueling system is
operating solenoid, operating solenoid is de-energized. If fueling system is stop solenoid
solenoid energizes until engine stops. If one of the engine running signals is detected
stopping period doesn’t ends. Alternator frequency and voltage, charge alternator warning
lamp signal and oil pressure must be absent. If panel detects engine signals after “fail to
stop delay” panel will switch to start stop alarm.
8.
Generator shutdown
:
Generator is stopped because of a red alarm. Generator cannot be
started if alarm is not cleared.
