Module Operation
There are two modes of operation
• Auto Mode
• Manual Mode
8.1 Auto Mode
To enter Auto mode press “AUTO” key. The controller can be used in two configurations while in Auto
mode.
• Auto Mains Failure (AMF)
• Remote start/stop
• Cyclic mode
• Auto Exercise
Auto Mains Failure (AMF)
When the Mains Monitoring is enabled in the Mains configuration and the controller is in the Auto mode,
AMF mode gets activated.
In this mode, if the mains healthy condition is present then the genset remains in Stop mode. When the
mains unhealthy condition occurs, genset will be cranked. Once the preconfigured engine alternator
voltage or frequency or RPM or lube oil pressure is detected, then engine will be on. Controller will latch
the genset contactor when genset loading voltage and frequency are above the minimum healthy
thresholds. Engine run hours will start incrementing when the genset voltage becomes greater than Min
Healthy Voltage. During genset running, if the mains voltage returns, Mains Detect Delay will start first.
If the mains is found to be healthy for this delay then Return To Mains Delay timer starts. After this,
genset contactor will get opened and after the Load Transfer Delay, mains contactor will get latched and
controller will command genset to stop after Engine Cooling Time.
During Crank time, if the mains voltage recovers or any stop command or shutdown alarm occurs
controller will not issue start command. To start the genset again, it is necessary to clear all the alarms
manually.
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