Deif SGC 420 Mk II User Manual page 55

In the smart connect software, go to Mains > Configuration > Mains monitoring and make sure that mains
monitoring is enabled. Go to Module in the smart connect software and make sure that auto exercise, cyclic mode, and site
battery monitoring is not enabled.
If there is a mains failure, the SGC controller automatically starts the genset and switches to generator supply (see the
flowchart above) after an adjustable delay time.
The genset starts as specified by the start sequence. When the genset loading voltage and frequency are more than their
minimum set points, the Warm-up delay timer starts. At the end of the warm-up delay, the timer for the load transfer delay
starts, and the genset breaker closes. When the mains returns, the controller synchronises the mains breaker to the busbar
when the Return to mains delay timer has expired. The genset cools and then stops.
If the mains returns or a stop command or shutdown alarm occurs during the engine crank time, the controller will not send
a start command. You must clear all the alarms manually to start the genset again.
Timers
Timers > Start/Stop
Parameter
Warm-Up Delay
Return To Mains Delay
Load Transfer Delay
User manual 4189341360A EN
Range
0 to 60 s
0 to 600 s
1 to 60 s
Default
3 s
5 s
1 s
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