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• Mains monitoring is enabled.
In the smart connect software, go to Mains > Configuration > Mains monitoring and make sure that mains
monitoring is enabled. To make sure that auto exercise is not enabled for events 1 and 2, go to Module > Auto Exercise
> Event 1/Event 2.
The SGC controller can automatically start the genset and switch to generator supply if there is a mains failure (see the
flowchart above). The controller does this if the mains continues to fail after the Mains detect delay timer has expired.
The genset starts as specified by the start sequence. Once 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
Mains Detect Delay
Warm-Up Delay
Return To Mains Delay
Load Transfer Delay
User manual 4189341340A EN
Range
1 to 300 s
0 to 60 s
0 to 600 s
1 to 60 s
Default
2 s
3 s
5 s
1 s
Page 43 of 76
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