Deif SGC 420 User Manual page 49

Remote start/stop mode
DG OFF
Remote start
Warm up
Warm up delay expired
DG ON
Remote stop
Return to
Mains
Return to Mains delay expired
Engine
cooling
To use the Remote start/stop mode, configure one of the digital input as Remote start/stop (Latched type input) and set the controller
to Auto mode. Disable Site monitoring and Cyclic mode.
In Remote start/stop mode, the genset can be commanded to start and stop by activating the pre-configured Remote start/stop
input. If the Remote start command is received, the controller sends a Start command and the genset starts according to the Start
sequence. When the genset loading voltage and frequency are above the Minimum healthy thresholds, the Warm-up delay timer
starts. At the end of the Warm-up delay, the Load transfer delay starts and the genset latches. Engine running hours increases while
the genset runs. The running hours stop increasing when a Stop command is received.
When the Remote stop command is received the controller opens the genset contactor, and the Engine cooling time starts. At the
end of the Engine cooling time, the controller initiates the Stop sequence by giving a Stop command.
Do not enable Mains monitoring and Remote start/stop configuration simultaneously.
Exercise Mode
Two scheduled sequences to start and stop the genset can be configured with SGC 420/421.
Exercise mode occurs when the controller is in Auto mode with no shutdown or warning alarms. In this mode, load transfer on
mains/genset is configurable. Scheduled sequences can be configured to repeat daily, weekly or monthly.
• If the controller is in Auto mode, Exercise mode runs at the scheduled time for preset DG ON duration time. The controller exits
Exercise mode if the DG ON duration time expires or if the Stop/Config
• If the controller is in Manual mode when the scheduled sequence begins, the genset will not start. If the controller is switched to
Auto mode during the Exercise, the genset will start and run for the remaining scheduled time.
• The genset controller will not respond to a Remote start command in Exercise mode.
• In AMF mode, if the mains is unhealthy or cut off, or when the genset is running in Exercise mode, the genset first runs the
Exercise mode and then the AMF mode. Load is transferred to the genset, even if Load transfer is disabled in Exercise mode.
The genset stops when the mains becomes healthy.
• If both exercises are scheduled at the same time, the Start time for second exercise is increased by one minute.
USER MANUAL 4189341227A UK
Engine
cooling
button is pressed during a scheduled sequence.
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