User manual

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2.13 Idle Mode
Menu Location
Page
1
Configurable
Switched Inputs
Advanced Setup > Inputs Setup
67
2
Configurable
Outputs
Advanced Setup > Outputs Setup
69
For generators that have the capability of idling at a lower speed than the speed
at which power is produced, the GSC400 controller has an Idle Mode feature that
suppresses the warnings and failures for under-voltage, under-frequency, and
under-speed. The GSC400 displays “Idle Running” when this feature is
enabled.
Idle Mode Switched Input
The controller enters and remains in Idle Mode as long as the “Idle Mode”
configurable switched input is active.
Switched Output Option
If the user requires a configurable switched output to be used during Idle Mode,
the “Voltage Regulator” switched output feature can be used. It is off when the
controller is in Idle Mode; otherwise it is on when the fuel relay is on with the
exception of crank rest where it remains active regardless of the state of the fuel
relay. It is off when the fuel relay is off. The output is usually used to turn off the
generator voltage regulator but can be used for any purpose.
Transitioning from IDLE Mode to RUN Mode
When coming out of Idle mode the warnings and failures behave the same as
from the AUTO mode: Warnings come into effect after 5s and failures come into
effect after 8s. You may need to tune the electronic governor so that the engine
is up to full speed in time.
2.13.1 Idling Engine during Warm-up and Cool-down
For users who have engines that idle during warm-up and/or cool-down, two
configurable outputs can be set to “Warm-up” and “Cool-down” and tied to the
“Idle Mode” switched input via one or two external relays (shown in Figure 9
below).
Refer to the previous section to setup the Idle Mode Switched Input and then
follow the diagram below.