DynaGen GSC400 Series, Installation And User Manual

Page: 39 / 105

39 of 105
5.11.2 EPS Supplying Load
The GSC400 is often used to control a utility backup generator. When the generator is
started and load is detected on the generator when the GSC400 is in the RUN mode the
“
EPS Supplying Load ” LED on the GSC400 front panel will turn green. This indicates
that the generator is supply load as normal. If load is detected on the generator when it is
not in the Run mode (e.g. the GSC400 is cranking, preheating, etc) the GSC400
terminates starting and enters the failure mode and the “EPS Supplying Load” LED on
the GSC400 front panel will turn red.
The generator is considered loaded when either the AC current is equal to or greater than
5% of the over current failure setpoint or if the EPS Supplying Load Switched Input is
active.
5.12
J1939
This section applies if J1939 is enabled for one or more parameters. The parameters will
be displayed the same for J1939 as they are for analog inputs. The only difference is that
when a certain parameter is not read from the J1939 bus the text “N.A.” is displayed in
place of the parameter value.
If the Loss of ECM setting is enabled the GSC400 will shut the generator down on “Loss
of ECM” if no communications are detected on the J1939 bus.
5.12.1 Cummins Idle Speed Control
For generators using Cummins electronic engines the GSC400 has the capability of
switching between Idle speed and operating speed (i.e. the speed at which the generator
produces load) if enabled. This feature is activated by applying a signal to one of the
GSC400 digital inputs (see section 6.1.2 on page 52 for more information on how to
setup this feature).