User manual
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3.9 Digital Inputs (Configurable Switched Inputs) Setup
There are eight configurable switched inputs. Each input can be selected to any
of the features given in Table 18 below.
Table 17 – Configurable Switched Input Selections
Name
Description
Low Air Pressure
This input generates a Low Air Pressure failure when active
only in Crank. It is ignored in the OFF, AUTO, and RUN
modes.
Low Hydraulic Pressure
This input generates a Low Hydraulic Pressure failure when
active only in Crank. It is ignored in the OFF, AUTO, and
RUN modes.
Low Oil Pressure
This input generates a “Low Oil Pressure” failure when
active only when the controller is in the RUN mode.
EPS Supplying Load
This digital input is used to meet NPFA110 requirements
but is not required if using AC current sensing as the
GSC400 Front Panel EPS Supplying load indication lamp
will light if AC current is detected. See the current sensing
setup section 3.7.3 on page 62 for more information.
After crank success, if the input is active, the “EPS
Supplying Load” lamp on the GSC400 front panel will turn
on. A message over modbus is also sent (to support
RA400 remote panel or custom project).
If the generator is starting up but is not running (i.e. the
controller is not in the RUN Mode) and if the EPS supplying
load input is active, the GSC400 will cancel the start
sequence and enter the failure state on an EPS load failure.
Note in firmware version 2.03 and below the EPS Supplying
load failure will also trigger if the output becomes active
within 10s after the RUN state was entered.
Note: the AC current method does not generate an EPS
Supplying Load Failure condition; it only turns the lamp on
or off.
Alarm Silence
This input silences the buzzer on the GSC400 unit when
active.
Low Coolant Level
This input generates a Low Coolant Level failure when
active.
Volt Select 1
These inputs allow the user to change the supported
generator configuration without having to go into the
controller menu. See section 4.4.2.1 for more details.
Volt Select 2
Idle Mode
This input, when active, allows the generator to run at a
lower speed without triggering under-voltage, under-
frequency, or under-speed warnings or failures. “Idle