Edit Configuration - Inputs
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4.4.7 DIGITAL INPUT FUNCTIONS
Where a digital input is NOT configured as “user configured”, a selection can be made from a list of
predefined functions. The selections are as follows:
Under the scope of IEEE 37.2, function numbers can also be used to represent functions in microprocessor
devices and software programs. Where the DSE input functions can be represented by IEEE 37.2, the
function number is listed below.
NOTE: - Input selection is dependant on controller.
Air flap closed auxiliary
IEEE 37.2 - 3 Checking or
interlocking relay
This input is used to connect to the Air flap switch contacts. This will
give an immediate shutdown in the event of the air-flap being closed. It
will also prevent the generator from being restarted if the air flap has not
been reset following an overspeed shutdown.
Alarm Mute This input is used to silence the audible alarm from an external source,
such as a remote mute switch.
Alarm Reset This input is used to reset any latched alarms from a remote location. It
is also used to clear any latched warnings which may have occurred (if
configured) without having to stop the generator.
Alt Config 1-3 Select
These inputs are used to instruct the module to follow one of the
alternative configuration settings instead of the main configuration
settings.
Auto Restore Inhibit
IEEE 37.2 - 3 checking or
interlocking relay
In the event of a remote start/mains failure, the generator will be
instructed to start and take load. On removal of the remote start
signal/mains return the module will continue to run the generator on
load until the Auto Restore Inhibit input is removed. This input allows
the controller to be fitted as part of a system where the restoration to
mains is controlled remotely or by an automated system.
Auto start Inhibit
IEEE 37.2 - 3 checking or
interlocking relay
This input is used to provide an over-ride function to prevent the
controller from starting the generator in the event of a remote
start/mains out of limits condition occurring. If this input is active and a
remote start signal/mains failure occurs the module will not give a start
command to the generator. If this input signal is then removed, the
controller will operate as if a remote start/mains failure has occurred,
starting and loading the generator. This function can be used to give an
‘AND’ function so that a generator will only be called to start if the
mains fails and another condition exists which requires the generator to
run. If the ‘Auto start Inhibit’ signal becomes active once more it will be
ignored until the module has returned the mains supply on load and
shutdown.
This input does not prevent starting of the engine in MANUAL or TEST
modes.
Auxiliary Mains Fail
The module will monitor the incoming single or three phase supply for
Over voltage, Under Voltage, Over Frequency or Under frequency. It
may be required to monitor a different mains supply or some aspect of
the incoming mains not monitored by the controller. If the devices
providing this additional monitoring are connected to operate this input,
the controller will operate as if the incoming mains supply has fallen
outside of limits, the generator will be instructed to start and take the
load. Removal of the input signal will cause the module to act if the
mains has returned to within limits providing that the mains sensing also
indicates that the mains is within limits.
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