Woodward easYgen-2000 Series User Manual page 216

Configuration
Configure Application > Discrete Inputs
216
Fig. 86: Discrete inputs - alarm/control inputs - operation logic
(state N.O.)
In the state N.O.:
No potential is present during normal operation.
n
If an alarm is issued or control operation is performed, the input
n
is energized.
Fig. 87: Discrete inputs - alarm/control inputs - operation logic
(state N.C.)
In the state N.C.:
A potential is continuously present during normal operation
n
If an alarm is issued or control operation is performed, the input
n
is de-energized.
All reply messages from breakers are evaluated as
N.C.
Alarm inputs may also be configured as control inputs
and then be used as command variables in the Logi‐
csManager.
The discrete inputs 1 to 5 are pre-configured to various
functions and differ in their default values. However,
they may still be configured freely.
The discrete inputs 7 & 8 are always used for the cir‐
cuit breaker replies and cannot be configured.
If a discrete input has been configured with a shut-
down alarm that has been enabled to self-acknowl‐
edge, and has been configured as engine delayed the
following scenario may happen:
The discrete input shuts down the engine because
–
of its alarm class.
Due to the engine stopping, all engine delayed
–
alarms are ignored.
The alarm class is acknowledged automatically.
–
The alarm will self-acknowledge and clear the fault
–
message that shut the engine down.
This prevents the fault from being analyzed.
After a short delay, the engine will restart.
–
After the engine monitoring delay expires, the fault
–
that originally shut down the engine will do so
again. This cycle will continue to repeat until cor‐
rected.
easYgen-2200/2500 | Genset Control 37535B