Digital Input Filter; Alarm Inhibition Time - Seneca MyALARM2 Series User Manual

18.1.

Digital input filter

A digital alarm filter can be enabled. This filter is expressed in seconds (with tenth of a second
resolution). The filter lets you eliminate effects due to input rebounds. Setting a filter T time, the
filter lets the input status change only if it has remained in the previous conditions for T time:
Unfiltered
input
Filtered
input
18.2.

Alarm inhibition time

An inhibition time on the next alarm can be set. The alarm is ignored during inhibition time. This
time is reset after each alarm.
The effect of inhibition time on an open to close alarm can be seen in the example:
1=CLOSED
0=OPEN
USER MANUAL - MyALARM2 SERIES
ALARM ALARM
T inibiz T inibiz
T filter
ALARM
T inibiz
57