SET THE DELAY TO THE DIGITAL OUTPUT ACTIVATION
Now it’s possible to set the delay that will pass between the alarm condition set and the activation of digital output. On
E
display will appear ALR DLY and the value expressed in seconds (range 1÷900). The modification of the value is done
in the same way of the threshold set. With the confirmation (
A
key) the set is complete.
The programming will be referred to the digital output indicated on
E
display (DO1 o DO2).
With only the HI threshold set, the alarm condition is activated when the parameter set in alarm exceed the threshold.
The digital output is enabled only if the alarm condition remain activated for all delay time set. From the activation of the
digital output, the restore is automatic when the parameter decreases below the hysteresis value.
ELM-96
instruction manual
IM425-U v3.1
pag. 10
Digital
output
Alarm
Threshold HI
Hysteresis HI
t < delay
delay
Functioning for
exceeding the
maximum threshold
With only the LO threshold set, the alarm condition is activated when the parameter set in alarm drop below the
threshold. The digital output is enabled only if the alarm condition remain activated for all delay time set. From the
activation of the digital output, the restore is automatic when the parameter grow above the hysteresis value.
Digital
output
Alarm
Hysteresis LO
Threshold LO
t < delay
delay
Functioning for
dropping above
minimum threshold
With both LO and HI threshold set, the alarm condition is activated when the parameter set in alarm is outside from the
values band limited by LO and HI thresholds
.
The digital output is enabled only if the alarm condition remain activated for
all delay time set. From the activation of the digital output, the restore is automatic when the parameter return inside the
values band limited by LO and HI thresholds.
Digital
output
Alarm
Threshold HI
Hysteresis HI
Hysteresis LO
Threshold LO
t < delay
delay
delay
Functioning for
exceeding or dropping
by the band defined by
maximum and
minimum threshold
