HVAC40…
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V1.1
Alarm (only HVAC40R17… models)
The commands starting with AW require prior sending of the CAL START command.
The threshold values refer to the relative humidity measurement or the dew point
measurement depending on the humidity measurement selected (via P0/P1 serial
commands for HVAC40S17… models, via dip switch for the other models).
Command
Description
AWSn
Sets the relay operating mode
n=0
⇒
Negative (NC contact is closed if no alarm, NO contact is closed if in alarm)
n=1
⇒
Positive (NO contact is closed if no alarm, NC contact is closed if in alarm)
Default: Negative
ARS
Reads the relay operating mode
AWBn
Sets the buzzer activation status: n=0
⇒
OFF (default); n=1
⇒
ON
ARB
Reads the buzzer activation status
AWAn
Sets the alarm activation status: n=0
⇒
OFF (default); n=1
⇒
ON
ARA
Reads the alarm activation status
AWEn
Sets the alarm operating mode
n=0
⇒
Above threshold (alarm is on if measurement is greater than threshold 1)
n=1
⇒
Below threshold (alarm is on if measurement is less than threshold 1)
n=2
⇒
Outside thresholds (alarm is on if measurement is less than threshold 1
or greater than threshold 2)
Default: Above threshold
ARE
Reads the alarm operating mode
AWT1snnn
Sets the threshold 1 value to snnn (“s” is the sign of the value)
(*)
Default: 300 (=30.0 %RH)
ART1
Reads the threshold 1 value
AWT2snnn
Sets the threshold 2 value to snnn (“s” is the sign of the value)
(*)
Default: 700 (=70.0 %RH)
ART2
Reads the threshold 2 value
AWHnnn
Sets the hysteresis value to nnn
(*)
Default: 100 (=10.0 %RH)
ARH
Reads the hysteresis value
AWD1nnn
Sets the alarm activation delay to nnn seconds (0… 600 s)
Default: 0
ARD1
Reads the alarm activation delay value
AWD2nnn
Sets the alarm deactivation delay to nnn seconds (0… 600 s)
Default: 0
ARD2
Reads the alarm deactivation delay value
(*)
The value must be written without the decimal point, even if it is not an integer value
(e.g., to set thresholds 1 to 15.0 %RH, write AWT1+150). In the case of the dew point
measurement, the thresholds and hysteresis values are considered in the unit of meas-
urement set in the instrument.
Содержание Delta OHM HVAC40 Series
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