2021 IQtronic technologies Europe s.r.o.
Page 93 of 97
18. Input specification
18.1 Analog input 1 and 2 - ADH and ADL
Input impedance and internal connection is displayed on the block scheme.
IQTD-GS440 is equipped with two analog inputs for voltage measurement.
1 – ADIN1 ADH
pin3
ranging
from 0 to 50VDC, or 0 to 30 VAC,
resolution of 0.1V and impedance
of 21k5, you can set an alarm for
monitoring the voltage level for
one or both limits.
2 – ADIN2 ADL pin4
ranging
from 0 to 5VDc, resolution of 0.1V
and impedance of 5k1, you can
set an alarm for monitoring the
number of impulses (min/ max)
defining the limits (min/ max) for
voltage within the respective
input. An impulse is detected
when the voltage within the defined range of limits is present. An alarm SMS
message will also contain the level of such voltage. It is convenient for example
for monitoring voltage in electric fences in case you use an adapter from the set
of accessories.
The presence of this voltage can be indicated on the front panel of your device
if the following option is configured - LEDOption=Analog. limit
0.2 V.
The mechanism of impulse detection at the ADL input with defined limits
ADminLO/maxLO is shown in the following diagram.