7.4.3 Technical details regarding the universal inputs
7.4.3.1 0/4 to 20mA mode
Note:
Above 22,5mA, the affected input becomes highly resistive (safety shutdown to prevent damage to the
universal input).
Resolution
6µA
I
max
22,5mA
Load
100Ω
7.4.3.2 0 to 2V mode
Resolution
610µV
U
max
2,5V
Load
220k1
7.4.3.3 0 to 10V mode
Resolution
8,3mV
U
max
32V
Load
8k9
7.4.3.4 Standard digital modes (PWM, frequency, digital, day counter, impulse counter)
General
U
max
32V
Low
<1,36V
High
>2,73V
Load
8k9
PWM
Measurement
range
1...99%
f
max
100Hz
Minimum pulse
length
1ms
Frequency
Measurement
range
1...1000Hz
Day and pulse
counter
Minimum pulse
length
20ms
7.4.3.5 Low power digital mode (LP digital)
Important note:
If a universal input is in "LP digital", a switch contact must only be supplied by V
batt
.
Attaching an external voltage will cause damage to the universal input. In comparison to "digital" mode, the
energy consumption during "LP digital" mode with a closed switch contact is thus reduced by a factor of 13.
28 of 73
NivuLog Easy - Rev. 05 as of 02.07.2012