CAUTION!
The potential difference between AGND and ZP at the module must not be
greater than 1 V, not even in case of long lines .
If AGND does not get connected to ZP, the sensor current flows to ZP via
the AGND line. The measuring signal is distorted, as a very low current flows
over the voltage line. The total current through the PTC should not exceed 50
mA. This measuring method is therefore only suitable for short lines and small
sensor currents. If there are bigger distances, the difference measuring method
has to be preferred.
The following measuring ranges can be configured
Chapter 1.6.2.2.2.9 “Measuring ranges”
Voltage
0 V...10 V
1 channel used
Voltage
-10 V...+10 V *)
1 channel used
*) if the sensor can provide this signal range
The function of the LEDs is described under Displays
Chapter 1.6.2.2.2.7 “Diagnosis”
In order to avoid error messages or long processing times, it is useful to configure unused
analog input channels as "unused".
Connection of passive-type analog sensors (Current)
UP
ZP
1.0
I0-
1.1
I1-
1.8
UP
1.9
ZP
PTC
2.0
I0+
2.1
I1+
2.8
UP
2.9
ZP
4 ... 20 mA
-
+
Fig. 30: Connection example
The following measuring ranges can be configured
Chapter 1.6.2.2.2.6 “Parameterization”
Chapter 1.6.2.2.2.9 “Measuring ranges” on page 449
Current
4 mA...20 mA
1 channel used
The function of the LEDs is described under Displays
Chapter 1.6.2.2.2.7 “Diagnosis”
Device specifications
I/O modules > Analog I/O modules
2022/01/31
3ADR010278, 3, en_US
441