ABB AC500 PLC - Connection of Active-type Analog Sensors (Voltage) with Electrically Isolated Power Supply

Pt100 -50 °C...+70 °C 3-wire configuration, two
channels used
Pt100 -50 °C...+400 °C 3-wire configuration, two
channels used
Pt1000 -50 °C...+400 °C 3-wire configuration, two
channels used
Ni1000 -50 °C...+150 °C 3-wire configuration, two
channels used
The I/O module performs a linearization of the resistance characteristic.
In order to avoid error messages from unused analog input channels, it is useful to configure
them as "unused".
Connection of Active-type Analog Sensors (Voltage) with Electrically Isolated Power Supply
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
0 ... 10 V
-10 ... +10 V
+
-
U
IN
AGND
Fig. 72: Connection example
By connecting the sensor's negative pole of the output voltage to AGND, the
electrically isolated voltage source of the sensor is referred to ZP.
The following measuring ranges can be configured for AX521 Ä Chapter 1.5.2.2.4.6 “Parame-
terization” on page 531 and for AX522
Ä Chapter 1.5.2.2.5.6 “Parameterization” on page 555:
Voltage 0 V...10 V 1 channel used
Voltage -10 V...+10 V 1 channel used
In order to avoid error messages or long processing times, it is useful to configure unused
analog input channels as "unused".
Device Specifications
I/O Modules > Analog I/O Modules
2019/04/173ADR010121, 13, en_US550