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

Fig. 45: Connection example
CAUTION!
If GND is not directly connected to ZP at the sensor, the supply current flows via
the GND line to ZP. Measuring errors can only occur caused by voltage differ-
ences higher than ±20 VDC between GND and ZP.
The measuring range can be configured Ä Chapter 1.5.2.2.2.6 “Parameterization”
on page 489 :
Voltage Common mode voltage 1 channel used
The function of the LEDs is described under Diagnosis and displays / displays Ä Chapter
1.5.2.2.2.7 “Diagnosis” on page 493.
In order to avoid error messages or long processing times, it is useful to configure unused
analog input channels as "unused".
Connection of Active-type Analog Sensors (Current) with Electrically Isolated Power Supply
UP
ZP
1.0
I0-
1.1
I0B
1.8
UP
1.9
ZP
PTC
2.0
I0+
2.1
I0A
2.8
UP
2.9
ZP
+
-
-20 ... +20 mA
0 ... +20 mA
+4 ... +20 mA
U
IN
Fig. 46: Connection example
Common Mode
Range (+/-20 V)
Device Specifications
I/O Modules > Analog I/O Modules
2019/04/173ADR010121, 13, en_US478