ABB AC500 PLC - Connection of passive-type Analog Sensors (Current) to the Analog Inputs

Fig. 86: Connection of active-type sensors (voltage) with no electrically isolated power supply to
the analog inputs
CAUTION!
Risk of faulty measurements!
The negative pole at the sensors must not have a too big potential difference
with respect to ZP (max. ±1 V within the full signal range).
Make sure that the potential difference never exceeds ±1 V.
The following measuring ranges can be configured Ä Chapter 1.5.3.1.1.6 “Parameterization”
on page 585 :
Voltage 0 V...10 V 1 channel used
Voltage -10 V...+10 V 1 channel used
For a description of the function of the LEDs, please refer to the Diagnosis and displays / Dis-
plays chapter Ä Chapter 1.5.3.1.1.8 “State LEDs” on page 592.
To avoid error messages from unused analog input channels, configure them as "unused".
Connection of passive-type Analog Sensors (Current) to the Analog Inputs
The following figure shows the connection of passive-type analog sensors (current) to the
analog input AI0. Proceed with the analog inputs AI1 to AI3 in the same way.
Device Specifications
I/O Modules > Digital/Analog I/O Modules
2019/04/17 3ADR010121, 13, en_US 579