Connection of Active-type Analog Sensors (Voltage) with no Electrically \ Isolated Power Supply to the Analog Inputs

The following figure shows the connection of active-type analog sensors (voltage) with no electrically isolated power supply to the analog input AI0. Proceed with the analog inputs AI1 to AI3 in the same way.

Connection of active-type sensors (voltage) with no electrically isolated power supply to the analog inputs

Caution

:strong:Risk of faulty measurements!

The minus pole at the sensors must not have a too big potential difference with respect to ZP (max. ± 1 V).

Make sure that the potential difference never exceeds ± 1 V (also not with long cable lengths).

The following measuring ranges can be configured CI521-MODTCP and CI521-MODTCP.

Voltage	0…10 V	1 channel used
Voltage	-10 V…+10 V	1 channel used

The function of the LEDs is described under Diagnosis and displays / Displays CI521-MODTCP.

To avoid error messages from unused analog input channels, configure them as “unused”.