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

The following figure shows the connection of active-type sensors (voltage) with no electrically isolated power supply.

Connection of active-type sensors (voltage) with no electrically isolated power supply

Caution

The minus pole at the sensors must not have a too big potential difference with respect to ZP (max. ± 1 V within the full signal range). Otherwise problems can occur concerning the common-mode input voltages of the involved analog inputs. Measurement faults will be caused.

The following measuring ranges can be configured EtherCATâ Bus Module CI511-ETHCAT EtherCATâ Bus Module CI511-ETHCAT:

Voltage	0…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 Diagnosis and Displays / Displays EtherCATâ Bus Module CI511-ETHCAT.

In order to avoid error messages or long processing times, it is useful to configure unused analog input channels as “unused”.