Connection of active-type analog sensors (current) with electrically \ isolated power supply to the analog inputs

The following figure shows the connection of active-type analog sensors (current) with electrically isolated power supply to the analog input AI0. Proceed with the analog inputs AI1 to AI3 in the same way.

The following measuring ranges can be configured CI501-PNIO CI501-PNIO:

Current	0…20 mA	1 channel used
Current	4…20 mA	1 channel used

The function of the LEDs is described under Diagnosis and displays / Displays CI501-PNIO.

Unused input channels can be left open-circuited, because they are of low resistance.

To avoid error messages through unused analog input channels in measuring range 4…20 mA, these channels should be configured as “Not used”.