The device has 2 opto-isolated up to 2500Vrms digital inputs with common minus signal. The signal maximum voltage is 30V DC. Inputs support only DC signal with proper polarisation. The input digital high is from 3.5V to Vmax, and digital low from 0 to 2V. Inputs can be controlled also by open collector circuit with common positive. The input resistance is approx 2.7k. The input terminal diagram is as per below.
1+/2+ = digital input positive
1-/2- = digital input negative
If by mistake reverse polarity signal is connected to input the input will not work, but will not be damaged.
Digital input status
The status of the inputs can be checked in the tab info>state of input.
