Digital input module HE 5820
Communication with the digital input module is via an asynchronous RS485 serial connection.
The fieldbus coupler provides a power supply of 24 V DC per input with a maximum current of 25 mA for the direct connection of proximity and position switches, for example.
The signal state of the digital inputs is indicated via status LEDs. The areas of supply voltage, fieldbus and logic are galvanically isolated from each other.
The following variants are available: potential-free / potential-containing contacts or 3-wire sensors (NPN or PNP transistors).