HE 5840 HIMOD RTD input module 4 x RTD


The RTD input module HE 5840 acquires up to four analogue signals from resistance thermometers and transmits these to the higher-level bus system. The connection is carried out with 3-wire wiring technique. The communication with the bus coupler takes place over an asynchronous serial RS-485 connection. In the event of service, the module can be exchanged quickly and without complications in running operation (Hot Swap). The signal status of the inputs is indicated via status-LEDs. The areas of power supply voltage, field bus, logics and inputs are isolated galvanically from each other. In the event of error the modules operate with previously predefined error values, in order to ensure safe process control (Fail Safe).

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HE 5840 HIMOD RTD input module 4 x RTD
HE 5840 HIMOD RTD input module 4 x RTD
Block diagram
Block diagram