5 Connection 5.1 Wiring recommendations To ensure the reliability of electrical connections it is recommended to use copper stranded cables, the ends of which should be carefully cleaned and tinned. Otherwise use cable lugs before connection. Cable conductors should be stripped so that their bare ends do not protrude beyond the terminal strip after connecting to the device. The cable cross section must be not more than 1 mm 2 . General requirements for connection lines:
• During the cabling, communication lines that connect the Device with sensors must be isolated to a separate circuit (or several circuits) and placed separately from power cables or other sources of high-frequency and impulse interferences; • To protect the Device inputs from the effects of industrial electromagnetic interference, the communication lines between Device and sensors should be shielded. Special cables with shielding or grounded steel pipes of suitable diameter can be used.
The cable shielding should be connected to the functional ground terminal (FE) in the control panel; • Network interference filters should be installed in the power supply lines; • Spark-fighting filters should be installed in the switching lines of power equipment. When installing the system in which the Device operates, you should follow the rules for effective grounding: • all grounding lines must be laid in Y-connected circuit, ensuring good contact with the grounding element; • all earthing circuits must be made with wires of the largest possible cross-section; • it is forbidden to connect the device terminal "Common" with grounding lines. 19