This product needs an independent power supply, each channel can be independently set to the input and output in phase or reverse control, and has function of input line fault detection alarm indication.
Dry contact or DIN19234 standard NAMUR proximity switch inpu t field devices (including the intrinsically safe type pressure switc h, temperature switches, liquid level switch).
Input and output characteristics If input > 2.1mA, output relay is energized, with yellow LED ON. If input < 1.2mA, output relay is de-energized,with yellow LED OFF.
Switch setting function Switch(I),K2 and K4 must be set to OFF state, no line fault (breakage, short circuit) detection; When using line fault (breakage, short circuit) detection function, resistors must be fitted, 22kΩ in parallel with switch, 680Ω in series with switch, see Switch (II), K2 and K4 set to ON state.