Dold Speed Monitoring Relay, DPDT, DIN Rail / 1812788

Detection of high or low-rpm / stand still (adjustable function) Large setting range 1 .. 120.000 IPM or 0.15 .. 20.000 Hz (10 ranges each) As option with input for NAMUR-sensors with sensor and wire protection against interruption and short circuit Adjustable hysteresis 0.5 .. 50 % Adjustable start up time delay 0 .. 50 s, control with external contact Adjustable monitoring time for missing input signal at function over frequency, additional using as standstill level Programmable via terminals: Alarm delay of 0 .. 100 s with manual reset or auto reset LED-indication for auxiliary voltage, measuring input and output relay, additional LED for indication of wire- / sensor failure at NAMUR-input Auxiliary voltages AC 230 V and DC 24 V in one unit 2 changeover contacts, closed circuit operation Open circuit operation on request As option with analogue output, proportionally to speed Device available with 2 response values and separately controlled output relays for under- and over frequency see MK 9055N/5_ _ MH 9055 with wide input range for auxiliary voltage (AC/DC 24 .. 60 V or AC/DC 110 .. 230 V)