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Sensor for Iron & Steel IndustryClose Crane Warning

Detecting accuracy is high because of geometrical setting system



-> This is a microwave overhead traveling close crane warning device. Consisting of two sets of transmitter/receiver installed oppositely, when two cranes approach each other until the both detecting areas overlap, the microwave of the opposite side is mutually detected, and an alarm signal is executed.


Model No. MBX-211
Power source 100 to 110VAC/200 to 220VAC(±10%, 50/60Hz)
Current consumption 3.5VA or less
Detecting range 0 to 20m when installing angle is 20°(Recommended)
10 to 40m when installing angle is 45°(Max.)
Hysteresis 15% or less of detecting distance
Control output 1C relay contact(250VAC 5A, 30VDC 5A, cosφ=1)
Response time 50msec or less(400msec or less when returned)
Alarm output* 1C relay contact(250VAC 5A, 30VDC 5A, cosφ=1)
Indication lamps Power, operation, trouble(Normal, transmission trouble, reception trouble)
Sensitivity adjuster Course adjuster : 5 steps(10dB), fine adjuster : 10dB
Connection M4 screw terminal, applicable wire 3.5mm2
Ambient temperature/humidity -10 degrees C to +55 degrees C, 45 to 85%RH
Vibration resistance 10 to 55Hz Double amplitude 1.5mm Each 2 hour in X, Y and Z directions
Impact resistance 196m/s2 (20G) Each 10 time in X, Y and Z directions
Case Steel plate
Weight Approx. 12kg
* In case that reception level is lowered to 1/4, it is executed after approx. 10 sec.
Note) If using it outside, it may malfunction because trouble output would be executed by heavy rain or typhoon. Use the rain-proof cover as option.

External dimension

External dimension

External dimension

I/O Circuit


Control output
Terminal No. 6-7 7-8
Power-OFF state OPEN CLOSE
Power-ON state When non-detection CLOSE OPEN
When detection OPEN CLOSE

Trouble output
Terminal No. 9-10 10-11
Power-OFF state CLOSE OPEN
Power-ON state When normal OPEN CLOSE
When troubled CLOSE OPEN


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