ZG3 series
11
The input current of ZG3 series is supplied by internal 24V power supply. If using external power
supply to drive the optical-electricity sensor, the supplier should be DC24V±4V. The output
transistor of sensor should be NPN open collector.
Input points
Connect input point and com point with non-voltage point or NPN open collector transistor to
turn on the input.
Input loop
The first loop and the second loop are insulated by optical coupler, the second loop has C-R
filter which can prevent wrong action caused by industry noise or input points oscillation. As
the result, there will be a response delay for 10ms to the input points. There is digital filter in
the input points.
Input sensitivity
Input current is DC 24V 7mA. To make the input reliable, the ON current should be above
3.5mA, the OFF current should be below 1.5mA.
DC power
DC24V
power supply
R3
R4
R2
R1
X*7
X*0
COM
+5V
R5R6
LED
I=7mA
sensor
supply
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