Panasonic SF4-AH Series Instruction Manual page 57

<Output waveform [when control output (OSSD 1, OSSD 2) is ON]>
When the sensor is in the beam received condition (ON state), the receiver self-diagnosis the
output circuit. For this purpose, the output transistor goes to the OFF state periodically.
(Refer to the figure below.)
If the OFF signal is fed back, the receiver judges the output circuit as normal. If the OFF
signal is not fed back, the receiver judges that the output circuit or the wiring is abnormal, and
the control output (OSSD 1, OSSD 2) is maintained in the OFF state.
Take care of the input response time of the equipment connected to the sensor,
since there is a possibility of the equipment malfunctioning due to the device OFF
si gnal.
Number of pulses (number of 1's in the figure) in A ms ... 2
Pulse width (width of 1 in the figure) [μs] ... 3
Total number pf pulse width / A ms (product of 2 and 3)
Width of 4 in the figure [μs]
© Panasonic Industrial Devices SUNX Co., Ltd. 2013 MJE-SF4A No.0038-55V
1 to 2
100
200 max.
250 to 400
- 57 -