Panasonic SF4-AH Series, Instruction Manual

Page: 57 / 80

<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 1 to 2
Pulse width (width of 1 in the figure) [ μ s] ... 3 100
Total number pf pulse width / A ms (product of 2 and 3) 200 max.
Width of 4 in the figure [ μ s] 250 to 400
© Panasonic Industrial Devices SUNX Co., Ltd. 2013 MJE-SF4A No.0038-55V
- 57 -