2-5 Functions
2-5-1 Self-diagnosis Function
This device is equipped with a self-diagnosis function.
Self-diagnosis is carried out when the power is on and periodically during operation.
In case an abnormality is discovered during self-diagnosis, the device is put in the lockout
state at that instant, and the control output (OSSD 1, OSSD 2) is fixed at the OFF state. Refer
to ‘
Chapter 5 Troubleshooting
’, and rectify the cause of the abnormality.
2-5-2 Emission Halt Function
This function stops the emission process of the emitter.
Emission halt state is achieved when the emission halt input is open or connected to the 0 to
+1.5V.
During emission halt, the control output (OSSD 1, OSSD 2) turns OFF state.
By using this function, malfunction due to extraneous noise, or abnormality in the control
output (OSSD 1, OSSD 2) and the auxiliary output, can be detected even from the equipment
side.
Normal operation is restored when the emission halt input is connected to the +9V to Vs.
Notes: 1) Vs is the same voltage as the voltage of the power supply to be used.
2) In case of series connection, 20ms or less.
Do not use the emission halt function for the purpose of stopping the equipment.
There is a danger of serious injury or death.
© Panasonic Industrial Devices SUNX Co., Ltd. 2013 MJE-SF4A No.0038-55V
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Summary of Contents for SF4-AH Series
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