3) When an error occurs
If a sensor error is detected, the sensor will turn the control output (OSSD 1, OSSD 2) off and
the fault indicator (yellow) will light up or blink.
If an emitter error is detected, the emitter will be locked out, stopping its emission, and
the control output (OSSD 1, OSSD 2) will turn OFF.
If a receiver error is detected, the receiver will be locked out, and the control output
(OSSD 1, OSSD 2) will be in OFF state. Also, the emission halt / emission intensity
control indicator (orange) of the emitter will blink.
<Emitter> <Receiver>
Note: Since the color of the operation indicator changes according to the ON / OFF state of the control output
(OSSD 1, OSSD 2), the operation indicator is marked as OSSD on the sensor.
Since this device will not return to normal operation automatically after the removal of the
source of error, it is necessary to turn the power off and on again.
(Source of error): The control output (OSSD 1, OSSD 2) short-circuit, extraneous light
detection, sensor failure, etc.
Refer to ‘
Chapter 5 Troubleshooting
’ and remove the source of error.
4) When receiving unstable light
If the emission halt / emission intensity control indicator (green) turns off, it indicates that the
sensor is in an unstable beam received condition such as dirt on the sensing surface or slight
misalignment of the beam axis, etc.
In such cases, clean the sensing surface or realign the beam axis.
© 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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