Panasonic SF4D Series, Instruction Manual

Page: 129 / 176

Maintenance
© Panasonic Industrial Devices SUNX Co., Ltd. 2017 129
4-2 Periodic Inspection (Every Six Months)
WARNING
Be sure to inspect the following items every six months and verify that there are no abnormalities.
Risk of death or serious injury if inspection is neglected or the device is operated with an abnormal
condition.
Checklist (periodic inspection)
Check column Inspection item
□
The structure of the machine does not obstruct any safety mechanisms for stopping operation.
□ No modification has been made in the machine control system that obstructs the safety mechanisms.
□ Output from the device is correctly detected.
□ Wiring from the device is correct.
□ The response time of the overall system is equal to or less than the calculated value.
□
The current number of operation cycles (time) of parts with a limited service life is less than the
number of service life cycles (time).
□ No screws or connectors related to the device are loose.
□ No objects that scatter or reflect light have been added near the device.
4-3 Inspection after Maintenance
In the situations below, inspect all items listed in “4-1 Daily Inspection” and “4-2 Periodic
Inspection (Every Six Months)” .
1) When any parts of the device are replaced.
2) When an abnormal condition is noticed during operation.
3) After aligning the beam axes of the emitter and receiver.
4) When the installation site or environment of the device is changed.
5) When the wiring method or wiring layout is changed.
6) When a safety relay unit or external device (forcible guide relay or magnetic conductor)
part has been replaced.
7) When safety controller or safety PLC settings are changed.