Section 5 Maintenance; Daily Inspections; Inspections Every Six Months - Omron F3SN-B P Series Instruction Manual

Section 5 Maintenance

Section 5 Maintenance
Do not use the F3SN-B until the following inspections are completed. Failure to do so may result in loss of life or serious
injury.
Do not disassemble, repair or modify the F3SN-B.
For safety, be sure to record and store inspection results.
[Note]:
Make sure you are thoroughly familiar with the F3SN-B and the machine prior to conduction an
inspection.
If the installer, design technician and user are different individuals, make sure the user has
adequate guidelines for performing maintenance.

5-1 Daily Inspections

Be sure to inspect the following items at the start of work or after a shift change.
1. No instruction paths into dangerous machine parts expect through the F3SN-B detection zone.
2. Some part of the operator's body remains in the F3SN-B detection zone at all times while working in
dangerous machine parts.
3. The actual safety distance is greater than the calculated distance.
4. No dirt or scratches on the optical surface or the spatter protection cover (the F39-HN, optional) of the
F3SN-B.
5. A test rod is not deformed.
6. Confirm nothing is present in the detection zone, then turn on the power of F3SN-B.
When the auto reset mode is used: The power indicator and the ON-state indicator are lit within one second
after turning ON the power.
When the manual reset mode is used: The power indicator
and the OFF-state indicator are lit within one second
after turning ON the power.
7. The test rod can be detected when guiding it
through detection zone as shown in the figure.
In other words, all the light intensity level indicators
go off and the OFF-state indicator remains lit
when the test rod is inserted into the detection zone.
Operate the machine and check to see if the dangerous part stops under the conditions below.
8. The dangerous part moves when there is nothing in the detection zone.
9. The dangerous part stops immediately when the test rod is inserted into the detection zone directly in
front of the emitter, directly in front of the receiver and midway between the emitter and receiver. (Use the
correct test rod)
10. The dangerous part remains stopped as long as the test rod is present in the detection zone.
11. The dangerous part remains stopped when the F3SN-B power supply is turned OFF.

5-2 Inspections Every Six Months

Inspect the following items every six months or when a machine setting is changed.
1. Machine structure does not hinder stop and other safety functions.
2. There is no machine modification or connection change that will adversely affect the control system.
3. F3SN-B outputs are correctly wired to the machine.
4. The actual overall response time of the machine is less than the calculated response time.
5. The control relay and/or contactor are good condition.
6. The screws for brackets are secured tightly.
7. There is no interference light.
B-28
WARNING