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F3SP-U4P-TGR
User's manual
25
9 FINAL
CHECKS.
Check that the area protected by the safety light curtain is free from any
obstacle; check the correct triggering of the output contacts opening by
interrupting the protection rays (red LED switched on, controlled machine
stopped).
CAUTION! If the red LED switches on and off, check the correct mechanical
installation.
NOTE.
This check must be repeated each time you move or
mechanically re-align the safety light curtains and muting sensors.
10 ROUTINE MAINTENANCE.
Be sure to conduct inspection checks as below regularly.
•
Check that there is no person in the hazardous area before operator
turns ON the power.
•
Check that the unit locks by inserting a moving object through the
detection zone.
•
By opening the test contact, check that the output contacts are opened
(red LED switched on and machine stopped).
•
Make sure that the access to the hazardous areas is not possible from
any non-protected area and that the minimum distance from the safety
light curtain to the hazardous part is not less than the result calculated
with reference to the formula reported at paragraph 4.1.
•
Make sure the installation satisfies one of following conditions;
1) The machine connected to the control unit has an interlock function.
2) The controller uses interlock mode.
3) It is not possible for a person to stop between the safety light curtain
and the hazardous parts of the machine.
•
Make sure that there is no outer damage to the safety light curtain
and/or the outer electrical connections.
•
Make sure that the response time, including the safety light curtain and
the machines, does not exceed the established limits.
•
If failure occurs, all functions of the control unit shall be tested.
The frequency of these operations depends on the special applications and
operative conditions.