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Chapter7 Maintenance Checklists
F3SG-SR
User’s Manual
Checklists
The test rod is detected when it is moved around in the detection zone as shown in the diagram
below.
In other words, when a test rod is inserted into the detection zone, the OSSD indicator turns red.
When the Fixed Blanking function is used, you must ensure that all blanked zones in the detection
zone are covered by a hard barrier guard and there must be no zone in the detection zone where the
test rod goes undetected.
The object resolution may vary depending on the models of the F3SG-SR and settings of the Floating
Blanking function or Reduced Resolution function. Use a test rod with an appropriate diameter for
inspection. A test rod is not included in the F3SG-SR product package.
When the Muting function is used, installation condition of muting sensor must not be changed.
When the Muting function is used, the MUTING state can be checked from where a worker operates
or adjust the machine.
Neither connector, cap, or bracket must be loose.
7-2-1-2. Checking that Hazardous Parts Stop While the Machine Operates
The hazardous parts are movable when nothing is in the detection zone.
The hazardous parts stop immediately when a test rod is inserted into the detection zone at 3
positions: "directly in front of the emitter", "directly in front of the receiver", and "between the emitter
and receiver". (Use the appropriate test rod.)
The hazardous parts remain stopped as long as the test rod is in the detection zone.
The hazardous parts stop when the power of the F3SG-SR is turned OFF while nothing is in the
detection zone.
7-2-1-3. Items to Inspect Every 6 Months or When Machine Settings Are Changed
In addition to inspection item at operation start, following items must also be verified.
The outputs of the F3SG-SR and the machine are properly wired.
The total number of times that the control relays/contactors have switched is significantly lower than
their design lives.
There is no ambient light.
Safety distance has been calculated with changed object resolution when the setting of the Floating
Blanking or Reduced Resolution function is changed.
Calculated distance: S = ( )mm
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