Override Function - Omron F3SJ-A P Series User Manual

Override Function

The override function forcibly turns the safety outputs ON when the muting start condition is not
satisfied. If a workpiece stops while passing through the detection zone of the F3SJ, as shown below,
causing a muting error, the normal state cannot be recovered unless the workpiece is removed from
the muting sensors and the detection zone of the F3SJ. However, the override function will mute the
safety outputs of the F3SJ so that the conveyor can be restarted to move the workpiece out of the
muting sensors and F3SJ detection zone.
The override function can be enabled for up to 60s.
The muting lamp (external indicator) turns ON while overriding.
The muting and override functions disable the safety functions of the device. You must ensure safety
using other method when these functions are operating.
Muting lamps (external indicators) that indicate the state of the muting and override functions must be
installed where they are clearly visible to workers from all the operating positions.
Install the switch that uses hold-to-run device such as a spring-return key switch and is installed in a
location that provides a clear view of the entire hazardous area and where it cannot be activated from
within the hazardous area. Make sure that nobody is in the hazardous area before activating the

override function.

Override start conditions
If all of the following conditions are present in the F3SJ, the override function starts.
1. If either muting input 1 or 2 is ON (1 or more muting sensors are turned ON by a workpiece)
2. The F3SJ is blocked and the output is OFF
3. Under the conditions of 1 and 2 shown above, the reset input changes from ON to OFF and the test
input changes from OFF to ON at the same time. The changing time of these 2 inputs must be
300ms or less.
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F3SJ
B1
Workpiece
A1
F3SJ
System Configuration and Functions
Reflector
Reflector
E
F3SJ-A
43
User's Manual