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4-3 Operating Mode Selection
and then the operator must press and release the Start button. In the machine run state, when an object is
sensed entering the detection zone the F3SL system will change from machine run to interlock. The F3SL sys-
tem will remain in the interlock state even after the obstruction is removed from the detection zone. To enter the
machine run state, the operator must press and release the start button. If any obstruction is present in the de-
tection zone when the start button is pressed and released, the F3SL system will remain in the interlock state.
Note: The definitions above mention a start button. See Section 10–"Connecting To The Machine Control Cir-
cuit" for wiring of the start button.
Perimeter guarding installations must not allow a machine or robot to restart automatically. Use a start switch
placed outside and within view of the hazardous area.
4-3 Operating Mode Selection
Operating mode is selected by setting positions 1 and 2 of Switches A and B, located inside the receiver end
cap. Refer to Table 4-1. Any mismatch between the settings of Switch A and B will result in an alarm condition.
To access Switches A and B, remove the four captive screws which secure the largest receiver end cap. Set
these switches before mounting the recieiver.
Disconnect power before removing end caps.
Table 4-1 Operating Mode Switch Settings
OPERATING MODE
Automatic Start (default setting)
Start interlock
Start/Restart interlock
Not Allowed
WARNING
WARNING
SWITCH A
1
2
ON
ON
OFF
ON
OFF
OFF
ON
OFF
4 System Operation
SWITCH B
1
2
ON
ON
OFF
ON
OFF
OFF
ON
OFF
7
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