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Chapter2 Description of Functions
F3SJ-E/B
User’s Manual
System Configuration and Functions
Using muting function
Turning muting inputs 1 and 2 ON sequentially enables muting function.
When a muting lamp is required as a result of a risk assessment, connect a muting lamp to the
auxiliary output line.
<Start conditions>
If both of the following conditions are present for the F3SJ-B, muting is activated.
1. No interrupting object is found in the F3SJ-B's detection zone, and safety output is ON.
2. After muting input 1 is turned ON (connected to Vs-3 V to Vs), muting input 2 is turned ON
(connected to Vs-3 V to Vs) within the muting input time limit of T1min to T1max (0.1 to 3 s).
Muting function can be enabled in up to 0.15 s after condition 2 is satisfied. When condition 1 is
satisfied but time condition of 2 is not, a muting sequence error occurs and emitter's muting error
indicator blinks. However, when there is a muting error, the F3SJ-B safety function operates and
normal operation continues.
For muting error indication, see page 121 .
Muting error can be released by any of following conditions:
1. Correct muting initial condition continues for 0.1 s or longer. *1
2. Power cycle under muting input 1 and 2 OFF state.
*1. The correct initial muting condition is shown as follows.
• Safety output of the light curtain is ON.
• Muting input 1 and 2 are OFF.
<End conditions>
If either of the following conditions is satisfied, the muting state is released.
1. Muting input 1 or 2 turns OFF for T3 (0.1 s) or longer.
2. The muting continuation time exceeds the muting time limit of T2 (60 s).
F3SJ-B Unblocked
/Blocked
Muting input 1
ON
OFF
Muting input 2
Muting state
Safety output
ON
OFF
Unblocked
Blocked
ON
OFF
Blinking
OFF
Auxiliary output
Enabled
Disabled
T2 max.
1 Hz Blinking
T3 max.
T3 max.
T1min to T1max
0.15 s max.
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