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Muting
Muting temporarily disables
safety functions when workpieces, conveyance pallets, or other items pass
into the Safety Sensor detection zone.
Note: Refer to the definition
in international standard IEC61496-1 (JIS B9704-1), 3-16 Muting: A
temporary automatic suspension of a safety function(s) by safety-related
parts of the control system.
Connect Two
Safety Sensors (Maximum)
Using two Safety Sensors is
ideal for line loading and unloading areas.
Muting Lamp
Output
It is essential to install a Muting Lamp to notify workers in the area when the muting function is in effect. The F3SP-U2P has a built-in diagnostic function with which errors such as burned
out Muting Lamp bulbs are detected by means of the current to disable the muting function.
Compliance with Safety Category 4
Safety Category 4 can be complied with by connecting to type 4 sensors, such as the F3SN-A, F3SH, F3SL, or F3SS. Connecting to a type 2 sensor, such as the F3SN-B, complies with Safety Category 2.
Complies with International Standards
EC Directive compliance has been certified by TÜV Product Service, an independent German certification body. (CE marking)
Either Two or Four Muting Sensors per Safety Sensor
The sensors that determine the timing of muting to distinguish between workpieces and humans are the Muting Sensors. Either of the following two installation methods can be used. With the first method, they are installed so that the optical axes of two through-beam or retroflective photoelectric sensors cross. With the other method, four through-beam or retroflective
photoelectric sensors are installed and, in parallel with the safety sensors, proximity sensors or limit switches are installed, two each front and back. The muting sensor output must be a PNP transistor or NO contact output.
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