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What is Muting?

Muting refers to the momentary bypassing of electro-sensitive protective equipment. This could be, for example, a light barrier or light curtain. The distinction between expected materials and unexpected objects or persons is made using corresponding muting sensors. When arranging the muting sensors, a distinction is made between cross-muting (fig. 1) and sequential muting (fig. 2). AS-i as a bus system makes it possible to easily, efficiently and cost-effectively implement the various muting arrangements.

Cross muting

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The arrangement of the two sensors with cross muting is crossed. They must both (S1 and S2) be activated simultaneously to initiate the muting cycle.

Sequential muting

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With a sequential arrangement, multiple sensors are connected one after the other; they must be activated or deactivated consecutively in a certain sequence.

Muting with Active Distributors

When it comes to muting the important thing is to consider the individual requirements in advance. It doesn't always make sense to bring all the signals to one point – for example when the sensors are too distant from each other. Bihl+Wiedemann also offers appropriate solutions for such applications – for example where active splitters are used. These collect the signals where they arise.

Safe input modules

  • 1 × 2 channel safe input (SIL3, PLe) 
    • Optoelectronic protective devices or
    • Floating contacts

Digital I/O modules

  • 2I/1O module

  • 4I, 4O or 4I/4O module

  • Connection of any sensors and actuators
  • Safety and standard AS-i slaves
  • Make standard sensors and actuators AS-i capable
  • Up to protection rating IP67
  • Extremely flat design (W × H × D: 60 × 45 × 19 mm)
  • To M12, M8, Push-In terminal or connecting wires
  • AS-i cable length: Cable between distributor and components does not have to be taken into account
  • Round cable length: 0,25 m, 0,6 m, 2 m, 5 m, or according to customer requirements

Installation in Cable Duct

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Compact design optimized for the cable duct, especially suitable for individual installation paths.

Drag & Drop Makes Configuration Simple

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  • First the user needs only to select whether he wants to use cross-muting or sequential muting and then specify the number and arrangement of the desired sensors (2 or 4).
  • Drag & Drop is used to insert and configure sensors, the start condition or override function in the release circuit.
  • The override function allows product to be moved out of the muting area.
  • Many additional settings such as “End of muting after the light barrier becomes free”, “Tolerated interruption time”, “Conveyor stop”, and various timing parameters.

Questions about our products and solutions?