Reer JANUS Installation, Use And Maintenance Manual

Also see for JANUS: Quick installation guide

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Reer JANUS Installation, Use And Maintenance Manual Manual pdf 12 page image

8540573 • 16/09/2016 • Rev.20 11POSITIONINGProtection of the guarded opening by JANUS must be integrated with suitable mechanicalguards.While the "MI" model permits various types of installation (2, 4 sensors, one- or two-way), the"ML" and "MT" have been designed for "dedicated" use. In particular, "ML" manages the muting function in one-way mode (normally forpallet exit); in this case, the horizontal arms must be positioned between thedangerous area and the light curtain. The "MT" model manages the muting function in two-way mode using four horizontalarms. This model is useful when the pallets, once the process has been carried outby the dangerous machine, must be returned outside using the same palletizer.POSITIONING OF THE MUTING SENSORS ("MI" SERIES).2 sensorsThe Emitter and receiver of the light curtain must be positioned so as to permit access to thedangerous area from above, from below and from the sides without first of all intercepting at leastone of the optical beams.Indications for correct positioning of the light curtain are provided in the figure below.Figure 11For correct positioning of sensors 1 and 2, i.e. those that manage enabling and disabling of theMuting function, take into account the following: the two beams must be crossed and pass diagonally through the zone guarded bythe light curtain; the point of intersection of the two beams must be in the dangerous area beyondthe light curtain; the angle between the two Muting beams must be calculated according to the size ofthe pallet and its speed, taking into account that the Muting function is activated onlyif the interception delay between the two sensors is less than 4 seconds; the pallet must interrupt the two beams before intercepting the light curtain; the two beams must be interrupted continuously by the pallet for the entire periodduring which the pallet passes between the sensors; make sure that the two beams are effectively intercepted by the material on the palletand not by the empty pallet; the zone identified by the points of interception and clearing of the beams of sensors1 and 2 by pallet must be limited as far as possible (or suitably protected) so asS1 = Sensor 1S2 = Sensor 2R1 = Reflector 1 (or Receiver 1)R2 = Reflector 2 (or Receiver 2)B = Light curtainMaterialDangerous area