conveyor belts for - Iberica de Automatismos

Lever Limit Switch HE-...- ZTechnical Data· Up to 4 contacts NC and 4 contacts NO· Snap action safety contacts with· forced-opening system· 2 cable ducts Pg16· Available with impact resistant· glass fibre reinforced polyester,· optional cast iron enclosure· Type of enclosure IP 65· EEX protected version available· Version with CSA (Canadian· Standard Association) approval· Automatic latching in actuated· position with manual resetLever Limit Switches are designed for signallingor cutting off at reached positions of linear orsviveling movements.MEYLE Lever Limit Switches of these types areequipped with an actuation lever which is pressedthrough an internal spring in its neutral position.When the roller of this actuation lever is movedagainst a cam or an actuation bar, the actuationlever is displaced from its neutral position to oneof the both possible sides (left or right) against theforce of the internal spring. At an displacementangle of 30° the commutation will happen in snapactioncharacteristic with a forced opening of theNC-contacts. When leaving the area of cam oractuation bar, the lever is turned back to itsneutral position through the force of the internalspring and resetting happens with snap action(except for version „R“. At this point the actuationlever will be latched in actuated positionautomatically. Release of this latching onlymanually direct at the switch).These switches can be equipped with up to 4switching elements. Each switching elementconsists of one contact NC and one contact NO.They are actuated either simultaneouslyindependent on the direction of displacement ofthe lever or they are actuated depending on thedirection (see „selection table). Commutation isbeing effected at a displacement angle of 30°. Themaximum displacement angle of roller lever is75°.The lever can be mounted in 4 positions on theshaft. The roller of the actuation lever is made ofpolyamide and is sleeve -beared on a stainlesssteel axle.The housing of this switch is made either ofcoloured, glass fibre reinforced polyester or ofcast iron (code „M“). Stability of the polyesterenclosure is comparable to that of cast ironenclosures. Polyester, however, is not so brittleand thus more resistant against shocks. Both aredust- and waterproof housings (conforming toIP65).The switches are guaranteed for an extendedworking life: The use of sealing rings protecting allducts out of the housing, shafts made of stainlessVA-steel, screws made of stainless VA-steel, lossprotectedlid screws.