Now available from NHP Electrical Engineering Products , the ZS 73 series of belt-alignment switches are an important monitoring system for conveyors.
Belt-alignment switches are actuated by a roller which is moved sideways when the conveyor belt it sweeps moves off-track. When the belt-alignment switch is actuated a warning signal can then be transmitted to a control room, or the belt can be switched off, thus limiting the damage caused to a conveyor system by skewing.
The ZS 73 SR series of belt-alignment switches are reliable and robust even in harsh conditions. A metal enclosure protects the switching element from mechanical influences, while the belt-alignment roller, made of 1.4104 stainless steel, is resistant to both chemicals and corrosion. Users can swap between push-button or key release options, plus the ZS 73 SR belt-alignment switch is now available with staggered contacts.
With staggered contacts, if the belt skews just slightly, the belt-alignment switch will be actuated at a first level. The first of two contacts will be triggered, causing a warning signal to be transmitted. If the belt operator does nothing and the belt skews further, the second contact will actuate automatically, taking a direct effect on the belt controls. Either the belt will be brought to a standstill or the second contact will trigger a belt correction function, returning the belt to its correct central position.
The ZS 73 SR belt-alignment switch with staggered contacts allow operators of conveyor systems to prevent downtime periods and ensure their systems remain deployable.