The new belt drift switch from ifm electronic is designed for heavy duty application and used for drift monitoring of conveyor belt installations. The belt drift switches are used to protect the installations from damage or destruction in the event of belt drift and are positioned in pairs on both sides of the conveyor belt. The ball bearing stainless steel actuating roller is resistant to wear and is used for belt speeds up to 5 m/s. The device features a robust aluminium housing and is equipped with two force-actuated changeover contacts with a snap-action function with two adjustable switching points.
Inadmissible belt drift occurs when the belt edge approaches the end of the supporting rollers through lateral movement and surpasses it. Then the actuator (roller lever) is operated and displaced. In case of displacement of the actuator, the cam operating switches are activated. The switching angle can be set via an adjustable camshaft. In this way, a pre-warning can be implemented in addition to the safety shutdown. As soon as the belt moves correctly, the roller lever will automatically return to its home position.
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