Operator Interfaces, Switches & Relays


Rope-pull safety switches

September 2001 Operator Interfaces, Switches & Relays

Banner is offering emergency-stop rope-pull safety switches, positive-opening mechanical switches that connect to cables to provide multiple-location emergency shutdown capabilities. Rope-pull safety switches, safety devices according to IEC947-5-1 and VCD 0660, T200 are suitable for use along conveyor lines or around the perimeter of large manufacturing machines. Rope-pull safety switches save critical time in emergencies by providing a means of shutting down the machinery at any point along the cable's length.

The new switches, actuated by pulling on a cable attached to the actuator, are available in auto reset (spring reset) and latching output (manual reset) models for one or two-side spans. Auto reset models reset their contacts automatically when the cable is released. Latching output models hold their stop contacts open after the cable is pulled and released, requiring users to push a reset button on the switch before the machine can restart. Any cable breakage will also activate the safety switches.

The switches are housed in die-cast steel and can accommodate cables measuring up to 100 m, providing an economical alternative to wiring numerous emergency stop buttons along the entire length of a machine. All models feature rope failure monitoring. Rope-pull safety switches withstand harsh environments and have an estimated mechanical life of one million operations. They are UL approved, CSA certified and rated IP65.



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