Model CMS Zero Speed Control Switch

Model CMS Zero Speed Control Switch is a direct drive control that indicates when rotating equipment has ceased to turn. The output contacts can control up to two separate circuits, one for machinery shutdown and one for an alarm. Model CMS provides a means of protection to prevent compound damage from inoperative or failed equipment due to a lack of rotation.

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Description

The Model CMS Zero Speed Control Switch protects all valuable rotating equipment including belt conveyors, bucket elevators, rotary feeders, or screw conveyors. It operates in either a clockwise or counterclockwise direction and mounts in any position.

Specifications

Housing is cast aluminum with optional epoxy or polyester powder coating (for additional corrosion resistance).
Unit can be connected to rotating equipment by means of a stub shaft and flexible coupling.
Unit is mounted on the conveyor by drilling (4) 5/16″ diameter holes.
General purpose (weatherproof) units and explosion proof units have (2) 3/4″ NPT conduit openings.
Standard unit has 120 VAC power input (120 VAC transformer); optional 240 VAC power input (240 VAC transformer) and 24V AC/DC (transformer-less) available upon request.
Unit has a dry, unpowered DP/DT relay rated for 3A @ 120 VAC, 240 VAC, and 480 VAC.
Uunit is bi-directional, it will detect motion or loss of motion in either direction.
Standard unit has a 12 segment brass encoder disk. A special 50 segment brass encoder disk can be supplied for low RPM applications (5 RPM or less). Specify “-50”.
Operating temperature class is T6 (85°C [185°F]).
Maximum ambient temperature is 55°C [131°F].
Maximum operating speed is 1000 RPM.
General purpose units are rated NEMA Type 4/4X weatherproof and corrosion-resistant, and explosion proof units are rated NEMA Type 7/9 for vapor explosion proof and dust ignition proof (Class I, Div 1, Groups C & D; Class II, Div 1, Groups F & G).
General purpose controls are IP65 compliant.

Model CMS Zero Speed Control Switch