Supplier News & New Products


4B Components Ltd. Introduces M800 Elite Speed Switch

Date Posted: June 19, 2013

Morton, IL—4B Components Ltd., a worldwide manufacturer of material handling and electronic components for bucket elevators and conveyors, announced June 19 it has developed a multi-voltage (24 -240 AC/DC) speed sensor to monitor rotating machinery for dangerous underspeed conditions.

The M800 Elite Speed Switch is designed to detect belt slip, belt underspeed, stop motion, low speed or zero speed on bucket elevators, conveyors, airlocks, mixers, fans, grinders and many other rotating machines.

Totally sealed and simple to calibrate, the M800 Elite works in the harshest of conditions.

An inductive sensing device located in the nose of the M800 Elite enclosure will detect a metal target.

This target can be an existing bolt head, or 4B’s patented Whirligig® fully guarded target and sensor mount.

The Whirligig is available with 1, 2, 4 or 8 pulse targets, and attaches to the rotating shaft by either a 1/2 inch tapped bolt hole or magnetically using 4B’s Mag-Con™ adapter.

During installation the M800 Elite is set to the normal machine shaft RPM by simple magnet calibration, allowing the internal microprocessor to set the alarm and shutdown relays.

The M800 Elite is available in two models, with alarm relays of either 5% or 10% and shutdown relays of 10% or 20%.

Both models can be programmed with a startup delay of up to 15 seconds, and are multi-voltage 24 - 240 volt AC/DC.

If required, the M800 Elite has an additional pulsed output, which can be connected to display actual shaft RPM on a PLC or speed display.

The M800 Elite is CSA class II division 1 groups E, F & G and IP67 approved for hazardous dust environments.

For more information, call 309-698-5611.

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