M800 Elite Speed Switch


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 device attached to a shaft.  During installation the M800 Elite is set to the normal machine shaft RPM by calibrating with the magnet provided.  The internal microprocessor sets the alarm and shutdown relays.  Two M800 Elite models are available:


Model M8001V10C (standard version) may be used either as a dual trip unit with an alarm at 10% below set speed and a shutdown signal at 20% below set speed, or a single trip giving a shutdown signal at 20%. 


Model M8002V10C may be used either as a dual trip unit with an alarm at 5% below set speed and a shutdown signal at 10% below set speed, or a single trip giving a shutdown signal at 10%. 


A simple calibration facility allows either model to be programmed to give a start up delay of up to 15 seconds, while simultaneously calibrating for normal running speed.  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.



  M800 Elite Speed Switch  

• Microprocessor Controlled Speed Switch


• LED Indication


• Non-Contacting and Fail-Safe


• Totally Sealed Construction (Submersible)


• Dual Set Points for Alarm and Shutdown


• Universal Voltage (24 - 240 VAC/VDC)

  Product Questions? (309) 698-5611Phone or Email  Email    
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  M800 Elite Technical Specifications:   Literature:  
  • Power Supply - 24 to 240 VAC/VDC (Universal Voltage Supply)   Product Datasheet Download PDF  
  • Power Consumption - 6 VA   Full Line Product Catalog Download PDF  
  • Fuse - 5 amp Maximum   (See Downloads for more literature)  
  • Speed Range - 10 to 3,600 PPM (Pulses Per Minute)      
  • Sensing Range - 11/32 in. (9 mm) Max. Ferrous Target   Technical:  
                                    7/32 in. (6 mm) Max. Non-Ferrous Target   Product Manual Download PDF  
  • Start Up Delay - User Selectable 0 to 15 Seconds      
  • Operating Temperature -13°F (-25°C) to 158°F (70°C)   Product Dimensions:  
  • Calibration - Magnetic   Download AutoCAD .dwg (AutoCAD)      Download PDF .pdf  
  • Trip Point - 10% Underspeed Alarm, 20% Underspeed Shutdown      
                          Alternate 5% Alarm and 10% Shutdown Available      
  • Outputs - 1. Normally Open Contact Closing When Speed Falls by      
                          10% (M8001V10C) or 5% (M8002V10C)      
                      2. Normally Open Contact Closing on Power Up, Opening When      
                          Speed Falls by 20% (M8001V10C) or 10% (M8002V10C)      
                      3. Tacho Output Opto-Isolated to 30 VDC, 100 mA Maximum      
  • LED Indicator - Red LED indicated Input Pulses. Green LED Shows Output      
                                at Nominal Speed and Acts as Calibration Aid      
  • Cable - 6 ft. (2 m) 8 Conductor      
  • Protection - IP67      
  • CSA Class II Div 1 Groups E, F & G (U.S. & Canada)      
  • ATEX Version Available      
  CSA - USA & Canada ATEX - Europe CE - Europe       
  Part Numbers and Accessories:      
  • M8001V10C ~ M800 Elite Speed Switch (10% and 20%)      
  • M8002V10C ~ M800 Elite Speed Switch (5% and 10%)      
  • WG1-4B-4 ~ Whirligig® Shaft Sensor Mount      
  • MAG2000 ~ Mag-Con™ Magnetic Connector for Whirligig      
  • TACH3V5 ~ Tacho Display      
  • SM2 ~ SpeedMaster™      
  Literature:   Product Dimensions:  
  Product Datasheet Download PDF   Download AutoCAD .dwg (AutoCAD)      Download PDF .pdf  
  Full Line Product Catalog Download PDF      
      Case Studies:  
  Technical:   Hazard Monitoring Overview - GEAPS Download PDF  
  Product Manual Download PDF      
  Enhanced Speed Monitoring Download PDF      
  Note: Product manuals for older part numbers can be      
  found under the Technical Support area.      

Whirligig® - Shaft Sensor Mount

The Whirligig is a fully guarded target for easy mounting of motion sensors. It is a universal shaft sensor mount suitable for all industry standard cylindrical or DIN style inductive sensors.  The Whirligig is available with 1, 2, 4 or 8 pulse targets, and attaches to the machines shaft by a 1/2 in. tapped hole or magnetically using the Mag-Con™ adapter.

See Whirligig

SpeedMaster Speed Switch Tester

SpeedMaster™ Speed Switch Tester

The SpeedMaster™ with Pulse Pilot is the only device that accurately tests the calibration of a speed switch, and allows testing of the alarm and shutdown features of the sensor while installed on the machine shaft.

More Info

Tacho Display

Tacho Display

The Tacho is a low cost electronic display which can be user programmed to indicate speed, distance or time intervals.

See Tacho

  What voltage is needed for the M800 Elite?  
  The M800 Elite is universal voltage 24 - 240 VAC/VDC.  
  How do you calibrated the M800 Elite?  
  The M800 Elite is calibrated with a magnetic using the calibration point on the front of the sensor, please refer  
  to the operation manual for details.  
  When will the M800 Elite alarm and/or shut down the machine it is monitoring?  
  The M800 Elite will provide an alarm at 10% underspeed and can provide an automatic shutdown at 20%.  
  Are the relays always open or closed?  
  The 10% relay is open when running and the 20% relay is closed when running.  
  Why is the M800 Elite not working when mounting to the Whirligig?  
  There are two sets of holes in the base plate of the Whirligig, be sure to use the top holes to mount the M800 Elite  
  flush to the Whirligig guard and target.  
M800 Elite Speed Switch
Whirligig on Bearing
Whirligig on Bucket Elevator
Whirligig on Conveyor
M800 Elite Speed Switch Intro.
M800 Elite Speed Switch Install Guide
M800 Elite Speed Switch Commissioning & Testing
M800 Elite Speed Switch Tips & Tricks
SpeedMaster (SM2) Sensor & System Tester