M100 Stopswitch


The M100 Stopswitch is a simple inductive shaft speed monitoring device. The self-contained unit has a single set point, which signals when the shaft has stopped rotating. It can be used for process control, motion detection and stopped shaft indication.


An inductive sensing device located in the nose of the M100 enclosure will detect a metal target. This target can be an existing bolt head or device attached to a shaft. The M100 Stopswitch requires no calibration and provides an output when the shaft has stopped rotating.



  M100 Stopswitch  

• Stopped Motion Monitor


• Inductive Proximity Sensor


• Single Trip Set Point


• Totally Sealed Construction (Submersible)


• Non-Contacting and Fail-Safe



  Product Questions? (309) 698-5611Phone or Email  Email    
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  M100 Stopswitch Technical Specifications:   Literature:  
  • Power Supply - 24 to 240 VAC/VDC   Product Datasheet Download PDF  
  • Output - Triac, Normally Closed Above Minimum Input Speed   Full Line Product Catalog Download PDF  
                    Normally Open at Stopped Motion   (See Downloads for more literature)  
  • Switching Capacity - 200 mA Max.      
  • Saturation Voltage - 8 Volts Max. (Output On)   Technical:  
  • Leakage Current - 1.6 mA Max. (Output Off)   Product Manual Download PDF  
  • Operating Temperature -13° F (-25° C) to 158° F (+70° C)      
  • Start Up Delay - 4 Seconds   Product Dimensions:  
  • Sensing Range - 5/16 in. (8 mm) Max. on Ferrous Metal   Download AutoCAD .dwg (AutoCAD)      Download PDF .pdf  
  • Input Pulse Range - 20 to 2,000 ppm      
  • Trip Point - Stopped Motion (4 Seconds)      
  • LED Indicator - RED "Target Sensed" / GREEN "Closed Circuit"      
  • Relative Humidity - 90% RH      
  • Calibration - Factory Set (No Calibration Required)      
  • Cable - 6 ft. (2 m) Two Conductor      
  • Protection - IP67      
  Warning WARNING: Do Not Use M100 Stopswitch for Belt Slip Applications      
  • CSA Class II Div. 1 Groups E, F & G (U.S. & Canada)      
  • ATEX Version Available      
  CSA - USA & Canada ATEX - Europe CE - Europe IECEx      
  Part Numbers and Accessories:      
  • M1001V10F ~ M100 Stopswitch      
  • A12NPT ~ 1/2 in NPT Conduit Adapter      
  • WG1-4B-4 ~ Whirligig® Shaft Sensor Mount      
  • MAG2000 ~ Mag-Con™ Magnetic Connector for Whirligig      
  • CDL1 ~ 2 Wire Load Device (110 VAC)      
  • CDL4 ~ 2 Wire Load Device (24 VDC)      
  Literature:   Product Dimensions:  
  Product Datasheet Download PDF   Download AutoCAD .dwg (AutoCAD)      Download PDF .pdf  
  Full Line Product Catalog Download PDF      
  Product Manual 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

Conduit Adapter

Conduit Adapter

The A12NPT conduit adapter is used to connect the metric threaded body of the sensor to 1/2 inch NPT conduit.

CDL1 Load Device

CDL1 & CDL4 Load Devices (2 Wire)

The CDL1 and CDL4 devices add additional loads to PLC inputs.  The CDL1 is for 110 VAC powered inputs, while the CDL4 (not pictured) is designed for 24 VDC (NPN and PNP type) low power inputs. Both devices can be used with the 2 wire M100 Stopswitch.

  In the product documentation, there is a reference to "load".  What is it and how big does it have to be?  
  Load refers to any item that pulls current (PLC input, ice cube relay, etc.) that you would like the M100 to switch on/off  
  and draws less than 200 mA.  
  When checking the 2 wire M300 with a voltage meter, it is always showing full voltage no matter if the shaft is turning  
  or not.  Why is the sensor not changing states?  
  The sensor will not function correctly until a load is connected to it, maximum current through the sensor is 200 mA..  
M100 Stopswitch
Whirligig Exploded View
Whirligig on Conveyor
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