Speed Switches

4B's line of speed switch sensors include: proximity, inductive, zero speed, stop motion and rotech encoders to monitor dangerous belt slip, underspeed or stop conditions on conveyors, bucket elevators and any other shaft driven machinery. Our non-contacting sensors can be used to detect screw conveyor flights, elevator bucket bolts and other moving ferrous targets. Speed switches can be connected to a PLC or to one of 4B’s hazard monitory systems to provide alarm and/or shutdown of your machinery when dangerous conditions are detected.

Encoder-Flex 1024

• Outputs: 4-20 mA, Quadrature Pulse (Speed/Relative Rotation), 

  and RS485 Modbus RTU

• Sealed stainless steel enclosure

Whirligig®

• Fully Guarded Target for Easy Mounting of Motion Sensors

• Universal Application - Suits All DIN Style and Industry Standard

  Cylindrical Sensors

• Easy Installation - Only Requires 1/2" UNC Tapped Hole in the

  Machines Shaft or Use a Mag-Con™ for Magnetic Connection

• Available with 1, 2, 4 or 8 Targets

Milli-Speed Switch

• 4 - 20 mA Output

• Simple Magnetic Calibration

• Loop Powered (2 Wire)

• Totally Sealed Construction (Submersible)

• Easy Installation with Whirligig® Sensor Mount

• SpeedMaster™ Compatible for Accurate Testing

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)

M300 Slipswitch

• Microprocessor Controlled Underspeed Monitor

• Inductive Proximity Sensor (30 mm Diameter Housing)

• Single Set Point - 20% Underspeed

• 2 Wire & 5 Wire Versions

• Totally Sealed Construction (Submersible)

• Non-Contacting and Fail-Safe

M100 Stopswitch

• Stopped Motion Monitor

• Inductive Proximity Sensor

• Single Trip Set Point

• Totally Sealed Construction (Submersible)

• Non-Contacting and Fail-Safe

SpeedMaster™

• Speed Switch Calibration Testing

• Exact Alarm & Shutdown Point Testing

• No Need To Modify Sensor Assembly For Testing

Rotech Rotary Shaft Encoder - Stainless Steel

• Heavy Duty Rotary Shaft Encoder

• Monitor Speed, Distance, Direction, Belt Slip, Stop Condition

• 304 or 316 Stainless Steel Construction

• Totally Self Contained (No Guards Required)

• 1 to 1,000 Pulses Per Revolution

• Intrinsically Safe Version Available

Rotech Rotary Shaft Encoder - Aluminum

• Heavy Duty Rotary Shaft Encoder

• Monitor Speed, Distance, Direction, Belt Slip, Stop Condition

• Cast Aluminum Construction

• Totally Self Contained (No Guards Required)

• 1 to 1,000 Pulses Per Revolution

• Intrinsically Safe Version Available

Rotech Rotary Shaft Encoder - Polypropylene

• Economical Rotary Shaft Encoder

• Monitor Speed, Distance, Direction, Belt Slip, Stop Condition

• Polypropylene Construction

• Totally Self Contained (No Guards Required)

• 1 to 1,000 Pulses Per Revolution

• Intrinsically Safe Version Available

WDA Motion Alignment Sensor

• Magnetic Proximity Belt Speed and Belt Alignment Sensor

• Detects Moving Steel Ferrous Targets

• Adjustable Sensing Range of 1 to 3 Inches

• Not Affected by Material Build Up

• Stainless Steel Construction

• High Temperature Version Available

Whirligig® - Heavy Duty

• Fully Guarded Target for Easy Mounting of Motion Sensors

• Heavy Duty - Stainless Steel Construction

• Twin Sealed Stainless Steel Bearing

• Easy Installation - Only Requires 5/8" UNC Tapped Hole in the

  Machines Shaft