Speed Switches

4B's line of speed switches 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.

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

M800 Elite Speed Switch     

• Microprocessor Controlled Speed Switch

• LED Indication

• Non-Contacting and Fail-Safe

• Totally Sealed Construction (Submersible)

• Dual Set Points - 10% and 20 % Underspeed

• 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

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 Sensor

• Detects Moving Ferrous Material

• Extended Range Reluctance Sensor

• Adjustable Sensing Range - 1 to 4 Inches

• Two Output Signals - Pulse and Continuous

• 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

Enhanced Speed Monitoring System

• Acceleration Monitoring During Machine Start-Up

• Underspeed Set Points: 0 - 10% Alarm, 0 - 20% Shutdown

• Can Connect to Alarm Log / Print PM Software

• Add Belt Alignment & Bearing Temp. Monitoring

• Message Center Shows Speed % and Run / Alarm Status

• LED Display Shows RPM or Belt Speed

Analog Speed Monitoring System

• User Selectable 0 - 20 mA / 4 - 20 mA Output

• User Programmable Output Device

• Pulse Indication and Status LED's

• Simple Mounting with Whirligig® and Mag-Con™

SpeedMaster™  

• Speed Switch Calibration Testing

• Exact Alarm Point Testing

• Exact Shutdown Point Testing

• No Need To Modify Sensor Assembly For Testing

• Incremental Output Rates

• Easy To Read Display

Speed Relay

• Speed Ranges - 0 to 10, 100 & 1,000 RPM

• Single Output Relay - Single Pole Changeover

• LED Power and Status Indication

• Dual Power Supply - 110 / 240 VAC

• Selectable 10 Second Start Delay

• Opto-Isolated Input Signal Repeat Output

Tacho Display

• Display Speed, Rate or Time Intervals

• User Programmable

• High Clarity LED Display

• Accepts Many Different Inputs

• Underspeed Relay Contact