B400 Elite Beltswitch
Belt Alignment Monitor for Bucket Elevators & Conveyors


The B400 Elite Beltswitch belt misalignment monitor uses 4B Touchswitch sensors to monitor belt alignment in bucket elevators and conveyors.  Each control unit incorporates two independent monitoring circuits for early detection of belt misalignment on one or two bucket elevators / conveyors.

The 4B Touchswitch is an electro-mechanical limit switch with no moving parts.  When a belt misaligns or a pulley moves over and contacts the sensor, the built in solid-state electronic circuitry detects the lateral force of the belt or pulley and activates a voltage free relay contact.

Status LEDs on the control unit indicate the alignment condition of the belt, while internal relay contacts provide alarm and automatic shutdown of the elevator when hazardous misalignment conditions are detected.



  B400 Elite Belt Alignment Monitor  

• Bucket Elevator or Conveyor Belt Alignment Monitor


• Uses up to 4 Touchswitch Alignment Sensors


• Monitor Up To Two Bucket Elevators or Belt Conveyors


• 2 Separate Alarm Relays


• 2 Separate Stop Relays


• Push Button Testing Feature

  Product Questions? (309) 698-5611Phone or Email  Email    
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  B400 Elite Technical Specifications:   Literature:  
  • Power Supply - 120 to 240 VAC or 24 VDC   Product Datasheet Download PDF  
  • Alarm Relay Contacts - Zone 1: 1 Pole Normally Open (8A @ 250 VAC)   Full Line Product Catalog Download PDF  
                                               Zone 2: 1 Pole Normally Open (8A @ 250 VAC)   (See Downloads for more literature)  
  • Stop Relay Contacts - Zone 1: 1 Pole Normally Open (8A @ 250 VAC)      
                                             Zone 2: 1 Pole Normally Open (8A @ 250 VAC)   Technical:  
  • Sensor Inputs - 4 Touchswitch Misalignment Sensors   Product Manual Download PDF  
  • Sensor Supply - 24 VDC (B400 Internal Power Supply)      
  • LED Indicators - Power, Sensor Target Detection, Alarm & Stop Indication   Product Dimensions:  
  • Push Button Unit Testing   Download AutoCAD .dwg (AutoCAD)      Download PDF .pdf  
  • IP66      
      Compare Speed Switches Compare Monitoring Systems  
  • CSA Class II Div 2 Groups F & G      
  • CSA Class II Div 1 Available (Class 2 Power Supply Required)      
  • ATEX, IECEx and CE Versions Available          
  CSA - USA & Canada ATEX - Europe CE - Europe IECEx            
  Part Numbers and Accessories:      
  • B4004V46C ~ B400 Elite      
  • PS3800V4 ~ Class 2 Power Supply (24 VDC / 3.8 A)      
  • TS2V4C ~ Touchswitch Misalignment Sensor      
  Literature:   Product Dimensions:  
  Product Datasheet Download PDF   Download AutoCAD .dwg (AutoCAD)      Download PDF .pdf  
  Full Line Product Catalog Download PDF      
      Articles, Papers & Case Studies:  
  Technical Manuals & Documentation:   Hazard Monitoring Overview - GEAPS Paper Download PDF  
  Product Manual Download PDF   Monitoring Equipment (Grain Journal Series) Download PDF  
  RS485 Wiring Guide Download PDF   Bucket Elevator Monitoring Systems Download PDF  
      Combustible Dust Standards (Grain Journal Series) Download PDF  
  Note: Product manuals for older part numbers can be   Slack / Broken Chain Detection Download PDF  
  found under the Technical Support area.      
 Touchswitch Sensor

Belt Misalignment Sensor

The Touchswitch™ is an electromechanical limit-switch with no moving parts, which detects tracking and misalignment problems on bucket elevators and conveyors. Unlike a rub block that utilizes friction (heat) to activate, the Touchswitch is pressure sensitive for safer and more reliable monitoring.

More Info

  Does 4B offer inspection, testing and commissioning services for your hazard monitoring systems?  
  Yes, the 4B Tech Team is available for on site services.   For more information, CLICK HERE.  
B400 Elite Belt Alignment Monitor
  Belt Misalignment on a Bucket Elevator CSB Video - Action To Prevent Dust Explosions  
  (Belt Has Rubbed Through Metal Casing)    
  Westwego Grain Elevator Disaster CSB Video - What Led to the Imperial Sugar Explosion  
  Preventative maintenance can help reduce the risk of equipment failure and consequent downtime.  When it comes to  
  monitoring your bucket elevators and conveyors, 4B can recommend the ideal combination of sensors and monitoring  
  systems to suit your requirements and budget.  
  4B has an extensive range of CSA / ATEX / IECEx approved hazard monitoring systems, misalignment switches,  
  bearing temperature monitors and level controls.  4B can offer you anything from a replacement sensor, to a fully  
  integrated hazard monitoring system which can be operated as a stand-alone device or connected to your PLC.  
  And if you do not want to install hazard monitoring sensors on every piece of equipment in your plant straightaway, 4B  
  can offer you a scalable solution that can be expanded as your needs grow.  
  To get a free recommendation from our engineers, CLICK HERE to fill out our online form.