faq

Brief introduction of Belt Sway Switch

2015-01-08

   Belt Sway Switch is a protective switch for detecting the meandering (sway or deviation) of belt conveyors, and automatically sends out an alarm signal and an emergency stop signal once belt conveyors occur any sway or deviation.
 
belt-sway-switche

  Working Principle
  When the meandering (sway or deviation) happens during the operation of belt conveyor, belt conveyors will touch the touch roller and make the touch roller meandering (sway or deviation),
If the touch roller deflection angle is up to 1 level switch angle, the switch will send out an alarm signal. When the belt conveyors meandering (sway or deviation) seriously and is up to 2 level switch angle ,the switch will send out an emergency stop signal then the belt conveyors will stop automatically because of the meandering fault. After finishing the troubleshooting process, the belt conveyors will normal operation, and then the touch roller will realized automatic reset and return to the original state.
beltconveyor working-principle
 
  Installation and Adjustment

1. The Belt Sway Switch can be mounted along the belt conveyors on the two sides, touch rollers should be perpendicular to the surface of belt conveyors and make the two sides of belt conveyors located in the 1/3 height of the touch rollers.

2. The optimum spacing between the touch rollers and the normal position of the belt conveyors is 50~100mm.

3. The conveyor length, type and the installation will decide the use quantity of belt sway switch. Belt sway switch generally mounted on the head section, tail section, convex curved section, concave curved section of the belt conveyor or mounted on the middle section of the belt conveyor. (Note: If the belt conveyor is longer, belt sway switch can be mounted on the middle section of the belt conveyor and each 30~35m can be installed one.

4. Belt sway switch should be contact with the belt conveyor’s intermediate frame via mounting bracket, switch bracket should welding with the belt conveyor frame after finishing the installation of the belt conveyor, belt sway switch and belt sway switch bracket should fixed with bolt.
  Application
2 level belt sway switch is widely used in the normal belt conveyor: underground, ropeway supporting belt conveyor: ship handing system; stacking/feeding conveyor; inclined and shuttle conveyor; crane, excavator, booms stopper: apron feeder/conveyor: heavy duty limit switch is a protective switch for detecting the meandering (sway or deviation) of belt conveyors, and automatically sends out an alarm signal and an emergency stop signal. It is widely used in metallurgy, coal, cement mining, electricity, port chemicals and other fields.
Belt Sway Switches

Specifications

1. Nominal Voltage: AC380V
2. Rated Current: 5A
3. Output Contacts: 1NO + 1NC/ 2NO + 2 NC 
4. Enclosure Level: DT dust tight enclosure, IP67
5. Environment Temperature: -25~80℃
6. Operating Environment: frequency of vibration: 10-60Hz, amplitude of vibration: 0.75mm(10g)
7. Dimension: shell L×W×H(mm)190×135×100
8. Operating Force: 5~7㎏
9. Communication Interface: RS485 address coding network communication(only to models with BM suffix)