Emerson Appleton Conveyor Belt Alignment Switch, AFA and AFAX
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Appleton™ AFA and AFAX Conveyor Belt Alignment Switches

Brand: Appleton
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Appleton™ post style or large roller style conveyor belt alignment switches are used in the control circuit of magnetic motor starters to shut down motor driven conveyors in case of abnormal belt misalignment or run off.

They provide an emergency stop switch for convey or lines and bulk handling systems which become misaligned or run off their tracks due to excessive speed, uneven load, leveling, breakage or other problems.

The AFA Series is for use in industrial areas. The AFAX Series is for use in hazardous areas.
Features
  • Used where alarm or computer interface capabilities are needed
  • Unit is used in pairs with one switch placed on each side of the conveyor belt. Recommended installation locates switches near the tail and head pulleys on conveyors 91.44 meters (300 feet) and longer
  • Post style or large roller style
  • AFAX Series is used in Class I and II areas where flammable vapors or highly combustible dusts are present
  • AFA Series has a gasketed cover rated for NEMA 3, 3R, 4, 4X
  • AFA10, AFA20, AFAX10, AFAX20: Each unit can be equipped with two micro switches to produce signals indicating belt misalignment at two deviation points. The first signal point could indicate small belt deviations by sounding an alarm. The second signal point could guard against extreme belt runoff by shutting down the conveyor
  • AFA10, AFA20, AFAX10, AFAX20: Operating arm has 247.65 mm (9.75'') high and 31.75 mm (1.25") diameter roller and moves 90 degrees in both directions. Spring loaded arm returns to original position when belt is realigned
  • AFA1, AFA2, AFAX1, AFAX2: Roller is 3.5'' high and actuates with 0.25'' travel. Unit should be mounted about 1'' from belt to eliminate false signals

Specifications

Brand

NEC / CEC Certification & Compliances

  • Class II, Div. 1 & 2, Groups E, F, G
  • Class III, NEMA 7CD, 9EFG
  • Class I, Div. 1 & 2, Groups C, D

Operating Temperature

  • -40° to +65° C (-40° to +149° F)

Option Finish

  • Epoxy Powder-Coated

Options

  • Breakaway Mounting Bracket with Switch
  • Breakaway Mounting Bracket with Explosionproof Switch
  • Breakaway Mounting Bracket

Standard Conduit Opening

  • AFA1, AFA2, AFAX1, AFAX2: One 1/2'' NPT
  • AFA10, AFA20, AFAX10, AFAX20: One 3/4'' NPT

Standard Materials & Finishes

  • Actuating Arm: Red Epoxy Coated Steel
  • Shaft & Hardware: Stainless Steel
  • Housing: Cast Aluminum with Peened Finish

Documentation

Catalogs

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