The barrier stands 1135mm above foundation level, with the boom 840mm (to underside) above barrier cabinet foundation level. The heavy duty motor plate supports the 100% duty cycle permanent capacitor 4 pole T.E.F.C. motor, which powers the sinusoidal drive mechanism via an industrial grade low ratio gearbox. Two heavy duty bearings support the drive shaft; this having 2 machined cams to activate the adjustable limit switches to control the boom travel.
The hinged/removable lockable steel top cover provides access to the drive mechanism. The cabinet houses the barrier ‘parking logic’ control panel, providing the necessary power supply isolator, fuses, thermal overload trips and motor contactors.
An integral support is provided to maintain the aluminium boom in the horizontal position.