Beam and edge wiring

      Beam & edge wiring

Simplify wiring by interconnecting edges and beams with the same function




Author  :    Huw Jones

Simplify your wiring

Who hasn't run out of cable cores on the far side of the gate? Cable cores fail over time, and other fitter's wiring can be unfathomable. But you can keep your own wiring neat and tidy and have cable core left over

In a crisis, the 'go to' solutions are battery beams or wireless sensors. There is a place for new technology, but not to replace incomprehensible wiring.

A photobeam is your best friend. It is a safety device, but also sends a binary signal - safe or unsafe. 

Example gate

This article discusses wiring techniques to simplify wiring for two safety channels. There is also a big premium in reducing the number of cable cores needs across the duct. 

Our discussion gate plan has the control panel on the right. The far side (left) gate opens up against a side wall making a crush zone or entrappement hazard. A safety edge is shown on the side wall. Two short displacement safety edges are fitted next to each hinge. The last edge is fitted to the gate closing edge. 



Most gate control panels have at least two safety inputs, and often three. The standard gate post beam function is 're-open during close', refered to as 'channel A'. The other safety input is normally programmable as 'pause' or 're-close' or 'stop'. Our gate will use the 'pause' function and call it 'B'.

The far side (left) has two safety edges for channel A and two for channel B. 

The wiring diagram is split left and right of the duct. The right pier has the control panel. Remarkably, the only duct cables required are to power the photobeams, and if the FA33 battery beams are used, the duct only carries the motor cable.