Active opto-electronic protection devices, or because they are more generally known, safety light rèm động cơ systems or light pads, give a practical and price effective approach to protecting personnel from injuries at harmful machinery they can be obtainable in two primary groups: type 2 or type 4.
Selecting which group of guard ought to be used is directly based on the seriousness of the possibility harm to the operator that exists in the intended application. A complete risk assessment ought to be applied standards BS EN 954 and BS EN 1050 might be useful within the risk and safety type evaluation. Fundamental flow chart diagrams can be found.
Safe Hazard
A minimal risk hazard, for instance, is recognized as where the seriousness of damage is slight. Contact with danger is restricted due to the semi automatic / automatic running from the machinery not requiring regular operator intervention. This is considered a kind 2 machine guarding product.
High-Risk Hazard
A bad risk hazard is how the opportunity of severe damage exists and contact with the risk area is frequent or continuous. For instance, this can be the hands feeding of sheet steel into press tools every cycle. This could need a type 4 machine guarding product for use.
The Sunshine Curtain Length and Backbone
The active optical curtain length and also the resolution from the optical curtain are factors and to be considered when sourcing your safety light curtain system.
Typically curtain lengths vary from 150mm as much as 1650mm are available with resolution of 14mm / 20mm / 30mm, or body recognition systems options of 300mm / 400mm / 500mm.
The active curtain length should prevent achieve over and achieve under in to the danger area, and when necessary additional fencing or barriers ought to be fitted to do this.
The optical curtain resolution needed, the detectable rejection distance between individual beams within the curtain, is going to be determined by the space the guard will be positioned from the machine danger area.
The Device Guarding Distance Formula
The formula "S = (K x T) C" should be employed to calculate the needed separation distance as well as curtain resolution (object recognition capacity) essential for the applying. The device stopping performance time may also be needed with this calculation.
The security light curtain approach to guarding is broadly recognized throughout most industrial sectors and it is being a popular solution because of present day light curtains now getting smaller sized physical dimensions (35mm x 40mm) - along with easy installation.
They likewise have the benefit over conventional fixed guarding by permitting quick access for that operator during production, hence reducing the potential of repetitive strain injuries, as well as simpler access for maintenance and power changes.