Frommelt Safety, Milwaukee, Wis., updated its automated barrier door—the Guardian Defender—to protect employees from automated stretch-wrap machines as Frommelt stretch wrap doorwell as other robotic machine movement zones. The new door boasts patent-pending upgrades to its non-contact safety switch configuration, control systems and interlocking capabilities.

The Guardian Defender’s high-speed, high-cycle automated door safely separates machine operators and manufacturing processes. It also contains fumes, sparks, smoke, mist, flying debris, excess noise and other common manufacturing process by-products, making it ideal for robotic welding cells, automated assembly and palletizing/packing machinery. Additionally, the roll-up design leaves a minimal footprint into the typically crowded manufacturing cell.

Other features include:

• PLe hold-down mechanism, which locks the door in “down” position to allow for machine “de-energizing” time.

• Redesigned rotary cam limit switch, encoder positioning and variable frequency drive to control the curtain’s operating speed and position, dramatically improving the adjustability of door position, speed and control.

• Non-contact interlock switches, manufactured by Jokab, Pilz, Schmersal and Allen Bradley. These provide PLe specifications per EN ISO 13849-1 when integrated properly.

• Designed with new ISO 13849-1 specification and EN 10218-2 specifications in mind.

To learn more about the Guardian Defender and other energy-efficient doors, check out the Energy Management section of Refrigerated & Frozen Foods’ September 2013 issue.

Frommelt Safety Products