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VS units increase safety and efficiency

INDUSTRIAL safety specialists Fortress Interlocks have extended their range of mGard trapped-key safety interlocks by introducing a range of voltage switching (VS) units that prevent the removal of a gate access key while a machine is in motion.

Voltages on a machine are generated even if the power has been switched off and the machine is in its run-down cycle. The VS units monitor the voltage on the windings of the machine’s motor, in addition to any shorts or open circuits, and grant access only when it is safe to do so.

Fortress say the benefit of such an operation is the significant time saving that can be made by reducing machine downtime to an absolute minimum, while providing maximum safety. Such a process is said to be far more efficient than an alternative fixed-timer system, particularly if the machine has a variable run-down period.

 

Once released, the access key can be used on a range of complementary products in the mGard range to open a single door or release multiple keys for larger installations.

The mGard range consists of robust modular units which control access to enclosed areas. Available in one- to 10-module versions, they offer a patented sequencing system, with up to 39,000 different sequences in a 10-module arrangement. Fortress say the flexibility of the mGard modular units means that a huge variety of applications can be catered for.

 

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