Product category:
Alarms, annunciators and safety interlocks
News Release from: Netherlocks | Subject: safety switch
Edited by the Processingtalk Editorial
Team on 21 February 2003
Totally mechanical safety lock
A simpler and cost effective safety switch solution lies in mechanical key transfer, where locking and unlocking are both fully mechanical
Netherlocks has launched a safety switch that needs no electrical wires European legislation forces plant safety managers to increase their safety level to a high standard
This article was originally published on Processingtalk on 11 Aug 2008 at 8.00am (UK)
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When they are forced to do this, they often look for an electrical solution.
Netherlocks founder and designer, Albert Buschgens, explains that a much simpler and cost effective solution lies in mechanical key transfer.
Locking and unlocking are both fully mechanical.
Electrical systems, he maintains, require regular maintenance, and are vulnerable to dirt, heat, vibration and external impact.
Furthermore, you have to monitor and control all these signals with a PLC, which often makes the eventual price impact unacceptably high.
The basic principle of making a machine park safely is to assure that an operator or engineer cannot reach a powered machine.
Therefore, Netherlocks offer mechanical locks that fit on switches, doors, fences, valves etc Always, before an operator can open a fence door or hatch he must turn off the power switch.
This action releases a key, which is required to open the entry.
Thanks to the use of a mechanical key transfer, all wire-related equipment can be eliminated, thereby reducing maintenance.
This is a very important advantage for heavy industries, and Netherlocks wireless switches can be completely maintenance free in applications such as pulp and paper, electrical precipitators, robots, and the paint, cement and petrochemical industries.
In addition, with no wires, savings can be made on installation and safety certification.
For further application flexibility, the locks can be combined with solenoids or mechanical time delays.
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