Product category:
Safety relays, interlocks, control systems, electrical components
News Release from: Euchner (UK) | Subject: Non-contact safety switches CEM with solenoids
Edited by the Manufacturingtalk Editorial
Team on 11 May 2006
Non-contact guard locking introduced
A proven transponder-based safety switch with solenoid is now also available with monitored guard locking and the switch is suitable for safety category 4 applications.
Euchner expands its non-contact safety switches CEM with solenoids Due to the integrated monitoring of the solenoid, the switch can be used for guard locking with guard locking monitoring
This article was originally published on Manufacturingtalk on 23 Jul 2002 at 8.00am (UK)
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The proven transponder-based safety switch CEM with solenoid has been expanded with a new feature -the familiar switch is now also available with monitored guard locking.
The CEM system is suitable for safety category 4 applications.
The integrated electronics in the switch interrupt the data transfer between CEM actuator and read head if the adhesive force is inadequate, the safety outputs on the CES evaluation unit are switched off immediately.
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A simplified safety switch wiring incorporates modern bus technology has reduced the complexity of wiring control for category 3 or 4 safety switches.
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Euchner is therefore placing on the market the first real non-contact guard locking according to EN 1088.
The adhesive force of the solenoid in the CEM read head in conjunction with the CEM actuator keeps a safety guard closed until the hazardous machine movement has come to a stop.
The adhesive force between solenoid and actuator is, depending on the switch version, 500N or 1000N.
Even if the user applies very high force, the opening of the safety guard is effectively prevented.
The transponder technology in combination with a CES evaluation unit provides tamper-proof operation for the user.
Up to 4 CEM read heads can be connected to the external evaluation unit using M8 plug connectors.
The CEM safety switches in versions with or without solenoid monitoring are absolutely identical both in terms of the connections and the fixing dimensions.
The switch that matches the safety level required can be fitted.
If the interlocking solenoid is switched off, the read head is fully de-magnetized.
This action is achieved by multiple polarization reversal.
When installed vertically, this feature ensures that even very fine pieces of metal swarf 'drop off' the surface of the CEM - the switch can therefore also be used on machines used for machining metal.
* About Euchner - Euchner in Leinfelden, Germany, is an international family business and employs more than 400 staff worldwide.
Eleven sales subsidiaries, of which seven are in Europe, two in Asia and two in North and South America cover the globe along with 23 authorized sales offices.
The company is managed by brothers Michael and Stefan Euchner.
Switchgear has been developed at Euchner for more than 50 years.
These devices are used primarily in machine tool manufacture.
The company has a leading position in safety products.
Euchner safety switches reliably mechanically and electrically monitor the position of safety guards.
They are used all over the world predominantly on machine tools and in packaging machines and printing presses.
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