Door with guard locking – EUCHNERS new safety system rated with the EN ISO 14119 standard

New guard locking
Photo by EUCHNER

Assessment of the safety system on a door with guard locking – the new EN ISO 14119
The use of guard locking on safety doors has long been a proven technology for protecting machines with overtraveling movements.

Guard locking ensures that the safety door cannot be opened until the machine has come to a complete stop.

The currently valid EN 1088 will soon be superseded by EN ISO 14119. Both standards provide assistance in the assessment of interlocking devices on movable safety guards. In addition to EN ISO 14119, all other valid standards taken into account for assessing the “guard locking” safety function will be introduced briefly below. The “main standard” in connection with safety doors is currently EN 1088, “Safety of machinery – Interlocking devices associated with guards – Principles for design and selection”. This standard has existed since 1995 and was most recently supplemented and published in 2005.   The date of the standard is now 2008, but only legal adaptations to the modified Machinery Directive have been added. In terms of content, virtually nothing has changed since the initial publication. A fundamental revision of EN 1088 has been in progress for several years. The draft appeared in the year 2011 under a new number – prEN ISO 14119. The final version is scheduled to appear in early 2013. It has again undergone extensive revisions compared to the draft version. Several key changes will be introduced briefly over the course of this article.

For more information please visit: www.euchner.de

• CID: 14558