Safety of machinery - Interlocking devices associated with guards - Principles for design and selection

This International Standard specifies principles for the design and selection - independent of the nature of the energy source - of interlocking devices associated with guards. This International Standard covers the parts of guards which actuate interlocking devices. This International Standard does not necessarily provide all the specific requirements for trapped key systems. This International Standard provides measures to minimize defeat of interlocking devices in a reasonably foreseeable manner.