BS ISO 22201-1:2017 is applicable to the product family of passenger and goods/passenger lifts used in
residential buildings, offices, hospitals, hotels, industrial plants, etc. This document covers those
aspects that it is necessary to address when programmable electronic systems are used to carry out
electric safety functions for lifts (PESSRAL). This document is applicable for lift safety functions that
are identified in lift codes, standards or laws that reference this document for PESSRAL. The SILs
specified in this document are understood to be valid for PESSRAL in the context of the referenced lift
codes, standards and laws in Annex B.NOTE Within this document, the UK term "lift" is used throughout instead of the US term "elevator".This document is also applicable for PESSRAL that are new or deviate from those described in this
document.The requirements of this document regarding electrical safety/protective devices are such that it is not
necessary to take into consideration the possibility of a failure of an electric safety/protective device
complying with all the requirements of this document and other relevant standards.Cross References:ISO 22200IEC 61249-2-1IEC 61508-1:2010IEC 61508-2IEC 61508-3IEC 61508-5IEC 61508-7:2010IEC 62326-1ISO/IEC/TR 10000-1ISO 80000IEC 60027IEC 60664-1:2007IEC 61508-4IEC 61508-6ISO 690EN 81IEC 60950ASME A17.1/CSA B44All current amendments available at time of purchase are included with the purchase of this document.