IEC 62061:2005+A1:2012+A2:2015 specifies requirements and makes recommendations for the design, integration and validation of safety-related electrical, electronic and programmable electronic control systems (SRECS) for machines (see Notes 1 and 2). It is applicable to control systems used, either singly or in combination, to carry out safety-related control functions on machines that are not portable by hand while working, including a group of machines working together in a co-ordinated manner. The contents of the corrigenda of July 2005 and April 2008 have been included in this copy. THIS CONSOLIDATED VERSION CONSISTS OF THE FIRST EDITION (2005), ITS AMENDMENT 1 (2012) AND ITS AMENDMENT 2 (2015). THEREFORE, NO NEED TO ORDER AMENDMENTS IN ADDITION TO THIS PUBLICATION. The contents of the corrigendum of July 2015 have been included in this copy.