This part of IEC 61800 specifies requirements for adjustable speed power drive systems, or their elements, with respect to electrical, thermal and energy safety considerations. It does not cover the driven equipment except for interface requirements. It applies to adjustable speed electric drive systems which include the power conversion, drive control, and motor or motors. (Published Document (JS))
This part of IEC 60947 applies to proximity devices with an enhanced resistance to failure (PDF). It specifies requirements for four different types of PDF. (Published Document (JS))
