The guideline is intended to simplify an additional interface between the actuator of a control valve and positioner. It is a concept open to all manufacturers of actuators and positioners which permits the exchange of different positioner makes on the same actuator.
VDI/VDE 3847 Blatt 1-2003 Referenced Document
DIN EN 60534-6-1:1998 Industrial-process control valves - Part 6: Mounting details for attachment of positioners to control valves - Section 1: Postioner mounting on linear actuators (IEC 60534-6-1:1997); German version EN 60534-6-1:1997
VDI/VDE 3845-2003 Industrial process control valves - Interfaces between valves@ actuators and auxiliary equipment