Telemecanique Atv31 User Manual

telemecanique atv31 user manual

• The designer of any wiring diagram must take account of potential control channel failure modes and, for certain critical control functions, incorporate a way of achieving a safe state during and after a channel failure. Examples of critical control functions are emergency stop and overtravel stop. • Separate or redundant control channels must be provided for critical control functions. • System control paths may include communication links. Consideration must be given to the implications of unanticipated transmission delays or failures of the link.