The intelligent sensors digitalise the measured values from the drive and enable them to be linked with various points in the CNC, e.g. on the frequency converter. Lenord + Bauer has developed a sensor solution by the name of MC Observer for just this purpose. The data is either transferred directly into the CNC or pre-processed by means of an OPC server. Alternatively, the data can be transferred fully processed directly into the umati language. The signal path of the motor feedback system remains unaffected and the safety requirements are met.
This means that measured values are turned into information that can be used for process optimisation or linked with further signals (e.g. temperature, vibration, radial and axial shaft displacement). That in turn enables comprehensive statements to be made about predictive maintenance.
Leading machine and control system manufacturers have formed a network with the German Machine Tool Builders’ Association (VDW). Umati was created as an open, freely available standard based on OPC UA (Open Platform Communications Unified Architecture), a collection of specifications for communication and data exchange in the industrial automation sector. The aim is to develop an OPC UA information model as a universal communication interface between machine tools and information systems.