MICROMASTER: PROFIBUS monitoring and “LOCAL / REMOTE” changeover
Due to differences in the parameter structure:
- this application only applies to MICROMASTER 4 and SINAMICS CU240x with Firmware < V4.0
- this application cannot be used for SINAMICS CU230.
If there is a Profibus communications error (failure) or if the system is specifically powered-down (SIMATIC S7 and Profibus communications), then the drive inverter should be changed over to other command and setpoint sources.
This then guarantees uninterrupted operation (e.g. for emergency operation).
Using a MICROMASTER 440 or a SINAMICS G120 drive equipped with CU24S DP and a PLC - in this case an S7 300 – this applications shows how a Profibus communications error (failure) can be identified.
In order to solve this task, the possibilities of the 3 command data sets (CDS) of MICROMASTER 4 (430 & 440) / SINAMICS G120 will be used.
3 different drive control types can be implemented with these command data sets (CDS).
|Content of Downloads||
|07/2006||enlarged to SINAMICS G120|