SINAMICS S: Speed control of a S120 with SIMATIC S7-300/400F (STEP 7 V5) via PROFINET/PROFIBUS with Safety Integrated (via PROFIsafe) and HMI
The controller is to have both read and write access to process data of the inverter (control word and setpoint or status word and actual value) and to inverter parameters (ramp-up and ramp-down time, error memory). The Safety Functions of the drive shall be addressed from the failsafe PLC.
In this context, the current faults and alarms of the inverter are to be displayed with the error number and as plain text on an operator panel. The current and acknowledged messages in the fault buffer of the inverter are to be visualized as well.
Fig. 01: PROFINET
Fig. 02: PROFIBUS DP
For the SINAMICS S120, the above task was implemented with a CPU 315F-2 DP/PN. The blocks created for this purpose, one for process data communication and one for parameter access, can be used as a basis for your own applications. The failsafe addressing of the SINAMICS S120 is done as example.
The documentation for the application example describes the necessary configuration and programming of the required functions.
The screens and downloads in this example were created with the following versions:
- STEP 7 V5.5 + SP3 HF2
- S7 Distributed Safety V5.4 SP5
- WinCC flexible 2008 + SP3
- STARTER V4.3 SP3 HF1
- SINAMICS S120 with Firmware V4.6
STEP 7 Projects
for SINAMICS S120 with firmware V4.6
The PROFINET/PROFIBUS STEP7 projects differ only in the fieldbus used and in the SINAMICS S120 Control Unit.
summarizing the projects to one project with Firmware 4.6