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| 11/14/2010 2:45 AM | |
Joined: 9/27/2006 Last visit: 1/21/2026 Posts: 12481 Rating:
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Hello SpaceBee; The S7-200 does have a PID Wizard in MicroWin, and you can study it in the Instruction Set chapter of this manual: S7-200 System Manual There is even an autotune function (it has its own chapter in the manual) which could possibly help you in these circumstances. But you still cannot simply input the motor's transfer function and expect optimal control from the PLC. First, you do not control simply the motor, but also its load (the process) which can vary with time and other circumstances. So your tranfer function has to include that (the graphical techniques to obtain the transfer functions are explained on controlguru.com). And autotune functions still can only give you approximate values for the P,I and D parameters, so if you have no idea what to expoect you still will be lost when deviations appear in your control scheme. Hope this helsp, Daniel Chartier |
| 11/14/2010 5:56 PM | |
Joined: 3/21/2006 Last visit: 1/10/2026 Posts: 10247 Rating:
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Hello, Perhaps this link might helps you in future - Tips and Tricks S7-200 - S7-200 Best regards, Hristo Mihalev |
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