8/24/2007 9:09 AM | |
Joined: 4/24/2006 Last visit: 9/6/2024 Posts: 8735 Rating:
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Hello henno2000, Have a look at the following link: Micromaster: Process Data exchange via Profibus DP using Drive ES Perhaps it will help you. Best regards, Wizard |
8/24/2007 6:29 PM | |
Joined: 8/31/2005 Last visit: 8/20/2024 Posts: 2198 Rating:
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Here is a getting Started MM-PROFIBUS-S7: http://support.automation.siemens.com/WW/view/en/8894363 If you want to change Parameters: http://support.automation.siemens.com/WW/view/en/8894584 And if you want to use 'Like-Standard'-FB: http://support.automation.siemens.com/WW/view/en/22318171 |
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8/30/2007 11:55 AM | |
Posts: 177 Rating:
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Many thanks for the advice. For the motors that I am wanting to control, they are to run at 100% speed, until they reach a particular threshold, then decrease proportionally to the pressure, until they reach their 'OFF' value. I have been thinking about my problem and am not sure if the solution would be for PID control (this may be over-complicated for the task), but to implement a set of rules for when the pressure reaches a particular threshold, send a speed reference to the drive. I have attached an Excel file of when I need the pumps to start decreasing speed. Could someone agree what the best control method would be? Regards, henno2000 AttachmentDrive Speed.zip (294 Downloads) |
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