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pid regulation Impuls heater...

Created by: vinise at: 3/13/2011 8:49 PM (4 Replies)

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3/13/2011 8:49 PM	Rate (0)
vinise Member Joined: 2/23/2011 Last visit: 3/18/2011 Posts: 13 Rating: (0)	hy, I would like to know what's the best way to make a good temp. regulation with a heater witch i can only turn it on and off... so i have to make a good pulse train to get the good temperature. I've looked on pid_compact but i only get a percentage of heat is there any thing to do what i want? Thanks

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3/14/2011 9:00 AM	Rate (0)
B......Onkel Bronze Member Joined: 4/24/2008 Last visit: 1/28/2019 Posts: 117 Rating: (15)	use FB58. It is installed with STEP7.
	Keine Amnestie für MTV! --------------------------------------------------------------- Wir wollen das, war wir nicht kriegen Freiheit und Piratenliebe Wir jagen Tag für Tag Unseren Träumen nach
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3/14/2011 12:14 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 1/24/2020 Posts: 3803 Rating: (1057)	Hi, The use of FB58 is restrict to STEP 7 Classic, not for STEP 7 Basic 10.5... My sugestions: 1 - Use PID_Compact with option of digital output. 2 - Use PID_Compact with PWM generator (see TIP Sample program: PID Lean PWM generator for standard IO /tf/WW/en/Posts/42960#top) 3 -As varianto of open suggestions, you can use a self made PID (see TIP Sample program: PID Lean /tf/WW/en/Posts/45886#top)
	Denilson Pegaia Siemens Industry Sector Technical Support
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3/14/2011 11:55 PM	Rate (0)
vinise Member Joined: 2/23/2011 Last visit: 3/18/2011 Posts: 13 Rating: (0)	thanks i'll try that :)

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3/17/2011 9:43 AM	Rate (0)
vinise Member Joined: 2/23/2011 Last visit: 3/18/2011 Posts: 13 Rating: (0)	hy, I've suceed to do a good regulation but i got a big problem.. I do the auto tune with step7... load it on the project . save the project, and upload the project on the cpu when i do that everithing is working... and the pid is perfect. But if i turn the power off and on again... everything is working on the cpu exept... the pid. WHY?? i use a pid_compact and pwm_gen.... is it a problem of memory or the ob is not starting? thanks

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