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Example of PI controller

1/24/2011 6:25 PM	Rate (3)
MrPaiva Silver Member Joined: 6/29/2010 Last visit: 10/27/2022 Posts: 112 Rating: (63)	Here an example of PI controller with PWM output and generical variable. Attachment PI program.zip (1417 Downloads)

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This contribution was helpful to 6 thankful Users Betel ROCLIM Out Control Mc Muffin EIC_CONTROL Jack.I

6/8/2011 5:43 PM	Rate (0)
Fuad001 Posts: 3 Rating: (0)	Hello, I've been trying your PI controller, what I'm puzzled with is that PWM, there seems to be a long delay for it to start and stop. I was wondering if it is possible to reduce that delay, for example I want it to start immidiately after pressing the button. It works great when it starts, but when the PWM signal goes to zero, it takes close to 30 seconds to start again. Is that common amonst LOGO? or is there a solution? Thank you. Fuad
Fuad001 Posts: 3 Rating: (0)
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6/10/2011 9:20 PM	Rate (3)
MrPaiva Silver Member Joined: 6/29/2010 Last visit: 10/27/2022 Posts: 112 Rating: (63)	Hello Fuad001, You can change the parameters of the PI block to obtain the better answer to your system. Take a look at picture attached: Attachment PI parameter.JPG (1167 Downloads)

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This contribution was helpful to 2 thankful Users Mr.Kataoka EIC_CONTROL

6/3/2015 12:46 PM	Rate (0)
AutoGen_925402 Posts: 2 Rating: (0)	Hello, Im trying to make Pi-control whit PWM and it wont work. When PWM periodic time is on it works but goes too far from set point and if periodic time is zero it wont work at all. Best regard Mikko
AutoGen_925402 Posts: 2 Rating: (0)
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6/3/2015 2:25 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/6/2025 Posts: 35929 Rating: (4498)	With period of zero it might not work. Enter a test time for a period of 3 seconds. And then look....

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