4/15/2014 7:40 AM | |
Posts: 10 Rating: (0) |
What i am trying to do is, make a distance control, like this https://www.youtube.com/watch?v=wbsQxwiJC2o&feature=player_detailpage#t=15 I have a distance sensor GP2Y0A21YK0F 0-5v A motor 24VDC 40W And i have a set point, lets say 3volt I have made a simple PWM program to control a DC motor on a LOGO! 12/24RC 0BA6. the PWM hz is very low so the motor movements are jerky. but its only for testing and learning. for changing motor polarity i have used a external relay.. how is this normally done ? Also i have been looking at the SIMATIC S-7 to get more HZ , but how much HZ do i need for controlling a 24DC motor smoothly ? Or is it better to use a analog output for this application ? any comments are welcome AttachmentTEST 14-04.zip (360 Downloads) |
Last edited by: laurits at: 4/15/2014 7:44 AM |
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This contribution was helpful to2 thankful Users |
5/25/2014 6:37 PM | |
Posts: 378 Rating: (73) |
Hello, For such application I prefer to use DC motor drive with isolated speed referance input like this one, and from your logo you can program the speed level, direction, start/stop. Rgs, |
This contribution was helpful to1 thankful Users |
5/25/2014 7:11 PM | |
Posts: 10 Rating: (0) |
thank you .. i will take a look at it |
5/29/2014 3:53 AM | |
Joined: 7/8/2009 Last visit: 7/26/2023 Posts: 1974 Rating: (477) |
Pulse O/p is better for stepper motor control. For normal DC motor, i agree with suggestion of desmul24 Or i think you should try with analog also. Best regards, Devesh Vithani |
I dont Like people driving Fast, thats the reason I overtake them ;) |
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4/20/2016 9:52 PM | |
Joined: 12/27/2006 Last visit: 4/27/2024 Posts: 1196 Rating: (113) |
For PWM its better to use a LOGO with transistor-outputs. |
4/21/2016 11:54 AM | |
Joined: 10/10/2010 Last visit: 4/28/2024 Posts: 307 Rating: (15) |
but in all cases you need a dc drive for controlling the motor |
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