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Created by: veer at: 6/24/2012 4:58 PM (3 Replies)

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6/24/2012 4:58 PM	Rate (0)
veer Posts: 103 Rating: (0)	dear experts plz let me know that how can i synchronise speed of servo motor with a line encoder in closed loop system through plc. my project detail is ,i m using a s7-1214 cpu ,tde-macono drive for servo motor ,i convert the line speed from line encoder in +/- 0 - 10v signal to control the speed of servo motor but in this way i m not getting accuracy so how can i make this system closed loop using servo encoder through plc to make it accurate. what i need ,i want to use line encoder as master to control the speed of servo motor . THANK YOU HAVE A NICE DAY
veer Posts: 103 Rating: (0)
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6/24/2012 10:46 PM	Rate (0)
Denilson Pegaia Platinum Member Joined: 9/23/2005 Last visit: 11/14/2024 Posts: 4352 Rating: (1452)	Hi, normally the encoder is connected directly to the driver to get more accurance. If you decide to use the PLC, however, I suggest this way 1 - configure a HSC to read pulses 2 - in a time OB read the pulses, and convert it to frequence (speed = k * delta pulses number); e.g. k = gear ratio/time inteval). note convert the values to float point 3- in the same ob use a PID to control the speed; analogica output -> drive reference.
	Denilson Pegaia Siemens Industry Sector Technical Support
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6/25/2012 12:03 PM	Rate (0)
veer Posts: 103 Rating: (0)	hi.. pegaia can i get sample program for this thanks
veer Posts: 103 Rating: (0)
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2/6/2015 2:54 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4766 Rating: (122)	New question published by M.Safwat is split to a separate thread with the subject CPU 1212c, how to configur PID. Best regards Min_Moderator
	Last edited by: Min_Moderator at: 2/6/2015 2:58:39 PM
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