Two DC Drives Master-Slave

[HenriS]

Hi!

I'm desingning a new control systems and plc for old copper cutterline. I need to change two old DC drives for newer ones. Motors are in the same line, so I think it should be called Master-Slave system. I'm new to these drive things and don't have a clue how should I do speed control for these drives. Speed reference should be able to adjust from one place for both drives (potentiometer), and speed difference between drives must be able to adjust. Allso need integration for speed-reference. The old control system was made by using self-made analogue electronics.

Any suggestions how should I do speed control for drives? Does new DC drives have these functions integrated? Can you name some manufacturers? Is there any sense for using PLC to control drives? Do you know any websites with information?

Thanks in advance
HenriS

 

[dydt]

hi..

visit this site..

http://www.kbelectronics.com/

dydt

 

[skills]

I can't tell from question whether you're wanting to voltage control or speed control these motors. If you just want to voltage control these motors, try a couple of DART drives if you're using a 90vdc/180vdc shunt field or PM motor. These drives allow master/slave voltage following. If you're really speed controlling, i.e. using speed feedback, most DC drives can be used as well. Yes, new drives have ratiometric speed reference inputs and outputs that are easy to use for most manufacturers. I hope this helps.

 

[jbartos]

Suggestion: Visit

http://www.iserv.net/~alexx/lib/motors.htm

http://www.mathworks.com/access/helpdesk/help/toolbox/powersys/tut_c13a.shtml

http://www.htservices.com/Tools/MotionDrives/

http://www.instantweb.com/o/oddparts/acsi/motortut.htm

etc. for more info