allscott
Member
- Join Date
- Jul 2004
- Posts
- 1,332
Now we are getting somewhere. I am making the same assumptions as DickDV. If you really want accurate sensoreless torque control you want an ACS 800 which utilizes DTC (direct torque control). This is ABB's algorithim for modelling the motor and directly and accuately controlling the torque the motor will produce. ABB is regarded as the best in the business for doing this.L0sts0ul said:you mentioned you worked in pipe before. its a basic pipe extrusion system, pipe is extruded from the die/extruder, runs through vacuum tanks, and cooling tanks, through the hauloff and saw, out to a winder that spools over hand. Some of the problems we have are the larger pipe has a tendency to overload the drive that is in there now and the electric brakes on the motors either aren't strong enough/or don't work to stop the back spooling of the pipe off the winder. Some of the spools get very heavy, so much as 1-2 tonnes sometimes as the pipe is sometimes 6+" in diameter and sometimes walls 1+" thick. reels are usually 10' in diameter.
thanks
Note that the ACS550 is marketed as a general purpose drive and the 800 is a high performance drive. The 550 is a good drive for a lot of things but not really designed for what you want to do.
Last edited: