johnfarrugi
Member
I have a press steel feeder application which I need some help with. Currently there are three servos being controller through a CLX PLC, sercos system. There is a cradle servo which rotates the large steel roll and two "pulling" servos which help feed the steel into the press. Right now all servos are controlled by independent MAM commands. The problem I have is slippage. If one or more of the servos slip on the steel, a 10" feed length may only be 9.5" in the press. To help this issue, I've installed an external encoded which is mounted on a set of "free wheeling" rolls which will read the actual steel feed length. I would like to use this external feed encoder to adjust the three feeder servos to conpensate for slipage. I'm a little unsure how to do this. I want to tell the three servos to move 10" and and then use the external encoder for reference.