Again... thank you for the input.
The attached image [below] shows the basics of the existing set up: the brakes on a capstan are currently being controlled with a hand pack-off pump; the greater the pressure on the brakes, the greater the capstan causes tension on the line being pulled around...
zeusfaber (and littleinch) - The lightbulb went on. I get it now that it would be difficult to control the pressure directly with hydraulics. The idea of air pressure over the hydraulic chamber makes perfect sense. Now I need to find out how I can regulate the air pressure with a controller...
Thank you all for the replies. Forgive me as this is my first post... I do not see a way to reply to individual responses, only 'reply to the post'. Allow me to clarify my scenario:
We have trucks with 15K+ feet of wire spooled on for oil, gas, and geothermal well service work. Occasionally we...
Hi - The goal of my project is spool high-strength wire on to a drum at a fixed tension. To do so, I am considering controlling a small, hydraulic proportional valve using a PLC that will essentially feed a hydraulic brake. I will have a 4-20mA input (line tension feedback) to a programmable...
