Troubleshooting Challenge: Regenerative Circuit Fails to Close (.PDF Download)

A large press uses a regenerative circuit to increase the closing speed of a ram. A pressure switch signals a PLC to close a logic slip-in cartridge valve so the ram can reach maximum tonnage. The press started having trouble developing enough tonnage when the logic valve did not close when Solenoid A was de-energized.

Technicians found the logic valve sleeve and poppet to be in good shape, and replacing the pilot valve did not fix the problem. They then removed the screw-in cartridge

Register to view the full article

By registering on Hydraulics & Pneumatics now, you'll not only gain access to [current-page-title], you'll also receive a complimentary copy of Hydraulics & Pneumatics 2016 Salary & Career Report.

Already a member? .

Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish