Proportional Hydraulic

Introduction to Proportional Controls

Participants would benefit from having a mechanical engineering background and having attended our basic course or to have an understanding of its learning targets

What will participants learn from the seminar?

  • To introduce attendees to the principles and practices of proportional control
  • Introduction to the study of circuit construction and circuit components
  • To introduce the basic principles of the design of proportional systems
  • To gain a knowledge of both analogue and digital proportional systems
  • To become familiar with the set-up procedures on proportional systems
  • Familiarity with fault finding techniques on proportional systems

Target Groups

  • Hydraulic Maintenance Engineers
  • Commissioning Engineers
  • Project Engineers
  • Sales & Technical personnel

Contents of this Seminar

Valve construction and operation

  • Types of proportional control
  • Pressure relief, Flow control & directional control valves
  • Hydraulic symbols
  • Spool configurations
  • Selection & sizing with reference to manufacturers date

Electrical operation

  • Types of proportional control devices
  • Basic electrical circuits and operations
  • Solenoid design
  • Comparison between conventional and proportional valves

Methods of control

  • Comparison between analogue and digital control
  • Proportional attributes
  • Ramp, Gain, Deadband, Dither and Pulse width modification

Amplifier Cards

  • Principles of operation
  • Design and application
  • Analogue & digital

Closed loop

  • Internal & external feedback devices
  • Operation and application of closed loop systems
  • Integrated electronics option frequency response

Principles of operation

  • Bode diagrams and their use in manufacturer’s data
  • PID Control
  • Practical hands-on exercises utilising the Rexroth training rigs
  • Commissioning & set-up procedures
  • Open loop circuits
  • Closed loop circuits
  • Interface to the control


Delta Hydraulics, Greenogue Business Park, Rathcoole, Co Dublin

Included in this Course:

  • All course materials, including Hydraulic Trainer Vol 2
  • Lunches
  • Refreshments

Not Included in this Course:

  • Travel Expenses
  • Hotel Costs


  • Three days
  • Start time 9.00am
  • Finish time 5.00pm


€1,300.00 per Participant

For more information on Rexroth Training Courses please contact Eoin Ryan email: