Electronic
Pneumatic Level Control EPN

Electronic pneumatic level control system for use with dynamic and vibration sensitive measuring machines as well as testing and production machines.

By using an intelligent control algorithm and electronic valves, deflections and settling times can be significantly reduced compared to mechanical-pneumatic level controls.

By using an intelligent control algorithm and electronic valves, deflections and settling times can be significantly reduced compared to mechanical-pneumatic level controls.

General product description

Description

Electronic pneumatic level control systems are suitable for combination with BiAir® membrane air springs. By using an intelligent control algorithm and electronic valves with flow rates of up to 250 l/min, deflections and settling times can be significantly reduced compared to mechanical-pneumatic level controls. The Bilz electronic pneumatic level control systems are ideally suited for use with dynamic and vibration sensitive measuring machines as well as testing and production machines.

System structure EPN

System structure

System structure EPN (schematic illustration)

Properties
  • Successor of the proven EPN control system (retrofit)
  • Control of 3 degrees of freedom per control unit
  • Position accuracy < ± 0.01mm
  • Control of air springs via proportional valves
  • Compatible with BiAir® membrane air springs
  • Compatible with FAEBI® rubber air springs with additional filter
  • Adjustable system parameters via PID controller
  • Low deflections and settling times during load changes
  • Intelligent browser-based interface
  • Visualization (WebVisu) for adjustment and diagnostics
  • Remote maintenance possible
  • Industry 4.0 interface can be implemented
  • Shutdown to safe state even in case of power failure or pressure loss
  • No disturbing heat generation, magnetic field changes or high power consumption compared to electromagnetic actuators

Technical Data EPN

Note

The EPN is designed as an integrated central control system including the proportional valves to minimise the space required on machine side and the reduce installation effort. Only the hoses to the air springs, as well as the cables to the displacement transducers, are to be attached directly to the machine.

Three control circuits can be monitored and controlled independently of each other using a PID controller. Height sensing is carried out via a potentiometer for each control circuit and is processed with 16 bits. The system also has pressure monitoring for each control circuit and the air supply.

The parameters can be set via a website for easy commissioning.

Communication with a higher-level control system can take place via digital inputs/outputs as well as via a separate bus interface.

The EPN is optimised for cost-efficient electro-pneumatic level control of machines.

Technical data overview
Reset accuracy
 
± 0,01mm
 
Reset speed
 
fast
 
Regular rest
 
very good
 
Damping
 
15 % passive out of air spring
 
Valve type
 
poppet valve (proportional)
 
Application BiAir
 
yes
 
Application FAEBI
 
yes
 
Contact us

How may we help you?

Please contact our responsible sales representative. We look forward to your inquiry and will get back to you as soon as possible!

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