ELECTRONIC LEVEL CONTROL SYSTEMS ELECTRONIC PNEUMATIC LEVEL CONTROL EPN

General PRODUCT DESCRIPTION

Electronic-pneumatic level control systems EPN 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, significantly reduced deflections and decay times can be achieved compared to mechanical-pneumatic level control systems. The electronic-pneumatic level control systems from Bilz are therefore ideally suited for use in dynamic and vibration-sensitive measuring machines as well as testing and production machines.

TECHNICAL DATA

The EPN is designed as an integrated central control including valve technology in order to keep the space required on the machine and the assembly effort as low as possible. Only the hoses to the air springs, as well as the cables to the position sensors, must be attached directly to the machine.

3 control circuits can be monitored and regulated independently of each other using a PID controller. The height scanning is carried out for each control loop via a potentiometer and is processed with 16 bits. The system also has pressure monitoring for each control circuit as well as the air supply.

For easy commissioning, a web interface is implemented with which the parameters can be set.

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

The EPN is optimized to cost-effectively implement electro-pneumatic level control of machines.

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

Reset accuracy	±0.01mm
Reset speed	Fast
Regular rest	Very Good
damping	15% passive from air spring
Valve type	Seat valve (proportional)
Application BiAir	Yes
Application FAEBI	Yes

ELECTRONIC LEVEL CONTROL SYSTEMS ELECTRONIC PNEUMATIC LEVEL CONTROL EPN

General PRODUCT DESCRIPTION

TECHNICAL DATA

System Structure

Solutions