servo-bigwall

Elisa Foltyn
2021-04-01T09:28:38+02:00
Motion Arena
Baum��ller

Change to servo-hydraulic

Servo hydraulics

Servo-hydraulic machines combine the advantages of hydraulic power transfer with the advantages of servo-drive technology: High output densities, low inertias and cost-effective and robust drive elements meet dynamic and precise speed control. Energy consumption is thus reduced significantly. Here the low heat and noise development, the high effectiveness and above-average dynamics and precision are typical advantages of servo technology.

Variable adjustment pumps

Electro-hydraulic variable adjustment pumps are also usually powered by asynchronous motors. In these applications, the motor rotates permanently at constant speed, and pressure and volumetric pressure are controlled via axial piston pump.
Using variable adjustment pumps improves the energy balance of the system. But it still results in considerable losses and disadvantages such as the high noise load.

Advantage: Higher energy efficiency than with a combination of asynchronous motor and constant pump, as power loss is lower with the variable adjustment pump.

Disadvantages: Variable adjustment pumps are more expensive than constant pumps - High noise emissions through continuous operation of the standard motor - Asynchronous motor still consumes unused energy in partial load range

Constant pumps

In systems with valve-controlled drives with standard motors and constant pumps, the electro motor permanently rotates with the power frequency. With the constant pump, there is a constant pumping of the volumetric flow. Here proportional valves are used for pressure and volume control.
The acquisition costs for the system as a whole with uncontrolled asynchronous motor are usually lower overall than with other solutions, but the service life costs are comparatively high due to the high energy consumption.

Advantage: Low acquisition costs through the use of standard motors.

Disadvantages:High noise emissions through continuous operation of the standard motor - High costs for the valve technology - High energy consumption through continuous operation at constant speed

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