Control of proportional valves in hydraulics with modules from WEST Elektronik
Control of proportional valves
A few examples on our proportional demonstrator.
A pulse width modulated DC voltage (PWM) is required to control a proportional valve in hydraulics. This PWM signal enables fine control of the valve.
We obtain the PWM signal by using the WEST power amplifiers, valve amplifiers or colloquially also chopper amplifiers (from the English chop = to chop), are used to control proportional valves.
Control hydraulic motor
In the first example, we show you a hydraulic motor that we control with a 4/3-way proportional valve. The proportional control of the valve using the PAM-199 allows us to individually adjust the speed and direction of rotation. This can be used to control and drive travel drives, conveyor drives, cable winches, etc. in a controlled manner.
Synchronization of hydraulic motors
In the second example, we have realized the synchronization of two hydraulic motors. Here too, the motors are controlled by 4/3-way proportional valves. In contrast to the first example, an SCU-139-P is used here. This module, paired with two speed sensors, enables the two hydraulic motors to be operated in synchronization. If the speed of one of the motors is influenced, e.g. by an external force, the module controls the second motor so that both rotate at the same speed/slowly again.
Hydraulic cylinder with position measuring system
In the last example, we put a cylinder with a position measuring system via POS-323-P into operation. The special feature here is the integrated commissioning assistant developed by WEST. This enables the cylinder to be commissioned quickly and easily. Based on the input of a few basic parameters, the module determines the remaining parameters independently. The commissioning wizard offers various functions that can be used individually, in combination or as a complete package. This includes determining and parameterizing the sensor range used, the polarity, any offset, the positive overlap and the possible maximum speed. The position controller can also be parameterized on the basis of a dynamic analysis.
Do you have any questions about the examples or do you have a specific project that we can support you with? Please feel free to contact us:
Lars.benk@schuhmacher-tech.de,+49 7424-9595-663
Lars Benk: Profile of a field-tested expert
Basic training: Tool mechanic, specializing in stamping and forming technology.
Further training: State-certified technician with a focus on mechanical engineering.
Additional qualification: Degree in technical business administration, combining technical know-how with business expertise.
Professional experience: More than a decade of active work in the field of hydraulics.
Specialization: Certified specialist in oil analysis (MLA II – Machine Lubrication Specialist), with a specific focus on the maintenance and optimization of machines through professional lubricant analysis. Certified specialist for hydraulic fluids – specialist knowledge for optimal hydraulic systems.
