The size is interchangeable due to compliance with ISO standards. The type that sets parameters via the fieldbus interface has real-time diagnostic functions.
The mounted digital driver controls the hydraulic pressure of the valve according to the command signal. The digital hydraulic equipment features high performance with over 20 types of alarms, compared to the analog system which only has diagnostic functions for fault signals. Additionally, due to the use of digital information that is less susceptible to noise, it has high resistance to electromagnetic noise. Explosion-proof specifications are also available. 【Features of Digital Hydraulic Equipment】 ■ More functions and parameters (e.g., linearization, PID) ■ High reproducibility and numerical soft setting ■ Enhanced diagnostic functions… open circuit detection, control monitoring, temperature range, etc. ■ Direct fieldbus interface … improved accuracy and durability, more information available … direct connection to the machine's communication network … CANopen / PROFIBUS DP / EtherCAT 【Specifications】 ■ Types: Directional control valve, pressure control valve, flow control valve ■ Sizes: 06, 10 (2-stage) 10 - 32 ■ Flow: Maximum 70–3500 L/min ■ Pressure: Maximum 350 bar
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basic information
We handle not only various digital proportional control valves but also "digital servo hydraulic cylinders" equipped with digital servo proportional valves. Digital servo hydraulic cylinders are capable of not only controlling the operation of hydraulic cylinders but also achieving high-precision position control, along with simultaneous speed and force control. 【Features】 ■ High control precision Linearity: Maximum ±0.01%/full stroke Reproducibility: Maximum ±0.001%/full stroke Hysteresis: Below 4μm Maximum speed: 2m/sec 【Specifications】 Operating pressure: Rated 160 bar, Maximum 250 bar Size: Bore from 40 to 200 mm, Stroke up to 4000 mm Cylinder dimension specifications: ISO 6020-2 Valve control driver included, Fieldbus compatible Position feedback transducer included (Magnetic strain type, Inductive type, Resistive type, etc.) Low-friction special seals, High-temperature options available ◎ For more details, please contact us or download the catalog.
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Applications/Examples of results
■Examples of Applicable Applications Sewing/Bending Machines, Steelmaking, Plastics, Rubber, Energy, Furnaces, Valve Opening and Closing, Flight Simulators, Steam Turbine Governor Control, High-Precision Position Control, High-Precision Speed Control, Presses, Amusement Machines, Fail-Safe Systems, Railways, Ships, Factory Equipment, Vibration Testers, Wind Power Generation Pitch Control, Injection Molding Machines, etc.
Detailed information
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Digital Proportional Control Valve Cross-Section Example
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Multi-axis simulator Usage example Aircraft control simulator
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Applicable application examples: Wind power generation pitch control
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Digital Servo Cylinder Cross-Section Example
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Company information
Since our establishment, TOHTO has valued the trust and achievements we have cultivated, providing our customers with hydraulic equipment and related devices along with our extensive experience and services. We will continue to enhance our product lineup to meet the diverse needs of various industries and applications, and conduct performance evaluations to respond to the required demands and technical challenges at a higher level, ensuring the ideal supply of products in the future.