The REXROTH VT-VSPA1-1-11 is a high-performance proportional amplifier introduced by Bosch Rexroth. It belongs to the VT-VSPA series and is specifically designed for the precise control of proportional hydraulic valves in industrial automation systems.
Core function
Precise Control
By adjusting the current of the electromagnetic valve, precise control of the proportional pressure valve and proportional flow valve is achieved, ensuring the stability and response speed of the hydraulic system.
Support for various valve types, including DBEP, DBE(M), DRE(M), ZDRE, etc., covering a wide range of application scenarios.
Flexible Configuration
Analog Input: Supports differential input, which can switch between v
oltage (±10V) or current (4-20mA) signals, adapting to different control requirements.
Slope Generator: Can independently adjust the rising and falling slope time (20ms to 5s, or extended to 0.2-50s), achieving a smooth signal transition.
Parameter Storage: Configurations are saved in non-volatile flash memory, with a maximum of 16 sets of parameters, supporting quick invocation.
Protection and Diagnosis
Reverse Polarity Protection: Prevents equipment damage caused by reversed power supply.
Fault Detection: Identifies 4-20mA signal breakage or select input failure, and prompts the user through LED indicator lights and fault output (low-level signal).
Winding Short Circuit Protection: Avoids damage to the amplifier caused by short-circuit of the electromagnetic valve winding.
Technical Specifications
Power Supply: 24V DC, voltage range +40%/-20%, maximum power consumption 50VA, maximum current 1.8A.
Output: Adjustable range of electromagnetic valve current from 800mA to 1600mA, output command signal ±10V (accuracy ±2%). Input:
Differential command values 1-4: ±10V, input impedance >100kΩ.
Command value 6 (current input): 4-20mA, input impedance 100Ω.
Differential command value 5: ±10V, input impedance >50kΩ.
Connector: 48-pin DIN 41612 (F-type), supports local bus interconnection for up to 32 amplifiers.
Environmental adaptability: Operating temperature 0-50℃, storage temperature -25 to +85℃, suitable for harsh industrial environments.
Application scenario
Industrial Automation: Used to control the pressure, flow, and direction of hydraulic systems, suitable for machines such as machine tools, injection molding machines, and die-casting machines.
Mobile Machinery: In fields like construction machinery and agricultural machinery, it enables precise control of hydraulic systems, enhancing equipment performance and efficiency.
Energy and Manufacturing: In industries such as steel, energy, and shipping, it is used for the stable operation and efficient management of hydraulic power units.
Summary of Advantages
High Precision and Stability: Through microcontrollers and advanced algorithms, it ensures precise control of hydraulic valves, reducing system fluctuations.
Flexibility and Scalability: Supports various valve types and input signals, with parameters freely configurable, adapting to different application needs.
Reliability and Durability: Equipped with complete protection functions and diagnostic mechanisms, it can operate stably in harsh environments for a long time.
Easy Integration: Uses standard European board card format (100x160mm), facilitating installation and interconnection, reducing the complexity of system design.
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