The NACHI NSP-10E-15VA-21 represents a sophisticated integration of hydraulic and electric drive technologies,embodying the advanced capabilities of a variable displacement pump system.This specific model is a compact,inverter-driven hydraulic unit designed to deliver precise and efficient power on demand.Unlike traditional constant-speed systems,this variable volume pump intelligently adjusts the motor speed through its integrated inverter to match the exact flow and pressure requirements of the application in real-time.This fundamental shift from continuous full-power operation to an on-demand strategy results in remarkable energy savings,reduced heat generation,and lower noise levels.The NSP-10E-15VA-21 is engineered for seamless integration into automated machinery,providing a clean,compact,and highly responsive hydraulic power source for a wide array of industrial applications,from injection molding machines to precision test stands.

　　1.Product Overview and System Integration

　　The NSP-10E-15VA-21 is more than just a pump;it is a complete,self-contained hydraulic power unit.Its core function as a variable displacement pump is achieved not by a variable swashplate,but by controlling the speed of a fixed-displacement pump motor group with a built-in inverter.This system draws three-phase AC power,with standard options for both 200V and 400V classes,and converts it to precisely controlled hydraulic power.The unit is designed for out-of-the-box operation,requiring only a power connection to be ready for use,which significantly simplifies machine design and commissioning for OEMs and end-users alike.

　　The unit's compact and booksize design is a key feature,allowing it to fit into space-constrained machine layouts.Weighing approximately 48 kg,it is a relatively lightweight solution for the power it delivers.The system is designed as a closed,robust unit with a black,semi-gloss finish,contributing to a clean and professional appearance in an industrial setting.

　　2.Technical Specifications and Performance Data

　　The performance of the NSP-10E-15VA-21 is defined by a set of robust technical parameters that ensure its reliability and versatility.

　　Power Supply:It operates on a 3-phase AC supply,compatible with 200-240V/50-60Hz or 380-480V/50-60Hz systems,making it suitable for global industrial power standards.

　　Motor Performance:The model is equipped with a 1.5 kW motor with a 4-pole configuration.The rated input current is 9.7A for the 200V class and 5.9A for the 400V class.

　　Hydraulic Output:The pump offers selectable pressure adjustment ranges,typically from A2(1.5-4.0 MPa)to A4(5.5-8.0 MPa),allowing customization for different application needs.Its no-load output flow is configurable,with options for 14 L/min or 28 L/min,providing flexibility in system speed requirements.

　　Environmental Specifications:The unit is designed to operate within an ambient temperature range of 0 to 35°C and humidity up to 80%RH(non-condensing).The hydraulic oil temperature must be maintained below 60°C for optimal performance and longevity,and the use of mineral-based hydraulic oil equivalent to ISO VG32 is specified.

　　3.Core Technological Features and Design Innovations

　　Inverter-Based Variable Speed Drive

　　The most significant innovation in this variable volume pump is its inverter control.By adjusting the motor speed instead of constantly running at full throttle and dumping excess energy,the unit achieves unparalleled efficiency.Suppliers report energy consumption reductions of up to 69%compared to NACHI's own standard hydraulic units,which directly translates to lower operating costs and a reduced carbon footprint.

　　Enhanced Operational Stability and Precision

　　The variable speed control contributes to exceptional process stability.The system minimizes pressure and flow fluctuations,which is critical for high-precision machining operations.Furthermore,the dramatic reduction in hydraulic oil temperature rise—reportedly as low as a 1.5°C increase over ambient temperature—ensures consistent fluid viscosity and performance.This thermal stability extends the service life of hydraulic seals and the oil itself,leading to lower maintenance costs and higher machine availability.

　　Integrated System Design for Reliability

　　The NSP-10E-15VA-21 is built as a complete system,ensuring all components are perfectly matched.This integration includes critical protections such as a maximum peak pressure limit of 14 MPa(combining set pressure and surge pressure)and a requirement for external circuit leakage to be less than 1 L/min.These design considerations ensure safe and reliable operation and protect the unit from external circuit faults.

　　4.Application Areas and Industry Solutions

　　The NACHI NSP-10E-15VA-21 finds its ideal niche in applications where energy efficiency,compact size,and precise control are paramount.

　　Industrial Automation and Machine Tools:It is perfectly suited for CNC machines,machining centers,and automated assembly lines where its precise control improves product quality and its energy-saving features lower the total cost of ownership.

　　Plastic Injection Molding Machinery:The pump's ability to provide precise flow and pressure during different stages of the molding cycle,combined with its significant energy savings,makes it an excellent choice for modern,eco-conscious manufacturing.

　　Presses and Forming Equipment:These machines often require high power for short durations.The on-demand characteristic of this variable displacement pump avoids wasteful energy consumption during idle periods,making the overall process much more efficient.

　　Quiet and Clean Environments:With noise levels reported to be as low as 53 dB(A),this unit can be installed in settings where noise pollution is a concern,such as in clean rooms or laboratories.

　　5.Operational Advantages and Economic Benefits

　　Substantial Reduction in Total Cost of Ownership

　　The primary economic advantage of the NSP-10E-15VA-21 is its dramatic reduction in energy consumption,which can form the majority of a hydraulic system's lifetime cost.The reported~69%energy saving directly lowers electricity bills.Additionally,reduced heat generation minimizes the need for auxiliary cooling systems,saving further energy and costs.

　　Improved System Longevity and Reliability

　　The gentle operation of the variable speed drive,combined with stable thermal conditions,puts less stress on all hydraulic components.This leads to extended service life for the hydraulic oil,seals,and the pump itself.The result is reduced frequency of maintenance interventions and lower spare parts costs,maximizing machine uptime and productivity.

　　Simplified Integration and Maintenance

　　Designed for ease of use,the unit features a"plug-and-play"philosophy.Its compact,pre-assembled nature reduces the engineering and installation time for machine builders.Centralized diagnostics and simple control interfaces also streamline troubleshooting and routine checks,reducing the required skill level for maintenance personnel and associated labor costs.

　　Frequently Asked Questions(FAQs)

　　How does the inverter drive in this unit achieve energy savings compared to a traditional variable displacement pump?

　　A traditional variable displacement pump uses a constant speed motor and varies the pump's displacement mechanism(like a swashplate)to regulate flow,which can still be inefficient at low flows.The NSP-10E-15VA-21 uses a fixed-displacement pump and an inverter to directly control the motor's rotational speed.Since the pump's flow is proportional to its speed,reducing the motor speed when full flow isn't needed directly reduces electrical power input.This method eliminates the energy losses associated with constant-speed motors and bypass valves,leading to the reported savings of up to 69%.

　　What are the critical installation and operational considerations for this hydraulic unit?

　　For reliable operation,several factors must be considered.The unit must be installed in an environment with an ambient temperature between 0-35°C and protected from condensation and water-soluble cutting fluid mist.The external hydraulic circuit must be designed to ensure that the peak pressure(set pressure plus surge pressure)does not exceed 14 MPa and that external leakage is limited to less than 1 L/min.Additionally,a hose with an internal diameter of 1/2 inch and a minimum length of 2m should be used at the pump outlet to dampen pressure surges.

　　Can this unit be used for applications requiring frequent start-stop cycles?

　　No,it is explicitly advised against using the main circuit breaker for frequent start-stop cycles,as this will significantly shorten the inverter's lifespan.The manufacturer recommends limiting such power cycle operations to less than once per hour.For applications requiring frequent cycling,an alternative control method should be implemented,and it is recommended to consult with NACHI for guidance.

　　What makes this pump unit particularly suitable for high-precision manufacturing processes?

　　Its suitability stems from the exceptional stability provided by the inverter-driven system.By precisely controlling motor speed,the unit eliminates the pressure and flow pulsations common in traditional pumps.This results in smoother actuator movement,which is crucial for precision machining,injection molding,and testing applications.The stable operation also minimizes vibrations that can affect machining accuracy.

　　How does this system contribute to environmental sustainability goals?

　　The NSP-10E-15VA-21 contributes to sustainability through multiple avenues.Its high efficiency directly reduces electricity consumption,thereby lowering the associated CO2 emissions—suppliers note a potential reduction of about 2 tons annually.Furthermore,the extended life of hydraulic oil and components reduces the consumption of raw materials and the generation of waste oil,supporting a circular economy and minimizing the environmental footprint of industrial operations.