Piston pump controller ECO SERVO

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Overview
The ECO SERVO variable-speed control system provides precise rotation and flow control for high-pressure, large-capacity piston pumps. Based on extensive Kawasaki pump experience, it enables accurate flow and pressure regulation while supporting energy-saving operation and reduced actuator noise.

Features

• Designed for use with KAWASAKI piston pumps (K3VL, K7VG series). Peak pressure: 35 MPa; maximum discharge up to 600 L/min (500 cm3 pump displacement available).
• Suitable for both open and closed hydraulic circuits; available standard pumps for open circuits and special pumps with suction valve for reversible high-pressure closed circuits.
• Employs a variable-displacement pump with two displacement settings to reduce required drive torque and motor capacity.
• Compatible with both servo drives and inverter drives.
• Combined with the dedicated ECO SERVO controller, enables high-accuracy control of position, pressure and flow.

Specifications

• Pump displacements (cm3): 22, 45, 80, 140, 200, 500 (500 cm3 available individually).
• Inverter drive — motor capacity (kW): 7.5, 11, 22, 30, 30, 37, 45, 55, 75, 90; rated torque (N·m) and max torque (N·m) available per selection.
• Servo drive — motor capacity (kW): 5, 7, 7, 11, 11, 15, 37, 45, 45, 55; rated and max torque values vary by model.
• Pump pressure — max operating: 32 MPa; peak: 35 MPa.
• Max speed: typically 2,000 min-1 (open circuit) / 1,800 min-1 (closed circuit), depending on configuration.
• Hydraulic fluid: antiwear hydraulic fluid.
• Supply voltage/frequency: 200–230 V, 380–480 V, 50/60 Hz.

Notes

• *1 For combinations of pump displacement and motor capacity not listed, contact Kawasaki.
• *2 Rated motor speed is 1500 min-1 (2000 min-1 only when servo drive rated at 5 kW or 7 kW).
• *3 Maximum torque values are short-time ratings; select drives so effective torque per cycle is below rated torque.
• *4 Maximum speed may be limited by operating conditions and duty cycle.
• *5 For hydraulic fluids other than those specified, contact Kawasaki for technical support.
• *6 The 500 cm3 pump displacement is available as an individual option; consult Kawasaki when considering this capacity.

Benefits

• Energy-saving operation through optimized pump speed and displacement control.
• Improved controllability of position, pressure and flow for precision industrial applications.
• Simplified maintenance and system integration when combined with dedicated controller options.

Applications

• Plastic machinery and die casting
• Press machines
• Metal processing plants
• Marine and oceanic machines

Technical specifications

• Product family/model: ECO SERVO
• Piston pump series: KAWASAKI K3VL, K7VG
• Peak pressure: 35 MPa; max operating pressure: 32 MPa
• Max discharge: up to 600 L/min (with 500 cm3 pump)
• Pump displacements covered: 22, 45, 80, 140, 200, 500 cm3
• Drive compatibility: inverter drive and servo drive; variable-displacement pump with two displacement settings
• Hydraulic fluid: antiwear hydraulic fluid
• Supply voltage/frequency: 200–230 V, 380–480 V, 50/60 Hz
• Max speed: up to 2,000 min-1 (open circuit) / 1,800 min-1 (closed circuit), depending on configuration