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Hydraulic Equipment

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Energy-Saving Variable Pump Unit
NSPi series Inverter drive hydraulic unit

Specifications

Power-supply voltage 3Ø AC200 to 240V, 50/60Hz(200V Class)
3Ø AC380 to 480V, 50/60Hz(400V Class)
rated input current 9.7A/1.5kW, 13.4A/2.2kW(200V Class)
5.9A/1.5kW, 8.2A/2.2kW(400V Class)
Note) In the 400V grade the input current value for the fan cooler is not included.
Pressure adjustment range A2:1.5 to 4.0MPa
A3:3.5 to 6.0MPa
A4:5.5 to 8.0MPa
Discharge amount (no-load) 0A* : 14L/min
1A* : 28L/min
HYDRAULIC OILs Standard mineral-based hydraulic fluid (equivalent to ISO VG32)
OIL TEMPERATURE Use at temperatures below 60°C.
color black (Semi-gloss)
ambient temperature / humidity 0 to 35°C/20 to 80%RH (No condensation)
(Keep the unit away from water-soluble cutting fluid mist. )

Mounting dimensions

Type Motor
(kW-P)		 Measurment Approximate mass
(kg)
LA LB LC LD LE LF LG LH LI H L
NSP-10E-15V*A*-21 1.5-4 510 5 501 265 236 164 119 172 30 10L 8.5L 48
NSP-10E-22V1A*-21 2.2-4 540 35 521 256 174 129 55
NSP-20E-15V1A*-21 1.5-4 510 5 601 365 236 164 119 252 50 20L 16L 51
NSP-20E-22V1A*-21 2.2-4 540 35 621 256 174 129 58

·approximate mass, Does not include the hydraulic fluid

Explanation of model No

Hydraulic circuit diagram

Precautions for use

  • Turning the inverter on and off by cutting the main power supply (circuit breaker) significantly reduces the life of the inverter and should be limited to once an hour or less. Contact us if you need to start and stop operations frequently.
  • Do not change the inverter’s parameter settings.
  • Use a 1/2 inch diameter two meter long flexible hose rated for maximum 14 MPa working pressure to connect the hydraulic unit’s P port (discharge port) and the external manifold (or actuator).
  • Maximum peak pressure (set pressure + surge pressure) must be within 14 MPa. Install a relief valve on the hydraulic circuit side to cut surges if peak pressure is higher than 14 MPa.
  • Volume of leakage on external hydraulic circuits must be less than 1 L/min. Consult us if leakage on the external hydraulic circuit is greater than 1 L/min.
  • The volume of hydraulic fluid in the tank must stay within the range visible on the fluid level gauge (10L tank: approximately 1.5 L, 20L tank: approximately 4L).
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