Summary of Contents for Nachi NSPi Series
- Page 1 Global Suppliers of Premium Hydraulic Components UK Distributors for Nachi Hydraulics T: +44(0)1172 130042 E: sales@zeushydratech.com W: zeushydratech.com...
- Page 2 Instruction Manual Energy-saving variable pump unit Inverter drive ＮＳＰｉseries Model number：ＮＳＰ－※※Ｅ－※※※Ｖ※Ａ※－※※－２３ Picture : Inverter drive ＮＳＰｉseries September.2022...
- Page 3 Overview This Instruction Manual explains how to handle and maintain/inspect the inverter drive hydraulic unit NSPi series. Ensure to read this manual before using the unit and keep it accessible for quick reference as needed. Prior to operating the unit, please read the Inverter Instruction Manual also. Note) The Inverter Instruction Manual mentioned in this manual refers to the instruction manual of inverter “FRENIC-Ace”...
- Page 4 For Your Safety - Must follow these signs for safety precautions. Warning symbol below: Risk of Getting Caught by Parts (Clamping Accident Hazard) Touching the rotating fan will cause injury. Do not run the unit with the fan cover removed. Do not insert fingers or tools through any openings.
- Page 5 Important: Environmental Protection Be sure to pay full attention to prevent hydraulic fluid outflow. By any chance should any fluid leak out, wipe it off immediately without leaving any behind. Fluid drainage into the sewer system can cause environmental pollution and/or fire, and adhesion to the floor is very dangerous as floor gets slippery.
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Page 6: Table Of Contents
Table of Contents Overview ..............................5 Features ..............................5 Specifications ............................. 6 Explanation of Model Numbers ......................... 7 Hydraulic Circuit and Unit Installation Dimensions ..................8 Hydraulic Circuit Diagram and Components ..................8 Unit Installation Dimension Drawings ....................8 Transportation/Installation ......................... 9 Before Running the Unit .......................... -
Page 7: Overview
Inverter drive hydraulic unit NSPi series is the same as the NSP series of energy-saving hydraulic units for machine tools, but an inverter drive has been added to achieve greater energy savings for its compact body. -
Page 8: Specifications
Specifications 200V class series 400V class series 1. Power supply 3φ200 to 220VAC, 50/60Hz 3φ380 to 480VAC, 50/60Hz 2. Rated input current 9.5A/1.5kW 5.9A/1.5kW (Excluding the value of fan cooler current) 13.2A/2.2kW 8.2A/2.2kW 3. Adjustable pressure range A2:1.5 to 4.0MPa A3:3.5 to 6.0MPa A4:5.5 to 8.0MPa 4. -
Page 9: Explanation Of Model Numbers
Explanation of Model Numbers N S P - 1 0 E - 1 5 * V 0 A 2 - * * - 2 3 Design number Option G: Fluid level gauge guard H: Temperature switch (Note 1) M: Magnet separator (Note 2) S: Float switch (Note 1) (Note 2) X1: Fan cooler for 1φ230VAC (Note 3) X2: Fan cooler for 24VDC (Note 3) -
Page 10: Hydraulic Circuit And Unit Installation Dimensions
Hydraulic Circuit and Unit Installation Dimensions Hydraulic Circuit Diagram and Component parts (with plug) Optional port Part Name Part Name (Above (Above fluid level) fluid level) Hydraulic fluid Fluid level gauge reservoir Suction strainer Fan cooler Uni-pump Pressure sensor Pressure gauge Inverter control kit Air breather with filling strainer... -
Page 11: Transportation/Installation
Transportation/Installation When transporting this hydraulic unit, always use the eye bolts attached on the top plate of the fluid reservoir and never hold any of the pipes/hoses or equipment by hand. Also, do not transport the unit while hydraulic fluid is still left in the fluid reservoir. Install the unit in a place meeting the conditions for ambient environment according to the specification. -
Page 12: Power Supply Wiring
Power Supply Wiring Cautions - Please be sure to read the below statement. 1. Never wire the power supply other than the methods explained in this manual. 2. Never change the inverter parameters other than those listed in this manual due to a risk of malfunction. - Page 13 Note) For input power of 200V class series with option X1, X2 and X3 and input power of 400V class series, an additional power supply wiring from For 200V class series outside of the inverter control input power: to the fan motor is required 3φ200 to 220VAC, 50/60Hz separately.
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Page 14: Adjusting The Pressure And Output Flow
9. How to Adjust Pressure and Output Flow This hydraulic unit was shipped from the factory in motor/pump operation-ready condition as soon as the power is turned on. Turn on the power after confirming that there is no danger even if the pump rotates and discharges pressurized oil, and no harm to the facilities. - Page 15 Adjust the pump flow rate based on the relationship between the turning angle of the flow rate adjustment screw and the pump capacity as shown below. After adjusting the flow rate, securely tighten the lock nut on the flow rate adjustment screw. Note) 0°...
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Page 16: Optional Wiring
10. Optional Wiring 10.1 Optional Signal (Input) Alarm reset Resets the ongoing set alarms of inverter. Alarms are reset when the REV terminal and CM terminal are shorted with a pushbutton switch, programmable logic controller contact output, or open-collector output. External start/stop Starts and stops the pump by using external contacts or open-collector output. - Page 17 【Reference】Optional Signal (Input) Wiring Method Relay contact and open-collector can be used as optional signal (input) wiring method. Refer to the following example of the circuit configuration and perform wiring. Using a relay contact to turn [FWD], [REV], [X1] ON or OFF Fig.
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Page 18: Option Signal (Output)
10.2 Optional Signal (Output) Alarm output When an alarm triggered in inverter, an alarm signal is output between the 30C terminal and 30A terminal or 30B terminal. The contact between 30C terminal and 30A terminal is open at normal condition, and closed at abnormal occurrences. - Page 19 Pressure switch function When the pressure detected by the pressure sensor mounted on the hydraulic unit rises to or above the set pressure (operation level) and continues for longer than the pressure switch ON delay time, the contact signal turns ON. Once the detected pressure falls to or below 90% of the set pressure (operation level), the contact signal turns OFF immediately.
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Page 20: Terminal Block For Option Wirings
Note) The contact output circuit of the pressure switch can be connected to a circuit of either the SINK input type or SOURCE input type. The followings show examples of connection between the contact output circuit of the pressure switch and a programmable logic controller (PLC) . In example Fig. -
Page 21: Checking The Operating Condition
11. Operating Condition Check 11.1 Check by Inverter LED Monitor When press the inverter touch panel Function/Data key repeatedly during normal operation, the items displayed on the LED monitor will change one by one (see Fig. 13) and the different information can be confirmed. -
Page 22: Checking By Rs-485 Communication
11.2 Check by RS-485 communication By connecting to the RS-485 communication port (RJ-45 connector) mounted on the inverter, operating condition such as power and pressure, as well as alarm and maintenance information, etc. can be confirmed. For details on the communication method, refer to the communication method for “FRENIC-Ace” in the FRENIC-Mini/Eco/Multi/MEGA/Ace RS-485 User's Manual (Document no. -
Page 23: Maintenance/Inspection
12. Maintenance and Inspection Operating hydraulic unit with advanced hydraulic fluid degradation not only shortens the life of the hydraulic equipment, but also hinder the operation of the machine. Periodically check and replace the hydraulic fluid. When replacing, be sure not to mix with different type of hydraulic fluid. The timing of hydraulic fluid replacement varies depending on the machine operating conditions and the surrounding environment, but a guide line, first replace fluid after three months, and then... -
Page 24: 13. Troubleshooting
13. Troubleshooting The rotation speed does not increase even when the pump discharges without load. The set pressure of the pump may have been changed. When changing the set pressure of the pump, perform pressure setting again according to the procedures described in 9, "How to Adjust Pressure and Output Flow."... - Page 25 ② Open the terminal box of the motor and remove the motor wires U, V, W and the grounding wire G that were connected with the inverter. Just in case, insulate the crimp terminal parts of the removed wires by wrapping with an insulating tape, etc. Insulating tape Remove the motor wires (U, V, W) and the grounding wire (G).
- Page 26 The hunting of the motor rotation speed occurs around the pump full cutoff. The pump setting pressure may have been changed. When changing the pump setting pressure, perform pressure setting again according to the procedures described in 9, "Adjusting the Pressure and Output Flow."...
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Page 27: 14. Safe Torque Off Function
14. Safe Torque Off Function Inverter includes the Safe Torque Off function (STO) specified in the Safety Standard IEC/EN 61800-5-2. Using this function ensures compliance with the System Safety Standard EN ISO 13849-1:2006 PL=e Cat.3 without installing a safety shut-off device outside of the inverter. Contact us for more detail.
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