Nidec Neptune NPTA150 Installation And Operation Manual
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Nidec Neptune NPTA150 Installation And Operation Manual

Nidec Neptune NPTA150 Installation And Operation Manual

Variable speed pool pump motor
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Installation and Operation Manual
Models: 1.5 THP, 1.65 THP,
2.25 THP, 2.7 THP, and 3.45 THP
Catalog Numbers for THP Listing: NPTA150, NPTT165, NPTT225,
NPTT270, NPTT345, NPTQ165, NPTQ225, NPTQ270, NPTQ345
Programmable Pool Pump Motor/Control
This product does NOT provide a Safety
Vacuum Release System (SVRS).
Save this instruction manual for future reference.
Part #: M018485550000
Revision Date: March 11, 2025

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Summary of Contents for Nidec Neptune NPTA150

  • Page 1 Installation and Operation Manual Models: 1.5 THP, 1.65 THP, 2.25 THP, 2.7 THP, and 3.45 THP Catalog Numbers for THP Listing: NPTA150, NPTT165, NPTT225, NPTT270, NPTT345, NPTQ165, NPTQ225, NPTQ270, NPTQ345 Programmable Pool Pump Motor/Control This product does NOT provide a Safety Vacuum Release System (SVRS).

  • Page 2: Table Of Contents

    Table of Contents Important Safety Information ......................2 Neptune ™ 1.50, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor ............4 Features ..........................4 Dimensions ..........................5 Electrical Requirements ........................8 Input ............................8 Rated Output .......................... 9 Agency ........................... 9 Installation Instructions.........................

  • Page 3: Important Safety Information

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Important Safety Information Read all instructions thoroughly and be familiar with the equipment before installing or working on it. • DO NOT lift the pool pump motor by the control unit. •...
  • Page 4 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor • Always disconnect electrical power at the fuse box or circuit breaker panel before handling electrical connections or performing maintenance on this unit. Allow the pool pump motor to come to a complete stop and wait four (4) minutes.

  • Page 5: Neptune ™ 1.50, 1.65, 2.25, 2.7, & 3.45 Thp Pool Pump Motor

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Neptune 1.50, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor ™ The Neptune ™ 1.50 - 3.45 Total Horsepower (THP) Variable Speed Pool Pump Motor is a premium efficient product that includes a fully integrated motor, control, and User Interface (UI).

  • Page 6: Dimensions

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Dimensions Square Flange All dimensions are in inches and for reference only. Side View Fan View Shaft View I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...
  • Page 7 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor C-Flange All dimensions are in inches and for reference only. Side View Fan View Shaft View I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...
  • Page 8 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Thru Bolt with Base All dimensions are in inches and for reference only. Side View Fan View Shaft View I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...

  • Page 9: Electrical Requirements

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Electrical Requirements 1.50 & 1.65 THP are Dual Voltage Models (115 or 230 Vac) while the 2.25 THP, 2.7 THP, & 3.45 THP are Single Voltage Models (230 Vac only). Voltage selection is automatic. On Dual Voltage Models, the control senses the input line voltage and operates the pool pump motor at the applied input voltage.

  • Page 10: Rated Output

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Rated Output The unit is rated for the following maximum torque outputs: 1.50 THP 1.65 THP 2.25 THP 2.70 THP 3.45 THP 27 in-lb 30 in-lb 41 in-lb 49.2 in-lb 63 in-lb 600-3450 RPM...

  • Page 11: Installation Instructions

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Installation Instructions Follow these instructions to prolong the life of the pump motor and control. Install the product on a secure and level platform or base, such as a concrete pad. Installation, operation, and maintenance must be performed by qualified personnel.

  • Page 12: Wire The Pool Pump Motor

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Wire the Pool Pump Motor 1.50 & 1.65 THP pool pump motors are Dual Voltage Models (115 or 230 Vac), while the 2.25, 2.7, & 3.45 THP are Single Voltage Models (230 Vac only). Voltage selection is automatic on the Dual Voltage Models.
  • Page 13 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor 4. Insert the power cable and use a water-tight connector to seal the conduit hole (1/2-14 NPT thread). 5. Install the AC and Ground power input wires as specified on the motor nameplate. You must connect L1, L2, and GND (Green Screw) in the wiring compartment correctly and securely.

  • Page 14: Wire A Time Clock (Optional)

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Wire a Time Clock (Optional) The pool pump motor has the ability to connect and communicate with any time clock, which will then control all the time features related to the motor. Note: If the homeowner prefers to use the existing Time Clock to control operation of the filtration pump, the Neptune Motor has the ability to connect and communicate with any Time Clock.

  • Page 15: Wire An Auxiliary Load Relay (Optional)

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Wire an Auxiliary Load Relay (Optional) The Auxiliary Load Relay automatically closes when the pool pump motor is operating at 2100 RPM so that you can activate an external pool accessory that is dependent on a specific flow rate, e.g., a chlorine generator, pool heater, or cleaner.

  • Page 16: Pump Control Via The User Interface

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Pump Control via the User Interface The User Interface (UI) enables you to program the operation of the pool pump motor. Generally, the buttons have two functions. Navigation Mode allows you to move back and forth between the different menus and settings.

  • Page 17: Quick Start Guide

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Quick Start Guide The Neptune 1.50 - 3.45 THP Variable Speed Pool Pump Motor ships with a Quick Start Guide ™ attached to the inside cover of the User Interface lid. If it is missing, the Quick Start guide is replicated here.

  • Page 18: Timer Features Enabled (Default)

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Timer Features Enabled (Default) The motor/control ships with Timer Features Enabled. All default settings are listed on page 55. There are three (3) top-level menus in Manual Timer Mode: My Pool Settings, Install Settings, and Timer Settings.

  • Page 19: Install Settings

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Install Settings I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...

  • Page 20: Timer Settings

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Timer Settings I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...

  • Page 21: My Pool Settings

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor My Pool Settings Options under My Pool Settings allow you to set temperature readings to Fahrenheit or Celsius, priming duration and speed, low temperature monitoring and threshold, remote system monitoring, or a reset to default values.
  • Page 22 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Press Scroll Up or Scroll Down to increase or decrease the digit. View Version Numbers Screens under this option are used for diagnostic purposes. They are informational only. Press Scroll Up or Scroll Down to toggle the option to Yes.

  • Page 23: Install Settings

    Node ID, the UI no longer plays a role in motor communication. For information on connecting an external controller, refer to the RS-485 Port on page 40. Contact US Motors / Nidec Motor Corporation for the proper communication protocol. If an external controller is used, make sure the line is an isolated, non-grounded connection.

  • Page 24: Timer Settings

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor decrease the number in increments of ten (10). Press and hold the Scroll Up or Scroll Down button continuously to increase or decrease the number in increments of one hundred (100). Disable Remote Control If Remote Mode is enabled, follow these steps to return control of the pump to the UI.
  • Page 25 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Press Scroll Up or Scroll Down to increase or decrease the Hour. Press MENU/ENTER to cycle the edit field to the right. Press Scroll Up or Scroll Down to increase or decrease the Minutes. Press MENU/ENTER to cycle the edit field to the right.

  • Page 26: Timer Features Disabled (Doe Scheduling)

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Timer Features Disabled (DOE Scheduling) Dedicated Purpose Pool Pump (DPPP) regulations are aimed to achieve improved energy efficiency and are being driven by the Department of Energy (DOE). These regulations state that self-priming filtration pumps past a certain horsepower threshold—whether residential or commercial—must meet an established performance standard.

  • Page 27: Menu Trees

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Menu Trees My Pool Settings I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...
  • Page 28 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Install Settings I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...

  • Page 29: My Pool Settings

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor My Pool Settings Options under the My Pool Settings allow you to set temperature readings to Celsius or Fahrenheit, priming duration and speed, low temperature monitoring and threshold, remote system monitoring, or reset configurations to default values.
  • Page 30 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor View Version Numbers Screens under this option are used for diagnostic purposes. They are informational only. By default, the screens are hidden. Press Scroll Up and toggle the option to Yes. MC Version This screen displays information about the Motor Control Version.

  • Page 31: Flow Adjustment

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Pump Off Time Start This setting specifies the start time that the motor is to be off. Press Scroll Up or Scroll Down to increase or decrease the Hours. Press MENU/ENTER to cycle the edit field to the right and adjust the Minutes.

  • Page 32: Install Settings

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Install Settings The navigation features are specific to each screen option. For general navigation, refer to the Interface Buttons on page 16. After adjusting a value, you must press MENU/ENTER to save the changes. Time of Day Pump activity is keyed to this setting.
  • Page 33 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Press Scroll Up or Scroll Down to select Calculate. Press MENU/ENTER to accept the selection. Input Mode is automatically activated on entry. Pool Shape (Calculate) There are three options for Pool Shape: Rectangle, Oval, or Round. Press Scroll Up or Scroll Down to select the Pool Shape.

  • Page 34: Pump Capacity

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Pump Capacity There are two options for Pump Capacity. If you know the Pump Capacity, select Manual and enter the number of gallons per minute (GPM). If the capacity is unknown, select Calculate, and have the pool pump motor calculate the estimated capacity based on Total Horsepower (THP).
  • Page 35 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Edit DOE Speeds The running time of the pool pump motor is divided into four (4) operating speeds grouped into lower and higher ranges. No more than half of the motor running time in a given day is at higher speeds. If you adjust one of the DOE Speeds and save the setting, the next time the cycle runs it will run at the speed you selected.
  • Page 36 Node ID, the UI no longer plays a role in motor communication. For information on connecting an external controller, refer to the RS-485 Port on page 40. Contact US Motors / Nidec Motor Corporation for the proper communication protocol. If an external controller is used, make sure the line is an isolated, non-grounded connection.

  • Page 37: Keypad Lockout

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Keypad Lockout Lock the Menus You can lock the menus to prevent unintended modifications to the settings and schedules. With the motor in Standby Mode, press the MENU/ENTER button and hold the button down for three (3) seconds.

  • Page 38: Clean And Override Operations

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Clean and Override Operations The clean operation always runs at 3450 RPM for 30 minutes. Pressing a Speed button cancels the clean and the associated timer. The motor then shifts to the speed associated with the Speed button.

  • Page 39: Pump Control Via The Di Board

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Pump Control via the DI Board The Drive Interface (DI) Board is powered by an isolated low voltage (+12 Vdc) power supply. The DI Board supports the following customer inputs, in addition to the User Interface: Four (4) Discrete Switch Inputs •...

  • Page 40: Control Panel Connections

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Terminals and Function Terminal Function TB4-6 +12V TB4-5 INP #1 TB4-4 INP #2 TB4-3 INP #3 TB4-2 INP #4 TB4-1 Control Panel Connections Low voltage can be supplied from the Control Panel side. This should be a continuous source of voltage.

  • Page 41: Rs-485 Port

    Remote Control and possibly the Node ID, the UI plays no role in communication. Contact US Motors/Nidec Motor Corporation for the proper communication protocol. If an external controller is used, make sure the line is an isolated, non-grounded connection.
  • Page 42 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Wire a Remote Connection Attach any RS-485-compatible cable to the RS-485 Port. RS-485 Port RS-485 Port on the DI Board Follow these steps to wire a remote connection: 5.

  • Page 43: Wire An External Pool Control System (Optional)

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor RS-485 Connection Guidelines For the simplest installation, the maximum length of bus wire from master to the very last slave • should be less than 500-600 feet. Greater lengths of wire require a special termination at each end of the bus.
  • Page 44 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Before connecting or disconnecting cables or other electrical connections, verify that the electrical • power to the system is removed. Failure to comply may cause serious damage to the pool pump motor or pump system or injury.
  • Page 45 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Manufacturer Wiring Configuration Hayward ® Jandy Fluidra ® ® Pentair ® PoolSide Tech ™ Waterway I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l...

  • Page 46: Dip Switch To Identify A Pool Control System

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor 5. The external pool control system is now connected to the pool pump motor. Ensure that the UI cable is routed safely on the Low Voltage side of the control. 6.

  • Page 47: Protections

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Protections The unit is designed to protect itself in the event of a fault situation. Fault handling is defined below: The control unit disables power to the pool pump motor. (The motor will coast to a stop.) •...

  • Page 48: Hardware Protection

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Hardware Protection Fuse Protection The unit includes fuse protection to meet UL ® component failure testing. Fuses are not user-serviceable and are intended to last the life of the product. Inrush Protection The inverter limits inrush current to less than 150A peak surge.

  • Page 49: Troubleshooting

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Troubleshooting This troubleshooting guide provides field technicians with a step-by-step process for accurately diagnosing and troubleshooting certain problems experienced by the pool pump motor. However, this section does not override or replace instructions suggested by the manufacturer of the pump system.

  • Page 50: General Troubleshooting

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor General Troubleshooting Symptom Possible Cause Corrective Action Incorrect voltage Verify that the motor voltage to the terminals matches the to the motor nameplate voltage requirements. Motor fails to start.

  • Page 51: Fault Conditions

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Fault Conditions The pool pump motor is designed to protect itself in the event of a fault condition. Should the motor encounter a fault, the Error light on the integrated UI illumines and the LCD displays basic information on the error.
  • Page 52 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor specified threshold, the motor stops to prevent the power module from overheating and causing damage to the motor. The temperature of other parts of the motor control can also be elevated during operation and the control will attempt to reduce the temperature by reducing motor output power.
  • Page 53 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor E 16 – Motor Stalled This fault indicates that the motor shaft is unable to turn. When the software detects this condition, the motor automatically shuts down and restarts. The pump cycles through the Shutdown/Restart sequence several times to correct the fault condition.
  • Page 54 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor E 30 – Options profile is corrupt This is another type of memory failure. Refer to E 29 for a description and possible corrective actions. E 31 – Power loss profile is corrupt This is another type of memory failure.

  • Page 55: Maintenance

    Pool Pump Savings Calculator. https://apps.nidec-motor.com/poolcalculator/ The calculator uses US Dollars (USD) for savings calculation only. The calculator will show you the number of hours to run your pump each day, along with the appropriate speed for maximum energy savings.

  • Page 56: Default Settings

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Default Settings These are the factory default settings for each mode of operation. The default values listed below are based on AM/PM equivalents, not the 24H clock setting. You can reset the pool pump motor to the default settings by enabling Reset To Factory located in corresponding menu tree.
  • Page 57 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Timer Features Disabled (DOE Scheduling) Since the motor/control ships with the Timer Features Enabled, the following menus and options are not available until Timer scheduling is disabled. Note: Some of the screens appearing in the DOE menu trees are not included in the tables below. For example, a screen may be a selector screen or a calculated value, but not a default setting.

  • Page 58: Index

    Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor Index Note: The menu hierarchies in the index below are listed alphabetically, not sequentially. Average Pool Depth Agency Safety Standards Average Pool Length Average Pool Width Clean and Override Operations Pool Shape Default Settings Manual...

  • Page 59: Warranty Information

    Warranty Information LIMITED WARRANTY Nidec Motor Corporation (NMC) extends the following LIMITED WARRANTY to the purchaser and to its customers (collectively referred to as the “Purchaser”) of the enclosed motor and components: the motor and components are free from defects in materials and workmanship under normal use, service and...
  • Page 60 Neptune ™ 1.5, 1.65, 2.25, 2.7, & 3.45 THP Pool Pump Motor © 2024 Nidec Motor Corporation. All rights For more information reserved. U.S. Motors® and Neptune® are 8050 W. Florissant Avenue | St. Louis, MO 63136 trademarks of Nidec Motor Corporation.

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