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    6 hp (4.5 kW) AC Servo Motor with Drive, 21.5 Nm, 2000 rpm

    5 out of 5 based on 2 reviews | Write a review
    $2,426.54
    4.5 kW AC servo motor with drive delivers 21.5 Nm rated torque, 2000 rpm. Equipped with intelligent DSP control for stable high-speed operation without step loss, low noise, and fast response. Supports pulse, AB pulse, and analog voltage control. Ideal for CNC machinery manufacturers, automation integrators, and packaging equipment users. Upgrade your automation today with this servo motor kit.
    *
    SKU: ATO-SERVO-180S4500W
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    This AC servo motor delivers 21.5 Nm rated torque and 53 Nm peak torque at 2000 rpm. Drive features 200 kHz pulse support, LED monitoring, and alarm output. DSP control ensures no step loss, low noise, with optional 220V/380V voltage configurations. It is an ideal choice for CNC, automation, and packaging machinery engineers. Get a quote for this AC servo motor with drive today.

    Specification

    Serv Motor
    Model ATO-LCMT-45M-21520
    Electrical Time Constant 6Ms 5.6Ms
    Resistance 0.24Ω 0.71Ω
    Inductance 1.45mH 4mH
    Rated Voltage 220V 380V
    Rated Current 16A 9.5A
    Torque Constant 1.34N·m/A 2.26N·m/A
    Back EMF 84V/1000 r/min 140V/1000 r/min
    Rated Power 4.5kW
    Rotor Inertia 4.7 × 10⁻³kg·m²
    Rated Speed 2000rpm
    Peak Torque 53N·m
    Rated Torque 21.5N·m
    Product Weight 22.2kg
    Motor Body Length 243mm
    Length with Brake 315mm
    Encoder Type 2500/17-wire Absolute Encoder
    Insulation Class Class B (130°C)
    Protection Grade IP66
    Certification CE
    Servo Drive
    Model ATO-LCDA630 (Click to see the drive manual)
    Pulse Width > 2.5 μs
    Analog Voltage 3-phase 380 V
    Alarm Output Supported
    Signal Voltage Default +5 V; series limiting resistor required for 12 V / 24 V
    Response Frequency Max. 200 kHz (pulse train)
    Pulse Mode Direction + Pulse / CW + CCW
    Supported Motor 4.5 ~ 7.5 kW AC Servo Motor
    Weight 5.15 kg
    Dimensions 304 × 227.5 × 120 mm


    Features

    1. High Torque: This 4.5 kW AC servo motor delivers 21.5 Nm rated torque and 53 Nm peak torque, providing powerful and stable output for CNC machines and automated equipment.
    2. Intelligent AC Servo Drive: The servo drive features a six-digit LED display for convenient parameter adjustment and real-time operating status monitoring, while built-in alarm output improves operational safety and equipment reliability.
    3. Closed-Loop Without Step Loss: Equipped with intelligent DSP digital technology and advanced closed-loop servo control mode, this servo motor ensures precise positioning, stable speed regulation, and smooth high-speed operation without losing steps.
    4. Fast Response: The AC servo drive supports pulse response frequency up to 200KHZ, enabling faster signal processing, rapid acceleration, and high-precision motion control for industrial automation systems.
    5. Multiple Control Modes: This industrial ac servo motor kit supports direction + pulse control, CW + CCW control, AB pulse control, and analog voltage control, making integration easier for different automation equipment and control systems.
    6. Low Noise Industrial Servo Motor: Using advanced noise reduction technology, the servo motor operates with lower vibration and quieter performance, helping maintain a stable and low-noise industrial working environment.

    Dimension (unit: mm)

    Servo Motor

    4.5 kw ac servo motor dimension

    Installation Notes: When installing or removing components on the motor shaft, do not strike the shaft with force, as this may damage the encoder at the opposite end. Minimize vibration to the shaft assembly to prevent bearing failure.

    Winding and Encoder Connection

    Motor Winding Connector Encoder Connector
    Winding Lead Connector Pin Number Signal Lead Connector Pin Number Signal Lead Connector Pin Number
    U 2 5V 2 Z- 9
    OV 3 U+ 10
    V 3 A+ 4 V+ 11
    B+ 5 W+ 12
    W 4 Z+ 6 U- 13
    A- 7 V- 14
    PE 1 B- 8 W- 15
    PE 1  

    Servo Drive

    4 5 kw ac servo motor drive dimension

    Wiring

    4.5 kw ac servo motor wiring

    Installation Precautions:
    1. Verify the power supply and wiring for terminals R, S, T and L, N are correct.
    2. Confirm the phase sequence wiring of the servo motor output terminals U, V, W is correct.

    Servo Drive Details

    4.5 kw ac servo motor drive details

    Tips: Servo motor does not run when the pulse is output, how to solve?

    • Monitor the current pulse output value of controller and check if pulse output indicator lamp flashes to confirm that the controller has performed command pulse and has output pulse normally.
    • Check if the control cable, power cable, encoder cable between controller and driver are matched incorrectly damaged or contacted poorly.
    • Check if the brake of servo motor equipped with brake has been turned on.
    • Monitor the panel of servo driver to confirm if the pulse command has been input.
    • Run command is normal.
    • For control mode, always choose position control mode.
    • Check if the type of input pulse set by servo driver matches with that of command pulse.
    • Ensure that positive side drive prohibition, negative side drive prohibition signals and deviation counter reset signal are not input and the servo motor runs normally if load is removed, then check the mechanical system.

    This video briefly shows the application of the ATO servo system in a linear slide. 

    ATO servo motor has 40mm to 180mm different square flange size, power rating from 50W to 7.5kW and speed range from 1000 rpm to 3000 rpm. so you can select the best one for your applications. In this video, ATO will show you servo motor linear actuator system for robotics.

    In this video we've guided you through how to do VFD control wiring with a self-lock push button switch to run the motor in forward direction. We've covered everything from wiring to programming and even a test run. So just watch it through and hope you'll find it informative and helpful.

    How to unlock the servo drive timing lock?

    In this video, the process of unlocking the servo drive timing lock is demonstrated.

    How to Connect the Servo Motor Controller and Set the JOG Mode?

    The video shows the basic connection of the ATO servo motor kit and how to initialize the servo drive and how to set the JOG mode.

    How to Use the Position Control Method of the Servo Motor(through PLC Pulse Control)?

    The video introduces the connection and control (position control method) between PLC and ATO servo motor system.

    Existing reviews of 6 hp (4.5 kW) AC Servo Motor with Drive, 21.5 Nm, 2000 rpm
    Servo Drive
    I have a 4.3kW 3000RPM AC servo motor and would like to know if you could help me sell a drive that is servo-capable and can activate it.
    From: Leahn | Date: 31/08/2025
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Based on the motor information you provided (4.3kW 3000RPM AC servo motor), we do not have any suitable products to recommend. Our closest AC servo motor is 6 hp (4.5 kW), 20 Nm, 2000 rpm. Is this acceptable to you?
    Good 6hp servo motor
    The 6hp servo motor was received, and the noise was very small and running. The store’s pre-sales and after-sales services are in place, thank you.
    From: Jensen | Date: 10/11/2021
    Was this review helpful? Yes No (0/0)
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