NIDECUnimotor hd, Unimotor fm, NT Series and XV Series 0.9 - 1,204 lb-in (0.11 - 136 Nm) 230 V | 460 V Servo Motors

A Servo Motor for Every Application

Performance Advantage

Unimotor fm

Designed for flexible configuration for use in a wide range of 

applications. A high inertia option is available.

• Voltage Rating: 230 V/460 V

• Continuous Torque: 10.6 to 1,204 lb-in (1.2 to 136 Nm)

• Feedback Choices: Resolver, incremental and absolute 

encoder with multiple connector options

• Frame Sizes (with NEMA flange options): 75, 95, 115,

142 ,190 and 250 mm

• Ratings: IP65, UL, CE and RoHS

Unimotor hd 

Compact low-inertia servo motor for high-dynamic applications

• Voltage Rating: 230 V/460 V

• Continuous Torque: 6.4 to 752 lb-in (0.72 to 85.0 Nm)

• Feedback Choices: Resolver, encoder and absolute encoder

• Frame Sizes: 55, 67, 89, 115, 142 and 190 mm

• Ratings: IP65, UL, CE and RoHS

NT Series

Compact NEMA or metric flange motors

• Voltage Rating: 230 V

• Continuous Torque: 7.5 to 56 lb-in (0.85 to 6.3 Nm)

• Feedback Choices: Incremental encoder 

• Flying Lead Option

• Frame Sizes: English (NEMA 23 or 34) or Metric (IEC-72-1)

• Ratings: IP65, UL and RoHS

XV Series

Economical metric motors

• Voltage Rating: 230 V

• Continuous Torque: 0.9 to 101 lb-in (0.11 to 11.5 Nm)

• Frame Sizes: 40, 60, 80 and 130 mm

• Ratings: IP55 and IP65, UL, CE and RoHS

Shaft seals standard on Unimotor hd, Unimotor fm 

and NT series motors

Reliability and Innovation

Control Techniques designs its products using a proven 

development process that prioritizes innovation and reliability. 

This process has resulted in Nidec's market-leading reputation for 

performance and quality.

Control Techniques offers a wide range of reliable servo motors 

designed to meet specific application requirements. When 

matched to a Control Techniques' brand servo drive product 

(Unidrive M, Digitax ST, Epsilon EP or MDS servo drive), the 

resulting drive/motor combination provides an optimized system 

in terms of ratings, performance, cost and ease of use.

Today, businesses of all sizes are searching for partners who 

understand the unique demands of today’s global economy. 

Time and again they turn to Control Techniques. With our 

world-class brands, broad industry experience and extensive 

global presence, Control Techniques is uniquely positioned to 

deliver cost-effective solutions for the ever-changing industrial 

manufacturing market

A Wide Range of Rugged and Reliable Servo Motors

Why Motion Customers Choose Nidec's Motion Control Solutions..

 A full line of servo motors up to 1200 lb-in

• Single-source motion control lowers total system costs

• Complimentary software offers the ultimate programming 

capability and greatly reduces programming time

• Multiple fieldbus options including EtherCAT, EtherNet/IP, 

Modbus TCP/IP and more

• High-speed, peer-to-peer communications

• 8 feedback types supported as standard

• Integrated programs eliminate need for PLC

• Drive and Automation Center support

• Zero-space internal EMI and dynamic braking resistor options

• AC drives with closed-loop vector control and sensorless

rotor control

Selecting the Right Motor for the Right Drive

Control Techniques' drive and motor combinations provide an 

optimized system in terms of ratings, performance, cost and 

ease-of-use. You can manually select the system components 

using the following steps, or download the SERVOSoft® sizing 

software which includes our Control Techniques' servo drive and 

motor data. 

1. Determine the application’s continuous and peak torque 

requirements at various motor shaft speeds, then refer to 

motor data tables and the visual reference overview to help 

determine which motor family will be most appropriate for 

the application.

2. Once the motor family is selected, use this brochure to select 

a specific motor model that delivers the required torque and 

speed. Make note of the continuous and peak current (Amps) 

requirements of the selected motor.

3. Check the specification tables in the Control Techniques' 

individual drive brochures for Digitax ST, Epsilon EP, Unidrive 

M or MDS servo drives to select the drive model that delivers 

adequate continuous and peak torque for the selected motor.

4. Refer to the Servo Motor Cables section of this brochure to 

select the motor power and feedback cables for the selected 

motor and drive. 

5. Confirm that the ratio of rotor inertia to load inertia is <10:1

load inertia/rotor inertia <10

 Note: A gear reducer will reduce the load inertia based on 

the following equation:

Reflected load inertia = load inertia/gear ratio2

Note: When specifying a motor system, be sure to consider 

such options as user-interfaces (HMI), braking resistors and 

other options and accessories that will enhance the system’s 

performance and value.

Electronic Nameplates

Some motors fitted with high-resolution SinCos or absolute 

encoders are pre-loaded with the motor “electronic nameplate” 

data during the manufacturing process. This data can be 

read by most Control Techniques' brand servo drives and 

used to automatically optimize the drive settings. This feature 

simplifies commissioning and maintenance, ensures consistent 

performance and saves time

Example

using the NT motor family and Digitax ST servo drive family

Step 1: The application requires 12 lb-in continuous torque.

Step 2: The Servo Motors brochure lists the NT-212 motor 

with 2.7 A stall current.

Step 3: Select the Digitax ST drive with adequate current rating.

Unimotor fm 230 V / 460 V

Flexible Configuration AC Servo Motors

Unimotor fm is a high performance, brushless AC Servo 

motor range matched for use with Control Techniques' brand 

drives. “FM” stands for “Flexible Motor” and is designed to 

accommodate a wide range of applications. The motors are 

available in six frame sizes with various mounting arrangements 

and motor lengths. Control Techniques' drives and motors are 

designed to function as an optimized system. Unimotor fm is the 

perfect partner for Unidrive M, Digitax ST and Epsilon EP servo 

drives.

Key Features

• Torque range: 12.4 to 1204 lb-in (1.4 to 136.0 Nm)

• Medium inertia design with high inertia option available

• Connector styles include vertical, low profile and

90° rotatable

• Variety of flange possibilities (IEC/NEMA)

• Holding brake option

• IP65 conformance

• Winding to suit 230 V and 460 V

• Speed options include 2000, 3000, 4000 and 6000 rpm

• Multiple feedback options:

• Resolver: Robust for extreme applications and

conditions — lower accuracy, medium resolution

• Incremental encoder: High accuracy, medium resolution

• Absolute: Medium accuracy, medium resolution, single-turn 

and multi-turns

• SinCos/Absolute: High accuracy, high resolution, single-turn 

and multi-turn

• HIPERFACE (SICK) and EnDat (Heidenhain) protocols 

supported

NOW WITH EVEN HIGHER PERFORMANCE!

Electronic Nameplate Capability

When a Unidrive M, Unidrive SP or Digitax ST servo drive is 

connected to a SinCos or absolute encoder, it can recognize and 

communicate with the motor to obtain the “electronic nameplate” 

data. This motor data can then be used to automatically optimize 

the drive settings. This feature simplifies commissioning and 

maintenance, ensures consistent performance and saves time.

Unimotor fm Order Information