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NX Series Servo Motor Drivers

NX Series Tuning Free Servo Motors Drivers

NX Series Tuning Free Servo Motor Drivers

The NX Series servo motor drivers allow for easy operation and control of the servo motors. 4 Control Modes are available: Position, Speed, Torque and Tension Control. The driver provides automatic tuning allowing for optimal performance without manual adjustments.

  • Built-in Protective Functions
  • Pulse Input Type
  • Single-Phase 100-115 VAC, Single-Phase 200-230 VAC, Three-Phase 200-230 VAC
  • Works with NX Series Tuning Free Servo Motors*

Servo Motor Driver Lineup


Power Input

Motor Output Power

Rated Input Current

Single-Phase 100-115 VAC Servo Motor Driver

NXD20-A Servo Motor Driver

Single-Phase 100-115 VAC

50 W (1/15 HP)
100 W (1/8 HP)
200 W (1/4 HP

4.6 A

Single-Phase/Three-Phase 200-230 VAC Servo Motor Driver

NXD20-C Servo Motor Driver

Single-Phase 200-230 VAC /
Three-Phase 200-230 VAC

50 W (1/15 HP)
100 W (1/8 HP)
200 W (1/4 HP

2.8 A (Single-Phase 200-230 VAC)
1.6 A (Three-Phase 200-230 VAC)

Three-Phase 200-230 VAC Servo Motor Driver

NXD75-S Servo Motor Driver

Three-Phase 200-230 VAC

400 W (1/2 HP)
750 W (1 HP)

4.7 A


Servo Motor Drivers

standard type servo motor

Easy Operation

As with a stepping motor, stable operation can be achieved in high inertia drive and belt mechanism drive applications without gain adjustment using the servo motors. Also, adjusting the gain manually enables operation under even more stringent load conditions.

Achieves High Inertia Drive

With automatic tuning, operation up to 50 times the rotor inertia is possible. With manual tuning, operation up to 100 times the rotor inertia is possible.

Achieves Smooth Operation with Belt Mechanisms

Belt mechanisms can be operated with the same performance as a stepping motor without the occurrence of vibration before stopping.

servo motor easy operation

Driver Operation

Easy Handling

Basic settings and adjustments are made with switches and potentiometers on the front panel. This design allows for easy control without a computer and even saves the hassle of complicated UP and DOWN key operations.

Easy Handling

Easy Setting and Easy Monitoring

By using the control module (OPX-2A) [sold separately] or data setting software (MEXE02) [sold separately], it is possible to perform changing of parameters, function setting and monitoring that is better suited to your system.

Easy Monitoring

4 Control Modes

Position Control

The built-in, high-resolution 20-bit absolute encoder enables highly accurate positioning of the servo motor.

High Speed and High Response

High-speed positioning can be performed utilizing the high-speed and high response characteristics.

Maximum Speed 5500 r/min

Factory Setting Time 60 to 70 ms

high speed servo motors

Damping Control

Eliminates load resonance by adjusting the potentiometer. This adjustment can be made easily and without searching for the resonance frequency.

<Application Example: Image inspection equipment>
Camera vibration during stopping can be suppressed by using the damping control.

servo motor damping control

Absolute System

Use as an absolute system by attaching an optional battery (sold separately) is possible. The current position of the encoder can be stored, so resetting after a blackout or similar occurrence is easy.

Speed Control

The reduction of servo motor cogging torque and the use of a high-resolution encoder have substantially reduced variation in rotation in the low-speed range (the flutter characteristic), resulting in smooth operation even at low speeds.

servo motor speed control

Torque Control

Variation of the generated torque relative to the set torque (torque accuracy) has been improved, resulting in highly accurate torque control.

servo motor torque control

Tension Control

Tension control such as winding film can be easily performed without using a tension detector or control equipment using the servo motor.

servo motor tension control


Separate Main Power Supply and Control Power Supply

A control power supply terminal that is separate from the main power supply is provided. Even when the main power supply is cut off in the case of, for example, an emergency stop, operations such as position detection and alarm contents checking can be performed if 24 VDC is provided to the control power supply terminal. (Operation with only the main power supply is also possible.)

Conforms to Semiconductor Equipment and Materials International Standards "SEMI F47"

Conforms to SEMI Standards regarding power supply voltage drop.

Effective for use in semiconductor equipment. (Always evaluate the product with it mounted on actual equipment.)

NX Series Servo Motors

Servo Motors

The NX Series servo motors are capable of highly accurate control with easy operation, similar to stepper motors. These servo motors are specialized for high-response, high-precision positioning. As a motor capable of accurate rotation angle and speed control it can be used for a variety of equipment.

  • Tuning Free
  • Compact and High Power
  • Wide Variable Speed Range
  • Standard or Planetary Geared Type
  • Electromagnetic Brake Types
  • NX Series Driver Required*


SCX11 Universal Controller

universal controller

The SCX11 is a highly-functional and sophisticated controller equipped with program editing and execution functions. Use the SCX11 as a stored program controller to connect to any of Oriental Motor's standard pulse input drivers. The SCX11 is also able to control the motor via serial communications such as USB, RS-232C and CANopen.


Accessory Sets

Accessory Set

When using analog I/O, purchase an accessory set.


Set Includes


20-pin Connector for CN6 x 1 set,
External Potentiometers x 2 sets (Potentiometer x 2, Scale plate x 2, Insulation sheet x 2, Knob x 2, Shielded cable x 2)


20-pin Connector for CN6 x 1 set


Control Options - Control Module

Control Module

The internal driver parameter settings and data settings can be established and changed. They can also be used for speed and I/O monitoring, teaching, and so on.



Control Options - Data Setting Software

Communication Cable for Data Setting Software

This communication cable is required for connecting to the computer on which the data setting software is installed.




This battery is for constructing an absolute system. Position information can be stored during power blackouts or if the driver's power supply is switched OFF.



Regeneration Unit

Rengenration Unit

Sometimes the regenerative power generated by the motor exceeds the driver's regenerative power absorption capacity. In such a case, a regeneration unit is connected to the driver to release the regenerative power.

Conditions under which a regeneration unit may be required; when using for vertical operation, during acceleration and deceleration time when an inertial load is installed.


Applicable Product


NXD20-A, NXD20-C




Driver Cables

Driver Cable

General-purpose multi-conductor cable which is convenient for connection between the driver and host controller.





For CN7 (36 pins)

1 m (3.3 ft.)


2 m (6.6 ft.)


For CN6 (20 pins)

1 m (3.3 ft.)


2 m (6.6 ft.)


System Configuration

System Configuration

Motor and Driver Combinations

CAD / Manual Search

To locate product CAD and Operator Manuals please search using the product Item Number.


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