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Stepper Motor Drivers


AC Input Stepper Motor Drivers

AC Input Stepper Motor Drivers

AC Input stepper motor drivers offer superior torque characteristics over a wide speed range, from low to high speeds, providing a large speed ratio. Supports Closed Loop control without gain tuning or hunting problems when used with the AlphaStep AZ Series (absolute mechanical encoder) motor or the AlphaStep AR Series (built-in resolver) motor for superior control. The RKII Series (open loop) is ideal for demanding applications where feedback is not required.

All AC Input stepper motor drivers feature Oriental Motor's advance microstepping (Smooth Drive) control. These drivers are available in pulse input or stored data (Network) types through our FLEX product group and offer electromagnetic brake control for vertical operations. 

Utilize the AlphaStep Closed Loop drivers on all our Actuator based products as a common platform to simplify wiring, improve machine performance and Networking.

  • Pulse Input, Pulse Input with RS-485 Communications or Stored Data (Network) 
  • Single Phase or Three Phase Input
  • Closed Loop or Open Loop

 


DC Input Stepper Motor Drivers

DC Input Stepper Motor Drivers

Available in a wide range of DC inputs, our DC stepper motor drivers are available with the same features found in our popular AC Input drivers.

In addition, we offer DC Input drivers specifically designed for OEM applications. The CVD board level is a superior microstepping driver providing an industry leading speed torque characteristic, high accuracy even when microstepping and ultra low vibration characteristics with its advanced microstepping (smooth drive) feature. Available in 2-phase or 5-phase.

Utilize the Closed Loop drivers on all our Actuator based products as a common platform to simplify wiring, improve machine performance and Networking.

  • OEM (Board / card type) or Box type
  • Pulse Input, Pulse Input with RS-485 Communications, Multi-Axis or Build-in Controller type (Network) 
  • AlphaStep Closed Loop, 2-Phase and 5-Phase Stepper Motors
  • 24 VDC, 48 VDC or 75 VDC Input

EtherCAT

 

 


Types of Stepper Motor Drivers

Drivers that operate in the pulse input mode and built-in controller mode are available. You can select a desired combination according to the required operation system.

Pulse Input Drivers

The stepper motor can be controlled using a pulse generator provided by the user. Operation data is input to the pulse generator beforehand. The user then selects the operation data on the host programmable controller, then inputs the operation command.

Pulse Input Type Drivers

Built-in Controller (Stored Data or Stored Program) Type Drivers

The built-in pulse generation function allows the motor to be driven via a directly connected personal computer or programmable controller. Since no separate pulse generator is required, drivers of this type save space and simplify wiring.

Built-in Controller Type Driver

Difference Between AC Input and DC Input Characteristics

A stepper motor is driven by a DC voltage applied through a driver. In Oriental Motor's 24 VDC input motor and driver systems, 24 VDC is applied to the motor. In the 100-115 VAC motor and driver systems, the input is rectified to DC and then approximately 140 VDC is applied to the motor (certain products are exceptions to this.)

This difference in voltage applied to the motors appears as a difference in torque characteristics at high speeds. This is due to the fact that the higher the applied voltage is, the faster the current rise through the motor windings will be, facilitating the application of rated current at higher speeds. Thus, the AC input motor and driver system has superior torque characteristics over a wide speed range, from low to high speeds, offering a large speed ratio.

It is recommended that AC input motor and driver systems, which are compatible over a wider range of operating conditions than DC input systems, be considered for your application.

AC Input vs. DC Input Drivers


Stepper Motor Product Comparison

Product Series

AZ Series Closed Loop, Absolute Stepper Motors

AR Series Closed Loop Stepper Motors

PKP Series 2-Phase Stepper Motors

RKII Series 5-Phase Stepper Motors

PKP Series 5-Phase Stepper Motors

AlphaStep Closed Loop Absolute Stepper Motors

 

AlphaStep Closed Loop Stepper Motors

 

2-Phase Bipolar Stepper Motors

 

5-Phase Stepper Motors (AC Input)

 

5-Phase Stepper Motors

 

Features

Closed Loop,
Mechanical Absolute
Encoder

Closed Loop,
High-Efficiency

High Torque,
Wide Current Range

High-Efficiency
5-Phase

High Torque,
Low Vibration, Low Noise

Basic Step Angle

0.36°

0.36°

1.8°, 0.9°

0.72°

0.72°, 0.36°

Driver Power Input

AC or DC

AC or DC

DC

AC

DC

Frame Sizes

0.79 in. (20 mm)
1.10 in. (28 mm)
1.65 in. (42 mm)
2.36 in. (60 mm)
3.35/3.54 in. (85/90 mm)

1.10 in. (28 mm)
1.65 in. (42 mm)
2.36 in. (60 mm)
3.35/3.54 in. (85/90 mm)

0.79 in. (20 mm)
1.10 in. (28 mm)
1.38 in.(35 mm)
1.65 in. (42 mm)
2.22/2.36 in. (56.4/60 mm)
3.35/3.54 in. (85/90 mm)

1.65 in. (42 mm)
2.36 in. (60 mm)
3.35/3.54 in. (85/90 mm)

0.79 in. (20 mm)
1.10 in. (28 mm)
1.65 in. (42 mm)
2.36 in. (60 mm)

Available Options

Geared Type
Electromagnetic Brake

Geared Type
Electromagnetic Brake

Geared Type
Encoder
Electromagnetic Brake

Geared Type
Encoder
Electromagnetic Brake

Geared Type
Encoder
Electromagnetic Brake

Max. Holding Torque

2.8 oz-in up to 752 lb-in

42 oz-in up to 320 lb-in

2.8 oz-in up to 84 lb-in

19.8 oz-in up to 460 lb-in

3.2 oz-in up to 70 lb-in

0.02 N·m up to 85 N·m

0.3 N·m up to 37 N·m

0.02 N·m up to 9.5 N·m

0.14 N·m up to 52 N·m

0.0231 N·m up to 8 N·m

Learn More

AZ Series Closed Loop, Absolute Stepper Motors

AR Series Closed Loop Stepper Motors

PKP Series 2-Phase Stepper Motors

RKII Series 5-Phase Stepper Motors

PKP Series 5-Phase Stepper Motors




 

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Order the AZ Series Brochure

AZ Series Brochure

Order the AZ Series Multi-Axis Brochure

AZ Series Multi-Axis Brochure

Parallel Delta Robot Using AZ Series Stepper Motors with Hybrid Control


A compact and lightweight parallel Delta robot that uses AlphaStep AZ Series line of product: 3 AZ Series with harmonic gear stepper motors and 1 EtherCAT compatible multi-axis driver.

AZ Series Stepper Motor Products with Mechanical Absolute Encoder

The AZ Series stepper motor offers high efficiency, low vibration and incorporates our newly developed Mechanical Absolute Encoder for absolute-type positioning without battery back-up or external sensors to buy.

Features of the CVD 2-Phase Bipolar Stepper Motor Drivers


The CVD driver offers superior performance and value and is ideal for OEM or single axis machines. The CVD is available as a driver only or part of a complete package. The CVD stepper motor drivers offer:

  • Lowest Vibration and Noise with advanced Microstepping control
  • Highest torque with Bipolar configuration (4 lead wire)
  • Small, thin microstepping drive with space saving FETs
  • Selectable step angle and microstepping filter control
  • 2 mounting types and connector configurations
  • Alarms
  • 24 VDC Input / 0.5A to 4.5A