AR Series Closed Loop Stepper Motors

AR Series Closed Loop Stepper Motors

AR Series Closed Loop Stepper Motors

The AR Series stepper motors offer high efficiency, low vibration, continuous operation with the security of closed loop performance without hunting or gain tuning. Available with a built-in controller or pulse input driver, the system substantially reduces heat generation from the stepper motor through the use of high-efficiency technology. The AR Series also achieves up to 40% less power consumption, improved angle accuracy and is capable of driving large inertia loads. For use with AR Series Drivers.

  • High-Efficiency, Continuous Operation
  • Closed Loop Performance, No Hunting or Gain Tuning
  • AC or DC Input Types
  • Wide Range of Gear Types for Inertia Matching & Higher Torque
  • Electromagnetic Brake Types
  • AR Series Driver Required*

Product Lineup

Choose AC or DC input depending on Driver Power Input.

Driver Power Input

Frame Size

Motor Types

Available Options

Max. Holding Torque

AC Input

42mm closed loop stepper motors

AC Input
1.65 in. (42 mm)
NEMA 17

Standard Type

Electromagnetic Brake

42 oz-in

0.3 N·m

Geared Type

48 ~ 704 oz-in

0.35 ~ 5 N·m

60mm closed loop stepper motors

AC Input
2.36 in. (60 mm)
NEMA 24

Standard Type

Electromagnetic Brake

142 ~ 280 oz-in

1 ~ 2 N·m

Geared Type

176 ~ 1120 oz-in

1.25 ~ 8 N·m

85mm closed loop stepper motors

AC Input
3.35 in. (85 mm)
NEMA 34 /
3.54 in.* (90 mm*)

Standard Type

Electromagnetic Brake

280 ~ 560 oz-in

2 ~ 4 N·m

Geared Type

624 ~ 5120 oz-in

4.5 ~ 37 N·m

DC Input

28 mm closed loop stepper motors

DC Input
1.10 in. (28 mm)
NEMA 11

Standard Type

Electromagnetic Brake

7.8 ~ 17 oz-in

0.055 ~ 0.12 N·m

Geared Type

28 ~ 340 oz-in 0.2 ~ 2.4 N·m

42mm closed loop stepper motors

DC Input
1.65 in. (42 mm)
NEMA 17

Standard Type

Electromagnetic Brake

42 oz-in

0.3 N·m

Geared Type

48 ~ 704 oz-in

0.35 ~ 5 N·m

60mm closed loop stepper motors

DC Input
2.36 in. (60 mm)
NEMA 24

Standard Type

Electromagnetic Brake

142 ~ 280 oz-in

1 ~ 2 N·m

Geared Type

176 ~ 1120 oz-in

1.25 ~ 8 N·m

85mm closed loop stepper motors

DC Input
3.35 in. (85 mm)
NEMA 34 /
3.54 in.* (90 mm*)

Standard Type

Electromagnetic Brake

280 oz-in

2 N·m

Geared Type

624 ~ 5120 oz-in

4.5 ~ 37 N·m

* Geared Stepper Motor frame size.


 

Closed Loop Performance

High Reliability with Closed Loop Control

The AR Series uses Oriental Motor's closed loop control to maintain positioning operation even during abrupt load fluctuations and accelerations. The rotor position detection sensor monitors the rotation. When an overload condition is detected, the AR Series will instantaneously regain control using the closed loop mode. When an overload condition continues, the AR Series will output an alarm signal, thereby providing reliability equal to that of a servo motor.

 


Continuous Operation

The AR Series can be operated at high duty cycles allowing the stepper motor to run continuously.

continuous operation

Note: If the stepper motor is operated continuously, a heat sink of a capacity at least equivalent to an aluminum plate with a size of 250 x 250mm*, 6mm thick is required.

*For AC input, 100 x 100mm for DC input type.

Energy-Saving

Power consumption: up to 40% less than our conventional models.

stepper motor power consumption

CO2 emission: up to 40% less than our conventional model (assuming operation at a duty of 40%).


Lower Heat Generation

The AR Series utilizes high-efficiency technology to achieve a significant reduction in the amount of heat generated from the stepper motor.

The stepper motor generates significantly less heat than the conventional model as seen in the thermography results below.

stepper motor lower heat generation

The graph below shows the difference in temperature of the stepper motor case over the same period of time under the same operating conditions.

stepper motor temperature

 


Low Vibration

In addition to the microstep drive system, the AR Series also uses the smooth drive function to allow for smoother motion. The smooth drive function automatically implements microstep drive based on the same travel amount and speed used in the full-step mode, without changing the pulse input settings.

low vibration stepper motors

Improved Angle Accuracy

The AR Series uses improved current control technology to improve the stop position accuracy of the stepper motor. The result is greater position accuracy. 
AR66AC-3: ±3 arc minutes
Conventional Model: ±5 arc minutes

stepper motor angle accuracy


Performance of a Stepper Motor

The AR Series maintains all of the benefits of a stepper motor.

High Response

The stepper motor operates synchronously with pulse commands to achieve high response. There's no delay in operation following a pulse command.

stepper motor high response

Capable of Driving Large Inertia Loads

Compared to a servo motor of the same frame size, a larger inertial load can be driven regardless of speed conditions.

inertia loads


No Hunting / No Tuning

Because it uses a stepper motor, the AR Series does not hunt when stopped. Accordingly, the AR Series is ideal for applications where the equipment uses a belt-drive mechanism or otherwise has low rigidity and you don't want it to vibrate when stopping.

With the AR Series, you can perform positioning quickly after a load change, etc., without adjusting any gains.

no hunting / no tuning


Motor Protection Degree: IP65*

The stepper motor complies with the requirements of protection degree IP65* (except for the motor mounting surface and connectors). This means that the enclosure prevents intrusion of dust that can otherwise inhibit normal operation.

*Excluding 1.10 in. (20 mm) and double shaft models.

Sensorless Homing

The AR series features extended functions not normally offered on conventional stepper motors. Using the TLC output on the AR, we can sense a preset torque setting range or perform a torque control function.



Taper Hobbed Gear Stepper Motors (TS)

  • 1.10 in. (28 mm)
  • 1.65 in. (42 mm)
  • 2.36 in. (60 mm)
  • 3.54 in. (90 mm)

Taper Hobbed Gear Stepper Motors

High Speed, Low Backlash Gears

This geared type is made with a simple spur gear design. The torque and speed have been improved.

Because of its high accuracy, this type has the same level of accuracy when compared to our tapered (TH) type without the added cost of tapering.

Taper Hobbed Gear Structure

Planetary Gear Stepper Motors (PS)

  • 1.10 in. (28 mm)
  • 1.65 in. (42 mm)
  • 2.36 in. (60 mm)
  • 3.54 in. (90 mm)

Planetary Gear Stepper Motors

High Permissible Torque, Low Backlash Gears

The PS gear mechanism is comprised primarily of a sun gear, planetary gears and an internal tooth gear. The planetary gears design allow for higher output torque.

There are gears inside used to distribute torque, which allows for higher torque than a spur gear design. The PS gear uses a higher accuracy gear design which provides for a lower backlash when compared to a spur gear design.

Planetary Gear Structure

Planetary Gear Stepper Motors (PN)

  • 1.10 in. (28 mm)
  • 1.65 in. (42 mm)
  • 2.36 in. (60 mm)
  • 3.54 in. (90 mm)

Planetary Gear Stepper Motors

High Permissible Torque, Non-backlash Gears

The PN gear employs a planetary gear speed-reduction mechanism. The PN gear achieves the specified backlash of three arc minutes through the improved accuracy of its components and the backlash-elimination mechanism. That mechanism is comprised of two sets of internal and planetary gears on the upper and lower levels with the internal gears and planetary gears reduce clockwise backlash; the lower-level internal gears and planetary gears reduce counterclockwise backlash.

The PN gear mechanism is comprised primarily of a sun gear, planetary gears and an internal tooth gear. The sun gear is installed on the central axis surrounded by planetary gears enclosed in an internal tooth gear centered on the central axis.

Planetary Gear Structure

Harmonic Gear Stepper Motors (HG)

  • 1.10 in. (28 mm)
  • 1.65 in. (42 mm)
  • 2.36 in. (60 mm)
  • 3.54 in. (90 mm)

Harmonic Gear Stepper Motors

High Accuracy, Non-Backlash Performance Gears

The mechanical life, permissible torque and maximum torque are improved (compared with conventional models).

Improved Rate Life (Twice the length of conventional models)

The rate life has been increased from 5,000 hours (conventional model) to 10,000 hours.
[Except for 1.65 in. (42 mm) frame size]

Harmonic Gear Structure

The harmonic gear utilizes the metal’s electrodynamics property. It is comprised of three basic components, a wave generator, flex spline and circular spline.

Stepper Motor Gear Structure

Harmonic Gear Rotation

Rotating the wave generator (input) clockwise while keeping the circular spline fixed in position will subject the flax spline to elastic deformation, causing a gradual shift in the point of engagement between the circular spline and flex spline.

Harmonic Gear Rotation

When the wave generator completes one revolution, the flex spline has rotated two fewer teeth than the circular spline has, resulting in the movement of the flex spline for the difference in the tooth count (two teeth) in the opposite direction of the wave generator's rotation (i.e. counterclockwise). This movement translates into output, thereby reducing the speed.


Surface Installation of Load

The harmonic geared type permits installation of load directly on the rotating surface integrated with the shaft. [Expect for geared stepper motors with a frame size of 3.54 in. (90 mm)].

Harmonic Gear Installation

 

Harmonic Gear Index Table

 


Electromagnetic Brake Option

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

Stepper Motor with Brake Option

These products have built-in power-off activated electromagnetic brakes. When power is accidentally cut off due to a blackout or other unexpected events, the electromagnetic brake holds the load in position to prevent it from dropping or moving. Also, when the motor is at standstill, it is held by the electromagnetic brake. It is possible to suppress the heat generated from the motor by turning off the motor current.


AR Series AC Input Drivers

AC Input Drivers

The ARD (AC Input) Drivers offers superior high speed performance, low vibration and closed loop control. Available in a stored data (network) driver or pulse input driver. Advanced operation and function control is included through our MEXE02 software (free download). The ARD (AC Input) Drivers can perform quick positioning operations over a short distance without the need for tuning, while providing smooth performance.

  • Built-in Protective Functions
  • Pulse Input or Built-in Controller (Network) Types
  • Single-Phase 100-115, 200-240 VAC or Three-Phase 200-230 VAC
  • For use with AR Series Motors (AC Input)

 

AR Series DC Input Drivers

AC Input Drivers

The ARD-K (DC Input) Drivers offer 24/48 VDC input voltage, low vibration and closed loop control. Available in a stored data (network) driver or pulse input driver. Advanced operation and function control is included through our MEXE02 software (free download). The ARD-K (DC Input) Driver can perform quick positioning operations over a short distance without the need for tuning, while providing smooth performance.

  • Built-in Protective Functions
  • Pulse Input or Built-in Controller (Network) Types
  • 24/48 VDC
  • For use with AR Series Motors (DC Input)

 

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.

 

Network Gateways

Network Gateways

The communication protocol of the master controller, Factory Automation (FA) network, is converted to Oriental Motor's own RS-485 communication protocol. Connection to Oriental Motor's network compatible products is completed with one RS-485 communication cable.

  • Compatible Networks:
    CC-Link, MECHATROLINK-II, MECHATROLINK-III, EtherCat

EtherCat CC-Link MECHATROLINK


Cables

Cables

These cables are used to connect or extend the distance between the motor and driver.

Required (sold separately).

Use a flexible motor cable if the motor is installed on a moving part or its cable will be flexed.

 

Flexible Couplings

Flexible Couplings

This three-piece coupling adopts an aluminum alloy hub and a resin spider. The simple construction ensures that the high torque generated by a gear motor can be transmitted reliably. The proper elasticity of the spider suppresses motor vibration.

 

Mounting Brackets

Mounting brackets are convenient for installation and securing a stepper motor or geared stepper motor.


Clean Dampers

Mechanical dampers suppress stepper motor vibration and improve high-speed performance. An inertia body and silicon gel are hermetically sealed in a plastic case.

(For use with Double Shaft motors)


System Configuration

AC Input

System Configuration

System Configuration

 

DC Input

System Configuration

System Configuation

 


Motor & Driver Combinations

AC Input

 

Built-in Controller (Network)

Pulse Input

Gear

Rear

Size

Motor P/N

Driver P/N

Rear

Size

Motor P/N

Driver P/N

Round

Single

46

ARM46AC

ARD-♢D

Single

46

ARM46AC

ARD-♢

66

ARM66AC

66

ARM66AC

69

ARM69AC

69

ARM69AC

98

ARM98AC

98

ARM98AC

911

ARM911AC

911

ARM911AC

Double

46

ARM46BC

Double

46

ARM46BC

66

ARM66BC

66

ARM66BC

69

ARM69BC

69

ARM69BC

98

ARM98BC

98

ARM98BC

911

ARM911BC

911

ARM911BC

Electromagnetic
Brake

46

ARM46MC

Electromagnetic
Brake

46

ARM46MC

66

ARM66MC

66

ARM66MC

69

ARM69MC

69

ARM69MC

98

ARM98MC

98

ARM98MC

 

Single

46

ARM46AC

ARD-S*

66

ARM66AC

69

ARM69AC

98

ARM98AC

911

ARM911AC

Double

46

ARM46BC

66

ARM66BC

69

ARM69BC

98

ARM98BC

911

ARM911BC

Electromagnetic
Brake

46

ARM46MC

66

ARM66MC

69

ARM69MC

98

ARM98MC

TH Geared
Type

Single

46

ARM46AC-T☐

ARD-♢D

Single

46

ARM46AC-T☐

ARD-♢

66

ARM66AC-T☐

66

ARM66AC-T☐

98

ARM98AC-T☐

98

ARM98AC-T☐

Electromagnetic
Brake

46

ARM46MC-T☐

Electromagnetic
Brake

46

ARM46MC-T☐

66

ARM66MC-T☐

66

ARM66MC-T☐

98

ARM98MC-T☐

98

ARM98MC-T☐

 

Single

46

ARM46AC-T☐

ARD-S*

66

ARM66AC-T☐

98

ARM98AC-T☐

Electromagnetic
Brake

46

ARM46MC-T☐

66

ARM66MC-T☐

98

ARM98MC-T☐

PS Geared
Type

Single

46

ARM46AC-PS☐

ARD-♢D

Single

46

ARM46AC-PS☐

ARD-♢

66

ARM66AC-PS☐

66

ARM66AC-PS☐

98

ARM98AC-PS☐

98

ARM98AC-PS☐

Electromagnetic
Brake

46

ARM46MC-PS☐

Electromagnetic
Brake

46

ARM46MC-PS☐

66

ARM66MC-PS☐

66

ARM66MC-PS☐

98

ARM98MC-PS☐

98

ARM98MC-PS☐

 

Single

46

ARM46AC-PS☐

ARD-S*

66

ARM66AC-PS☐

98

ARM98AC-PS☐

Electromagnetic
Brake

46

ARM46MC-PS☐

66

ARM66MC-PS☐

98

ARM98MC-PS☐

PN Geared
Type

Single

46

ARM46AC-N☐

ARD-♢D

Single

46

ARM46AC-N☐

ARD-♢

66

ARM66AC-N☐

66

ARM66AC-N☐

98

ARM98AC-N☐

98

ARM98AC-N☐

Electromagnetic
Brake

46

ARM46MC-N☐

Electromagnetic
Brake

46

ARM46MC-N☐

66

ARM66MC-N☐

66

ARM66MC-N☐

98

ARM98MC-N☐

98

ARM98MC-N☐

 

Single

46

ARM46AC-N☐

ARD-S*

66

ARM66AC-N☐

98

ARM98AC-N☐

Electromagnetic
Brake

46

ARM46MC-N☐

66

ARM66MC-N☐

98

ARM98MC-N☐

Harmonic
Geared Type

Single

46

ARM46AC-H☐

ARD-♢D

Single

46

ARM46AC-H☐

ARD-♢

66

ARM66AC-H☐

66

ARM66AC-H☐

98

ARM98AC-H☐

98

ARM98AC-H☐

Electromagnetic
Brake

46

ARM46MC-H☐

Electromagnetic
Brake

46

ARM46MC-H☐

66

ARM66MC-H☐

66

ARM66MC-H☐

98

ARM98MC-H☐

98

ARM98MC-H☐

 

Single

46

ARM46AC-H☐

ARD-S*

66

ARM66AC-H☐

98

ARM98AC-H☐

Electromagnetic
Brake

46

ARM46MC-H☐

66

ARM66MC-H☐

98

ARM98MC-H☐

♢ = A (Single 100-120 VAC) / C (Single 200-240VAC)

*S = Three Phase 200-240V

☐ = Gear Ratio

DC Input

 

Built-in Controller (Network)

Pulse Input

Gear

Rear

Size

Motor P/N

Driver P/N

Rear

Size

Motor P/N

Driver P/N

Round

Single

24

ARM24SAK

ARD-KD

Single

24

ARM24SAK

ARD-K

26

ARM26SAK

26

ARM26SAK

46

ARM46AK

46

ARM46AK

66

ARM66AK

66

ARM66AK

69

ARM69AK

69

ARM69AK

98

ARM98AK

98

ARM98AK

Double

24

ARM24SBK

Double

24

ARM24SBK

26

ARM26SBK

26

ARM26SBK

46

ARM46BK

46

ARM46BK

66

ARM66BK

66

ARM66BK

69

ARM69BK

69

ARM69BK

98

ARM98BK

98

ARM98BK

Electromagnetic
Brake

46

ARM46MK

Electromagnetic
Brake

46

ARM46MK

66

ARM66MK

66

ARM66MK

69

ARM69MK

69

ARM69MK

98

ARM98MK

98

ARM98MK

TH Geared
Type

Single

24

ARM24SAK-T☐

ARD-KD

Single

24

ARM24SAK-T☐

ARD-K

46

ARM46AK-T☐

46

ARM46AK-T☐

66

ARM66AK-T☐

66

ARM66AK-T☐

98

ARM98AK-T☐

98

ARM98AK-T☐

Electromagnetic
Brake

46

ARM46MK-T☐

Electromagnetic
Brake

46

ARM46MK-T☐

66

ARM66MK-T☐

66

ARM66MK-T☐

98

ARM98MK-T☐

98

ARM98MK-T☐

PS Geared
Type

Single

24

ARM24SAK-PS☐

ARD-KD

Single

24

ARM24SAK-PS☐

ARD-K

46

ARM46AK-PS☐

46

ARM46AK-PS☐

66

ARM66AK-PS☐

66

ARM66AK-PS☐

98

ARM98AK-PS☐

98

ARM98AK-PS☐

Electromagnetic
Brake

46

ARM46MK-PS☐

Electromagnetic
Brake

46

ARM46MK-PS☐

66

ARM66MK-PS☐

66

ARM66MK-PS☐

98

ARM98MK-PS☐

98

ARM98MK-PS☐

PN Geared
Type

Single

24

ARM24SAK-N☐

ARD-KD

Single

24

ARM24SAK-N☐

ARD-K

46

ARM46AK-N☐

46

ARM46AK-N☐

66

ARM66AK-N☐

66

ARM66AK-N☐

98

ARM98AK-N☐

98

ARM98AK-N☐

Electromagnetic
Brake

46

ARM46MK-N☐

Electromagnetic
Brake

46

ARM46MK-N☐

66

ARM66MK-N☐

66

ARM66MK-N☐

98

ARM98MK-N☐

98

ARM98MK-N☐

Harmonic
Geared Type

Single

24

ARM24SAK-H☐

ARD-KD

Single

24

ARM24SAK-H☐

ARD-K

46

ARM46AK-H☐

46

ARM46AK-H☐

66

ARM66AK-H☐

66

ARM66AK-H☐

98

ARM98AK-H☐

98

ARM98AK-H☐

Electromagnetic
Brake

46

ARM46MK-H☐

Electromagnetic
Brake

46

ARM46MK-H☐

66

ARM66MK-H☐

66

ARM66MK-H☐

98

ARM98MK-H☐

98

ARM98MK-H☐

☐ = Gear Ratio

CAD / Manual Search

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

Downloads


Videos

AR Series Demo #1

AR Series Demo #2

Closed Loop Stepper Drivers*
Linear Actuators
Rotary Actuators

 

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