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Modbus / RS-485 AlphaStep Stepper Motor and DC Input Driver

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Modbus / RS-485 Stepper Motor and Driver

FLEXModbus / RS-485 Closed Loop Stepper Motor and Driver Packages - High-Efficiency AR Series

The AR series modbus / RS-485 system substantially reduces heat generation from the stepper motor through the use of high-efficiency technology. In addition to implementing the closed loop control based on Oriental Motor's original AlphaStep technology, the AR Series also achieves up to 40% less power consumption, low vibration, improved angle accuracy and is capable of driving large inertia loads. There is no hunting or gain tuning.

FLEX is the generic name for products that are used for Factory Automation (FA) network control via I/O control, Modbus (RTU) control, or a network converter. FLEX products enable easy connection via RS-485 communication, easy control and reduce the complexity of system configuration.

The AR Series features frame sizes from 1.10 in. (28 mm) up to 3.54 in. (90 mm) available with a wide range of gear options and electromagnetic brake. The driver uses either 24 or 48 VDC. [Only 24 VDC is available for 1.10 in. (28 mm) motors.] All packages include a 3 m (9.8 ft.) motor cable.

Safety Marks Advanced Search

Closed Loop Performance

Sensor

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. Learn more about the AlphaStep technology.

Continuous Operation

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

Continuous Duty

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.

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. Learn More.

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.

Heat Generation Comparison

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

Motor Case Temperature

Energy-Saving

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

Power Consumption

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

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.

Lower Vibration

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

Angle Accuracy

Compact DC Input Driver with Plastic Case

Compact DC power input driver is covered by a plastic case. The compact size is great for space-saving.

Choose the appropriate power supply 24 VDC or 48 VDC for your application. Motor torque at speed will be increased when 48 VDC is input rather than 24 VDC. [Only 24 VDC input is available for motor frame size 1.10 in. (28 mm) motors.]

Power Supply Compact Driver

DIN Rail Mounting

You can attach the DC input driver to a 1.38 in. (35 mm) width DIN rail through one-step operation, no screw is needed. (DIN rail mounting is the only way to install the driver)

DIN rail

Performance of a Stepper Motor

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

High Response

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

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.

Large 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

Built-in ControllerBuilt-in Controller (Stored Data Type) Package

A built-in pulse generator allows the motor to be driven by connection to a PLC or other devices with connection through a Factory Automation (FA) network via I/O control. Modbus (RTU) control, or a network converter.

The burden on the programmable PLC is reduced because the information necessary for motor operations is built into the driver. This simplifies the system configuration for multi-axis control. Set with control module (sold separately), data setting software or RS-485 communication.

 

FLEX

Equipped with an Interface that Connects to Various Master Control Systems

FLEX is the generic name for products that are used for Factory Automation (FA) network control via I/O control, Modbus (RTU) control, or a network converter.

FLEX products enable easy connection, easy control, and reduce the complexity of system configuration.

Learn More

Operation Type

With built-in controller packages, the motor's operating speed and traveling amount are set with operating data and operations performed based on the selected operating data. The operation type is 4-pattern.

Item Content

Common

Control Method

I/O Control
RS-485 communication Network Converter Connection
Modbus RTU Protocol Connection

Position Command Input

Set with operating data number
Command range per point: -8388608~8388607 [steps] (setting unit: 1 [step])

Speed Command Input

Set with operating data number
Command range: 0 ~ 1000000 [Hz] (setting unit: 1 [Hz])

Acceleration / Deceleration Command Input

Set with operating data number or parameters.
Acceleration/deceleration rate [ms/kHz] or acceleration/deceleration time [s] can be selected.
Command range: 0.001 ~ 1000.000 [ms/kHz] (setting unit: 0.01 [ms/kHz])
0.001 ~ 1000.000 [s] (setting unit: 0.001 [s])

Acceleration / Deceleration Control

Velocity filter, moving average filter

Return-To-Home Operation

Return-To-Home Method

2-sensor mode This is the return-to-home operation using limit sensors (+LS, -LS).
3-sensor mode This is the return-to-home operation using limit sensors and HOME sensor.
Pushing mode*1 This is the return-to-home operation for pushing to the mechanical end of a linear slide, etc.
Position preset This function allows a home position to be confirmed by inputting P-PRESET using an arbitrary position.
An arbitrary value can be set for the home position.

Positioning Operation

Number of Positioning Points

64 points (No. 0 ~ 63)

Operation Mode

Incremental mode (Relative positioning)
Absolute mode (Absolute positioning)

Operation Functions

One-shot operation This is a PTP (Point to Point) positioning operation.
Linked operation This is a multistep speed-change positioning operation linked to operating data.
Linked operation 2 This is a positioning operation with timer linked to operating data.
The timer (dwell time) can be set in the range of 0 ~ 50.000 [s].
(Setting unit: 0.001 [s])
Push-motion operation*1 Continuous pressurizing position operations are performed with respect to load. The operating speed is maximum 30 r/min] with the motor shaft.

Starting Methods

Operating data selection mode The positioning operation starts when START is input after M0 ~ M5 has been selected.
Direct mode (direct positioning) The positioning operation starts with the operating data number that was set with the parameters when MS0 ~ MS5 has been input.
Sequential mode (sequential positioning) The positioning operation starts in order from operating data No. 0 every time SSTART is input.

Continuous Operation

Number of Speed Points

64 points (No. 0 ~ 63)

Speed-Change Method

This switches the operating data number.

Other Operations

JOG Operation

+JOG or -JOG is input, and regular feeding is performed.

Automatic Return Operation

This automatically returns to the original stopped position when the motor has become misaligned due to an external force during non-excitation.

Control Mode*2

The normal mode or the current control mode can be selected.

Absolute Backup

Using the battery (accessory) makes the absolute system.

*1 Do not perform push-motion operations with geared types. Doing so will damage the motor and gearhead.
*2 Use of the normal mode is recommended unless less heat generation and less noise is required.

Positioning Operation
Return-To-Home Operation

Group Sending Function (via RS-485 communication or Network Converter)

Groups can be configured with multiple axes connected via RS-485 communication, and commands sent to each group. Multi-axis simultaneous starting and identical operations are also possible.

Group Sending

Teaching Function

Teaching can be done using the control module OPX-2A (sold separately) or data setting software MEXE02. The table is moved to the desired position, and the position data at that time stored as the positioning data.

Teaching Function

 

Extended FunctionsExtended Functions

You can combine a control module (OPX-2A) (sold separately) or data setting software* (MEXE02) both to change parameters, add functions and perform various monitoring operations according to the needs of your system.

*Cable for connection to PC required for MEXE02 data setting software (sold separately**- see Accessories).

**One FREE CC05IF-USB communications cable is available per customer, contact Technical Support for more information.

Return Operation

Two return operation functions are available: return to electrical home operation and automatic return operation. With these options, you can easily set up your system to return home when the main power has been cut off due to an emergency stop, etc., or the motor excitation has been turned off.
While the main power is cut off, the control power (24 VDC) must be supplied in order to maintain positioning.

Return to Electrical Home Operation
An operation in which the motor returns to the "position it had assumed when the power was turned on (=electrical home)" or "location set as the electrical home".

Return Home

Automatic Return Operation
An operation in which the motor returns to the "position at which motor excitation was turned off (= the C-ON input turned OFF or FREE input turned ON)."

Automatic Return

Push-Motion Operation

You can input pulses to perform push-motion operation where the load continuously has force applied to it. The amount of force (motor output torque) is set by the push-motion operating current value. Using a control module (OPX-2A) or data setting software (MEXE02) (both sold separately), change the applicable parameter to "Push-motion operation" turn the T-MODE input ON, and input pulses. The motor will start the push-motion operation.

Push-Motion Operation

 

Product Lineup

Select your package based on the Driver Power Supply.

Motor and driver package includes 3 m (9.8 ft.) motor cable. Different lengths and flexible cables are available separately.

Select Motor Frame Size / Driver Power Supply below.
Type Features Motor
Frame Size
Driver Power Supply
Max. Holding
Torque

Standard

Electromagnetic Brake

standard
Round Shaft
Stepper Motor

• Basic model of the AR Series

1.10 in.
(28 mm)
-
7.8 ~ 17 oz-in
(0.055 ~ 0.12 N·m)
1.65 in.
(42 mm)
42 oz-in
(0.3 N·m)
2.36 in.
(60 mm)
142 ~ 280 oz-in
(1 ~ 2 N·m)
3.35 in.
(85 mm)
280 oz-in
(2 N·m)
Type Features Motor
Frame Size
Driver Power Supply
Max. Holding
Torque

Standard

Electromagnetic Brake

Low backlash

TH Geared
Taper Hobbed Gear
(TH Gear)

• A wide variety of low gear ratios, high-speed operation
• Gear ratios: 3.6:2, 7.2:1, 10:1, 20:1, 30:1 [except 1.10 in (28mm)]
• Backlash: 10 ~ 45 arc minute (0.167° ~ 0.75°)

1.10 in.
(28 mm)
-
28 ~ 71 oz-in
(0.2 ~ 0.5 N·m)
1.65 in.
(42 mm)
3 ~ 13.2 lb-in
(0.35 ~ 1.5 N·m)
2.36 in.
(60 mm)
11 ~ 35 lb-in
(1.25 ~ 4 N·m)
3.54 in.
(90 mm)
39 ~ 106 lb-in
(4.5 ~ 12 N·m)
AR PS
Planetary Gear
(PS Gear)

A geared stepper motor achieving superior performance with high permissible torque / maximum torque, high resolution, low backlash with center shaft.

• Backlash: 7 ~ 15 arc minute (0.117° ~ 0.25°)

• Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1 and 50:1 [except 1.10 in (28mm)]

1.10 in.
(28 mm)
-
28 ~ 71 oz-in
(0.2 ~ 0.5 N·m)
1.65 in.
(42 mm)
8.8 ~ 26 lb-in
(1 ~ 3 N·m)
2.36 in.
(60 mm)
30 ~ 70 lb-in
(3.5 ~ 8 N·m)
3.54 in.
(90 mm)
88 ~ 320 lb-in
(10 ~ 37 N·m)
Non-backlash PN Geared
Planetary
Gear
(PN Gear)

High positioning accuracy, high permissible
torque/Maximum torque, high resolution,
non backlash with center shaft.
• Backlash 2 ~ 3 arc minute (0.034° ~ 0.05°)
• Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1, 50:1 [except 1.10 in (28mm)]

1.10 in.
(28 mm)
-
28 ~ 71 oz-in
(0.2 ~ 0.5 N·m)
1.65 in.
(42 mm)
11.9 ~ 13.2 lb-in
(1.35 ~ 1.5 N·m)
2.36 in.
(60 mm)
30 ~ 70 lb-in
(3.5 ~ 8 N·m)
3.54 in.
(90 mm)
88 ~ 320 lb-in
(10 ~ 37 N·m)
HG Geared
Harmonic
Gear
(HG Gear)

• High positioning accuracy, high permissible
torque/Maximum torque, high gear ratio, high
resolution, non backlash with center shaft.
• Non Backlash
• Gear Ratios: 50:1, 100:1
• Backlash: 0 arc minute

1.10 in.
(28 mm)
-
250 ~ 340 oz-in
(1.8 ~ 2.4 N·m)
1.65 in.
(42 mm)
30 ~ 44 lb-in
(3.5 ~ 5 N·m)
2.36 in.
(60 mm)
48 ~ 70 lb-in
(5.5 ~ 8 N·m)
3.54 in.
(90 mm)
220 ~ 320 lb-in
(25 ~ 37 N·m)

 

View Products = View all available part numbers for AR Series Stepper Motor and Driver Systems

System Configuration

Build a complete system online by selecting your base motor and driver and adding all necessary accessories and/or controller.

Build a System

Control Options

Using either the optional control module or data setting software you can change parameters, add functions and perform various monitoring operations according to the needs of your system. (See Extended Functions)

Control Module (OPX-2A)

OPX-2A

Cable for Data Setting Software (CC05IF-USB)*

Cable for Data Setting Software

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

*One FREE CC05IF-USB communications cable is available per customer, contact Technical Support for more information.

MEXE02 Data Setting Software

Cables / Connectors

Motor Connection / Extension Cables

The AR Series includes a 9.8 ft. (3m) cable for connecting the motor and driver. If a different length is needed a Motor Cable or Extension Cable must be used.

Standard Type

Motor Cables Motor Cables

Electromagnetic Brake Type

Brake CablesBrake Extension Cables

RS-485 Communication Cable

This cable is used to link drivers when a built-in controller type is being used in a multi-drop manner.

RS-485 Cable

Enclosure Fans Available for Control Box Cooling

Enclosure Fans for Control Box Cooling

 

Couplings / Brackets

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.

Coupling

Motor Mounting Brackets

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

Mounting Bracket

Battery Set

Battery Set

Connect to the driver when used as the absolute backup system.

Network Converter

Network ConverterNetwork converter is a transducer from the host communication protocol to our unique RS-485 communication protocol. By using this network converter, our RS-485 compatible products can be controlled under host communication environment.

Network Type Product Name
EtherCAT Compatible NETC01-ECT
CC-Link Compatible NETC01-CC
MECHATROLINK - II Compatible NETC01-M2
MECHATROLINK - III Compatible NETC01-M3
EtherCAT CC-Link MECHATROLINK

 


 

 

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