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Modbus / RS-485 Stepper Motor and DC Input Driver

.
Modbus / RS-485 Stepper Motor and Driver

FLEXModbus / RS-485 Stepper Motor and Driver Packages - CRK Series

The CRK Series Modbus / RS-485 system is a DC input, 0.36°/0.72° stepper motor and driver package with the controller function built into the driver. The CRK Series is available with 5 frame sizes of 0.79 in. (20 mm), 1.10 in. (28mm), 1.18 in. (30mm), 1.65 in. (42 mm) and 2.36 in. (60 mm) and 4 geared types.

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.

Advanced SearchSafety Marks

Lowest Vibration and Noise is Achieved

The CRK Series uses a 0.36° or 0.72° stepper motor and is able to divide the basic step angle of the motor into a maximum of 250 microstep angles without using any mechanical elements such as a reduction gear. As a result, vibration and noise are greatly reduced.

Lower Vibration

 

Space Saving Driver

Driver

The compact driver with built-in controller saves space.

The driver can be mounted on a DIN Rail.



Pulse Input Type Package Also Available

CRK Series

The CRK Series Stepper Motors with Pulse Input Type Driver is a stepper motor and driver package. The stepper motor is controlled from a pulse generator (not supplied) and a compact, board level driver.

 

Built-in Controller (Stored Program) Package Also Available

CRK+ Series

The CRK Series Stepper Motors with built in controller is a compact, space saving stepper motor and driver package with a powerful, feature-rich controller built-in. The driver supports stand alone or RS-485 communications with multi-drop capability for network operation and I/O control.


Wide Variety of Stepper Motors

This series offers models ranging from the high-torque type and standard type, as well as various geared types.
You can find a product meeting your specific torque, resolution or other needs from a wide range of specifications.

0.36° High-Torque, High-Resolution Stepper Motor

High-ResolutionThe basic step angle of the high-resolution type stepper motor is 0.36°/step, which is half the basic step angle of the standard type stepper motor.

The positioning accuracy of stepper motors is affected by frictional load. The CRK's high-resolution type, having a smaller basic step angle and capable of generating approximately 1.5 times the torque of the standard type stepper motor, ensures quick torque rise, thereby minimizing the effect of frictional load.

Hi ResolutionAngle-Torque Characteristics

Stop Position Accuracy of 2 Arc Minutes (No load)

The 0.36° High-Torque Type stepper motors is designed with a stop position accuracy of 2 arc minutes (0.034°) [standard type stepper motor: 3 arc minutes (0.05°)]. The reduced error helps improve the positioning accuracy of your equipment.

Static Angle Characteristics

0.36° / 0.72° High-Torque Stepper Motor

High-Torque The high-torque type stepper motors adopt a newly designed high-torque motor that widens the range of applications.
- The smaller stepper motor allows for compact equipment design.
- The stepper motor current is reduced to suppress heat generation.

Speed v Torque

Geared Type Stepper Motors

TH GearedTaper Hobbed Gear (TH)

A geared stepper motor achieving both low backlash and low cost.

• Backlash: 10 ~ 60 arc minute
• Gear ratios: 3.6:2, 7.2:1, 10:1, 20:1, 30:1


PS GearedPlanetary Gear (PS)

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

• Backlash: 15 ~ 35 arc minute
• Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1 and 50:1


HG GearedHarmonic Gear (HG)

A high-accuracy, backlash-free geared stepper motor adopting a newly developed harmonic gear. It ensures high strength in a compact body.

• Backlash: 0 arc minute
• Gear Ratios: 50:1, 100:1

Encoder Models Available

Encoder Models Available

500 or 1000 pulse/rev.

3-channel Differential type

Motor rotations can be detected by taking in encoder output signals into a programmable controller.

Electromagnetic Brake Type Stepper Motors

Brake Type

Standard type stepper motor featuring a power-off activated brake.


 

Space Saving, Reduced Wiring

Since a pulse generator is not required and the driver is also compact, space saving and system simplification are achieved.

No Pulse Generator Needed

Maximum 63 Points of Operating Data

Up to 63 points of operating data can be set in the driver. Setting of incremental (relative-distance specification) mode and absolute (absolute-position specification) mode for each data is possible.

63 Data Points

Operating data is set with either the accessory control module OPX-2A (sold separately), the data setting software MEXE02, or RS-485 communication.

Positioning Operation

The motor's operating speed and traveling amount are set in the operating data and operations are performed in accordance with the
selected operating data.

Linked Operation

If the operating data is set to "linked", continuous positioning with the
following data number is possible with one START signal.

[Linked Operation]
If data No. 01 is selected and the START input, linked driving from data No. 01 to No. 03 is performed without the motor stopping.

Linked operation

[Linked Operation 2]
If data No. 01 is selected and the START input, the data No. 01 operation is executed. After that, it is stopped for only the set dwell time1 and then the operations from data No. 02 to No. 03 are executed. Operating data with a different rotation direction can also be linked.

1Dwell time is the wait time until the next position operation starts.

Linked operation

Sequential Operation

If the operating data is set to "sequential positioning", positioning of the next data number is performed in sequence every time a START signal is input.

Speed Control Operation

The motor operates continuously while a FWD signal or RVS signal
is input. Because it operates at the speed of the operating data
set beforehand, multistep speed-change operation is possible by
changing the data number.

Data

Return to Home Operation

Equipped with a sequence for return-to-home operation that reduces
the burden of the host (master controller) and the hassle of combining
programs or sequences. A separate sensor is required.

Return to Home

Group Sending Function

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

Group Send

Encoder Type Motors

Motor rotations can be detected by receiving encoder feedback
directly to the built-in controller.

Encoder

STEPOUT Output Function
If the deviation between the driver command position and encoder counter value reaches the setting value (deviation abnormality), a STEPOUT signal is output. Positional errors for example due to rapid changes in load can be detected.

Alarm Output Function*
When a deviation abnormality occurs, an overflow alarm is generated and the motor is stopped.

Warning Output Function*
When a deviation abnormality occurs, an overflow warning is generated. The motor continues to operate.

*Parameters can be set so an alarm or a warning is output when a deviation abnormality has occurred.

PLS-OUT Output Function

Synchronous Operation is Possible
A signal with the same pulse number and pulse speed as the command value is output. A PLS-OUT signal and DIR-OUT signal (rotation direction signal) are input into another driver, allowing a motor on a separate axis to be driven.

Used for Position Counting
The command position to the motor can be confirmed by counting the output signals.

FLEX

Equipped with an Interface that Connects to Various Master Control Systems and Industrial Networks

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
FLEX

 

Product Lineup

Type

Features

Motor Frame Size
Basic Step
Angle
Max. Holding
Torque
No Encoder
Encoder
High-Resolution
0.36° High-Torque
Stepper Motor

A high-torque stepper motor offering higher positioning accuracy with the basic step angle of 0.36°/step, or half the basic step angle of the standard type.

-
0.36°
5.9 ~ 12.7 oz-in
(0.042 ~ 0.09 N·m)
34 ~ 59 oz-in
(0.24 ~ 0.42 N·m)
110 ~ 320 oz-in
(0.78 ~ 2.3 N·m)

High-Torque
0.72° High-Torque
Stepper Motor

A high torque stepper motor generating high torque of approx. 1.3 to 1.5 times the level achieved by the standard type.

-
0.72°
3.2 oz-in
(0.0231 N·m)
-
6.8 ~ 11 oz-in
(0.048 ~ 0.078 N·m)
34 ~ 59 oz-in
(0.24 ~ 0.42 N·m)
Standard
Standard
Stepper Motor

The basic stepper motor model in the CRK Series offering an optimal balance of torque, low vibration and low noise.

0.72°
18.4 ~ 34 oz-in
(0.13 ~ 0.24 N·m)
59 ~ 230 oz-in
(0.42 ~ 1.66 N·m)
Brake Type
Stepper Motor with Electromagnetic Brake

Standard type stepper motor featuring a power-off activated brake.

-
0.72°
18.4 ~ 34 oz-in
(0.13 ~ 0.24 N·m)
-
59 ~ 230 oz-in
(0.42 ~ 1.66 N·m)
Low Backlash
TH Geared
TH Geared
(Taper Hobbed)

A geared stepper motor achieving both low backlash and low cost.
• Backlash: 10 ~ 60 arc minute

• Gear ratios:  3.6:2, 7.2:1, 10:1, 20:1, 30:1

-
0.024° - 0.1°
28 ~ 71 oz-in
(0.2 ~ 0.5 N·m)
1.65 in. (42 mm)
0.024° - 0.2°
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)
PS Geared
PS Geared

(Planetary Gear)

A geared stepper motor achieving superior performance with high permissible torque / maximum torque, high resolution, low backlash with center shaft.
• Backlash: 15 ~ 35 arc minute

• Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1 and 50:1

-
0.072° - 0.144°
28 ~ 56 oz-in
(0.2 ~ 0.4 N·m)
1.65 in. (42 mm)
0.0144° - 0.144°
8.8 ~ 26 lb-in
(1.0 ~ 3  N·m)
2.36 in. (60 mm)
30 ~ 70 lb-in
(3.5 ~ 8 N·m)
Non-Backlash
HG Geared
HG Geared
(Harmonic Gear)

A high-accuracy, backlash-free geared stepper motor adopting a newly developed harmonic gear. It ensures high strength in a compact body.
• Backlash: 0 arc minute

• Gear Ratios: 50:1, 100:1

0.79 in. (20 mm)

-

0.0072° - 0.0144°
3.5 ~ 5.3 lb-in
(0.4 ~ 0.6 N·m)
1.18 in. (30 mm)

-

15.9 ~ 21 lb-in
(1.8 ~ 2.4 N·m)
1.65 in. (42 mm) 1.65 in. (42 mm)
30 ~ 44 lb-in
(3.5 ~ 5 N·m)
2.36 in. (60 mm) 2.36 in. (60 mm)
48 ~ 70 lb-in
(5.5 ~ 8 N·m)

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

System Configuration

All necessary cables are included with the package. RS-485 cable sold separately.

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

Build a System

Couplings / Brackets

Flexible Couplings

Motor Cables

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.

Motor Mounting Brackets

Mounting Bracket

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

 

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

RS-485 Communication Cable

RS-485 Cable

These cables are used to link drivers when a built-in controller type is being operated in a multi-drop manner.

Clean Dampers

Clean DamperMechanical 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)


Connection Cables

Extension Cables

These cables extend the distance between the motor and driver. The motor includes a 2 ft. (600 mm) cable. Use a flexible motor cable if the motor is installed on a moving part or its cable will be flexed.

Connection Cables for Connector Type Motors
(included in package)

Cables

This lead wire connection cable with a conveniently crimped connector is for connector-coupled motor, and for connecting motors and drivers.

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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