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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.

 

Self Correcting Function

When Self Correcting Function* is enabled and synchronism is lost, the controller makes sure that the motion profile is completed correctly. Total distance remains the same.

*Self Correcting Function requires encoder motor to provide feedback to controller.

Space Saving 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

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

 

Built-in Controller (Stored Data) Package Also Available

The CRK Series 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 Factory Automation (FA) network control via I/O control, Modbus (RTU) control, or a network converter.

Wide Variety of 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 Motor

The basic step angle of the high-resolution type is 0.36°/step, which is half the basic step angle of the standard type.

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, ensures quick torque rise, thereby minimizing the effect of frictional load.

Stop Position Accuracy of 2 Arc Minutes (No load)

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

0.36° / 0.72° High-Torque Motor

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

Geared Type Motors

Taper Hobbed Gear (TH)

A geared 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

Planetary Gear (PS)

A geared 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

Planetary Gear (PN)

A high-accuracy geared motor achieving a backlash of 3 arc minutes or less. It also provides high strength and wide gear ratios.

• Backlash: 2 ~ 3 arc minute
• Gear ratios: 5:1, 7.2:1, 10:1, 25:1, 36:1, 50:1

Harmonic Gear (HG)

A high-accuracy, backlash-free geared 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

500 or 1000 pulse/rev.

3-channel Differential type

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

*Encoder model required for Self-Correcting Function.

Electromagentic Brake Type Motors

Standard type motor featuring a power-off activated brake.

Features of the Built-in Controller

The CRK Series 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 RS-485 communications with mult-drop capability for network operation and I/O control.

Up to 64 Program Sequences

Up to 64 Program sequences are available. Incremental (relative distance specification) mode and Absolute (absolute position specification) mode are available.

3 Operating Modes

• Direct Command - entry from terminal, PLC or master controller
• Stand Alone Operation - running stored programs selected via I/O
• Variable Data - any settable parameter or variable values entered/changed via direct entry from a host will be used by the stored sequence.

RS-485 Communications

• Multi-drop up to 16 units
• PLC or PC based programming
• Warning, Error and Alarm detection
• Suggested USB to RS-485 Converter

Motion Profile Examples

• Repetitive positioning
• Stop via sensor Input
• Continuous operation at variable speeds
• Linked motion, up to four maximum
• Mechanical or Electrical Return to Home
• PLS-OUT function - Drive a second driver with the same pulse count as the first motor.

 

Motion Creator Software (GUI)

• Easily create basic motion such as Incremental, Absolute, Linked and Continuous moves
• Use Program Editor to create complex motion profiles
• Utilize commands from built-in editor with drag and drop
• Easy cloning with Upload/Download functions to PC
• Use Motion Monitor to view all inputs, outputs, motor position and alarm state
• Built-in Help Menu

Motion Examples

[Incremental Operation]

The motor's operating speed and distance of the move are set to perform accoriding to the selected program.

[Linked Operation]

Use up to 4 running speeds between the start and stop positions with each motion having its own distance. After "linking" the data, the different motions will be activated with a single start signal.

[Continuous Operation at Variable Speeds]

The motor speed can easily be changed while the motor runs continuously with a new motion command.

General Specifications

Connection Methods	ASCII Commands via RS-485, no need for dedicated software
Transmission Rate	Selectable up to 115,200 bps
Input Signals	11 Dedicated and 6 General Purpose
Output Signals	2 Dedicated and 4 General Purpose
Number of Sequences	64 Maximum
Power Source	24 VDC

Encoder Type Motors

Motor rotations can be detected by taking in encoder output signals into the built-in controller.

STEPOUT Output Function
If a deviation between the driver's command position and the encoder counter value reaches the setting value (deviation abnormality), a STEPOUT signal is output. This allows for detection of positional errors caused by sudden changes in load, etc.

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

Warning Output Function*
If a deviation abnormality occurs, an overflow warning is generated. The motor will continue to operate

*Whether an alarm or warning is output when the deviation has occured can be set in the parameters.

Self Correction Function
When the Self Correction Function is enabled and synchronism is lost, the controller makes sure that the motion profile is completed correctly. Total distance remains the same.

Return to Home Operation

Return to Home Operation can easily be performed by a home position sensor or a sensor representing a position reference point (home) is available.

PLS-OUT Output Function

Synchronism is available
The PLS-OUT output is used to output the driver's internal oscillation pulse to a second driver allowing for the second motor to be controlled in synchronism with the first. The number of pulses to the output corresponds to the commanded travel and the pulse frequency corresponds to the operating speed.

Used for Position Counting
By counting the output signals, the commanded position of the motor can be checked.

Type		Features	Motor Frame Size		Basic Step Angle	Max. Holding Torque
			No Encoder	Encoder
0.36° High-Torque		A high-torque motor offering higher positioning accuracy with the basic step angle of 0.36°/step, or half the basic step angle of the standard type.	1.10 in. (28 mm)	-	0.36°	5.9 ~ 12.7 oz-in (0.042 ~ 0.09 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)		34 ~ 59 oz-in (0.24 ~ 0.42 N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		110 ~ 320 oz-in (0.78 ~ 2.3 N·m)
0.72° High-Torque		A high torque motor generating high torque of approx. 1.3 to 1.5 times the level achieved by the standard type.	0.79 in (20 mm)	-	0.72°	3.2 oz-in (0.0231 N·m)
			1.10 in. (28 mm)	-		6.8 ~ 11 oz-in (0.048 ~ 0.078 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)		34 ~ 59 oz-in (0.24 ~ 0.42 N·m)
Standard		The basic model in the CRK Series offering an optimal balance of torque, low vibration and low noise.	1.65 in. (42 mm)	1.65 in. (42 mm)	0.72°	18.4 ~ 34 oz-in (0.13 ~ 0.24 N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		59 ~ 230 oz-in (0.42 ~ 1.66 N·m)
Electromagnetic Brake		Standard type motor featuring a power-off activated brake.	1.65 in. (42 mm)	-	0.72°	18.4 ~ 34 oz-in (0.13 ~ 0.24 N·m)
			2.36 in. (60 mm)	-		59 ~ 230 oz-in (0.42 ~ 1.66 N·m)
	TH Geared (Taper Hobbed)	A geared 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	1.10 in. (28 mm)	-	0.024° - 0.1°	28 ~ 71 oz-in (0.2 ~ 0.5 N·m)
			1.65 in. (42 mm)	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)	2.36 in. (60 mm)		11 ~ 35 lb-in (1.25 ~ 4 N·m)
	PS Geared (Planetary Gear)	A geared 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	1.10 in. (28 mm)	-	0.072° - 0.144°	28 ~ 56 oz-in (0.2 ~ 0.4 N·m)
			1.65 in. (42 mm)	1.65 in. (42 mm)	0.0144° - 0.144°	8.8 ~ 26 lb-in (1.0 ~ 3  N·m)
			2.36 in. (60 mm)	2.36 in. (60 mm)		30 ~ 70 lb-in (3.5 ~ 8 N·m)
	HG Geared (Harmonic Gear)	A high-accuracy, backlash-free geared 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)

All necessary cables are included with the package. RS-485 cable sold separately. Suggested USB to RS-485 converter documentation available in Downloads & Reference.

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

RS-485 Communication Cable

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

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)

Connection 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)

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

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