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The following marks are indicated on the nameplates of approved products. Learn More.
UL recognized component.
Recognized to Canadian safety requirements under the component Recognition Program of Underwriters Laboratories Inc.
Recognized to Canadian Safety requirements and UL under the component Recognition Program of Underwriters Laboratories Inc.
CSA certified component.
EN and IEC certified component (indicates that VDE, TÜV Rheinland or DEMKO has certified that the product meets EN or IEC standards.)
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The CRK Series is a motor/driver unit combining a high-performance, 5-phase stepping motor with a compact, low-vibration microstepping driver offering the Smooth Drive Function. Four frame sizes of 0.79 in. (20 mm), 1.10 in. (28mm), 1.65 in. (42 mm) and 2.36 in. (60 mm) are available and there are models fitted with various gearheads.
Smooth Drive Function for Enhanced Ease of Use
The Smooth Drive Function automatically controls operations via microstep drive at the same travel distance and speed used in the full-step mode, without requiring the operator to change the pulse input settings. This function is particularly useful when the CRK Series is used in full-step or half-step mode.
Newly Designed Motors
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 stepping 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.
High-Torque Motor
The high-resolution type and 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.
Compact, Lightweight Microstepping Driver
The driver in the CRK Series achieves microstep drive in a compact, lightweight body. A new IC allows the driver to provide various functions, including the following:
- Smooth Drive Function
- 1-pulse/2-pulse input mode switching
- 25 preset step angles
- Power LED
- Photocoupler input
The compact, lightweight driver in the CRK Series is approximately 45% smaller than a conventional full-step driver.
Lower Vibration and Noise Achieved by Microstep Drive
The basic step angle of the motor can be divided into a maximum of 250 microstep angles without using any mechanical element such as a reduction gear. As a result, vibration and noise are further reduced.
Improved 5-Phase Performance can Usually be Easily Integrated into an Existing 2-Phase System
The basic step angle can be adjusted to match a 2-phase stepping motor's step angles, so a switchover from the 2-phase microstep mode can be easily made without having to change input pulses.
RoHS Compliant
RoHS (Restriction of Hazardous Substances) Directive:
Directive on restriction of the use of certain hazardous substances in electrical and electronic equipment (2002/95/EC).
The RoHS Directive prohibits the use of six chemical substances in electrical and electronic products sold in the EU member states. The six controlled substances are: lead, hexavalent chromium, cadmium, mercury and two specific brominated flame-retardants (PBB and PBDE).