Archive for the ‘Step’ Category

Oriental Motor USA is pleased to announce the introduction of the CRK Series 5-phase stepping motor and driver package with a built in controller. The CRK Series with built in controller is a compact, space saving 5-phase stepping 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. Oriental Motor developed this product based upon the request of our customers for an integrated “Stand-alone” driver controller that is cost effective and can easily be networked. Utilizing the CRK platform of products, Oriental Motor integrated a powerful controller to meet this demand while improving upon common microstepping performance offerings in the market by utilizing our 5-phase, new pentagon technology.

The benefits of the CRK Series with built in controller are:

5-phase motors:
• Lower Vibration
• Increased positional accuracy
• Higher resolution
• Wide motor variations for many different applications

Built in controller:
• 3 Operation Modes for control
• RS-485 Communications
• Multiple motion profile options available
• Compact and space savings
• No additional software to buy

The CRK Series product line consists of a compact high performance microstepping driver with up to a maximum step divide of 250 per step, all the advantages of 5-phase performance with Oriental Motor’s proprietary Smooth Drive technology built in. 24 VDC input Unit packages offer an industry leading selection of motor sizes and performance characteristics to meet a wide variety of application demands.

CRK Series with Built in Controller Features and Benefits Motor options:

• High-Resolution type with a basic step angle of 0.36 degree and a stop position accuracy of 2 Arc Minutes (0.034 degree) with no load.
• High-Torque type with 1.3 ~ 1.5 times more torque than compared to our standard 5-phase motor.
• Standard type which offers a good balance of torque and low vibration.
• Tapered Hob geared type effective for inertia reduction, increased torque and resolution with a backlash of 10-60 arc minutes (0.167~1 degree) depending on gear ratio.

3 Driver Operation Modes:
The ability to start or modify stored motion programs through 3 specific operating modes was designed to meet the demands of many different types of applications and industry requirements providing for maximum design and motion control flexibility.

• Direct command entry from terminal, PLC or Master controller. With this method, any command received by the driver sent from a computer, PLC or other master controller will be executed immediately.
• Stand alone operation of running stored programs selected via I/O. With this method, programs that have been previously written and stored in the driver’s memory can be executed by turning on the appropriate combination of inputs and then turning on a START input.
• Running of stored sequences while passing data into the sequences as needed from a computer, PLC or other master controller. With this method, any settable parameter or variable values entered/changed via direct entry from a computer, PLC or other master controller will be utilized when a stored sequence is run.

RS-485 Communications:
By incorporating this robust and cost effective communication method, the CRK Series with built in controller can easily be used with existing PLC or PC master controls in a network or as a stand alone unit without the need for expensive cables or proprietary networks.

• Ability to multidrop up to 16 units.
  *Note: The termination resistor switch on the last unit in line needs to be turned to the on position to ensure proper communication.
• Accepts PLC or PC based programming (ASCII commands), no need for dedicated software.
• Provides warning, alarm or error detection

Multiple Motion Profile examples

• Repetitive positioning
• Stopping via Sensor Input
• Continues operation at variable speeds
• Linked motion, up to 4 moves maximum
• Mechanical or electrical return to home
• PLS-OUT function – Can drive a second driver (driver only, no controller need in second unit) with the same pulse count as the first motor

Space Saving
The driver has a compact size of 1.37in (35mm) width x 3.97in (100mm) length x 2.75in (70mm) depth which helps contribute to a space-saving controller box and device set up.
The drive is made for direct DIN rail mounting, screws are not necessary.

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	24VDC

Included with Purchase of:
Unit

• Motor
  (Connector type motor lead wires for *High resolution or *High torque motor included)
• Driver
• Motor lead wire with connector to driver (flying lead wire to motor)
• Flat cable (I/O connection to driver)
• Connector for power supply connection
• Information (quick user manual).

Driver only:

• Driver
• Motor lead wire with connector to driver (flying lead wire to motor)
• Flat cable (I/O connection to driver)
• Connector for power supply connection

Motor only:

• Motor
  * For High resolution and High torque motors, lead wire with motor connector needed to be ordered separately

Accessories

• RS 485 Jumper cable (Multi-drop)
• Encoder driver cable
• Motor Extension cable

 

For product details please check out the CRK Brochure

 

Oriental Motor’s new 2-phase  20mm frame size stepping motor is now available

 

 

 

 

 

• Features

Small-Size • Light-Weight	High-Torque
Frame size 20mm, mass 50g of miniaturisation and lightening are realised. The products are the smallest and lightest motor in the PK series.	This 2-Phase stepping motor adopts Orientalmotor’s high torque technology.

• Product Lineup

Unipolar 5 Leads	Bipolar 4 Leads
Model (Single Shaft) Model (Double Shaft) PK213PA PK213PB	Model (Single Shaft) Model (Double Shaft) PK213PDA PK213PDB

• Specifications

Model		Maximum Holding Torque N・m	Rotor Inertia J:kg・m2	Rated Current A/Phase	Voltage V	Resistance / Phase	Basic Step Angle	Motor Mass kg
Single Shaft	Double Shaft
PK213PA	PK213PB	0.014	1.6×10-7	0.5	4.25	8.5	1.8゜	0.05
PK213PDA	PK213PDB	0.02	1.6×10-7	0.5	4.25	8.5	1.8゜	0.05

• Speed-Torque Characteristics fs: Maximum Starting Frequency

Unipolar 5 Leads	Bipolar 4 Leads

• Dimensions (Unit = mm)

Unipolar 5 Leads	Bipolar 4 Leads

 

For more information, here is the PK 20mm Data Sheet

 

PK Series 2-Phase Stepping Motor – Expanded Lineup Now offers High Torque – High Efficiency Type

Oriental Motor USA is pleased to announce the PKE High Torque – High Efficiency type stepping motor, an industry leading new motor designed to provide maximum torque while creating efficiencies currently not available in the stepper motor market. The PKE motors produce the same amount of torque as our high torque PK-P type stepping motors while greatly reducing the heat generated, allowing for 100% duty cycle operation. On top of these significant benefits, it is aggressively priced to be the same as our PK-P motors.

How does the PKE achieve such a dominate position? The R&D engineers at Oriental Motor utilized new technology in the form of new materials, advanced stator and rotor design and new construction methods to achieve performance unlike any other stepping motor in the market. These advantages are also supported by a short lead-time, two types of winding options along with two driver options, if desired, for optimum guaranteed performance. In summary, the PKE 2 phase stepping motors provide more torque, saves energy and generate less heat than any conventional stepping motor on the market today with a competitive price. The time is now to introduce and demonstrate the advantages only Oriental Motor can offer.

New Line up:

• 42mm (1.65 in.)
• 3 motor stack lengths (PKE243, PKE244, PKE245)
  *Dimensions are same as PK-P 42mm series
• Bipolar (4 lead wire) or Unipolar (6 lead wire)
  * Note: L – at the end of the part number, includes lead wire connector assembly of 2 ft. (0.6m).

Benefit of new motors:

• More Torque – 1.2 to 1.5 times more torque at rated current than a conventional 2 phase stepping motor. This allows for space savings
  Oriental Motor USA Corporation – Confidential 2 through downsizing of the motor or taking advantage of more torque in the same size motor.
• Saves Energy – by requiring up to 40% less power to be consumed at rated current, these high efficiency motors require less power to produce the rated torque thus allowing for smaller power supplies.
  • Lower input power to get equivalent output torque →
    Lower driver power consumption
  • Lower input power to get equivalent output torque →
    Smaller Power Supply
  • Lower motor losses →
    Lower motor heat generation

  

• Generates less heat – up to 78% (measured in °C) lower temperature rise when compared to a conventional stepping motor, when producing the same torque level. Running at rated current with 1.2 ~ 1.5 more torque, the PKE motor runs up to 50% cooler. This increases the service life of the motor, reduces the need for additional cooling and provides advantages to applications sensitive to thermal expansion.

Microstepping Driver Options (20~40VDC or 24VDC):

• For bipolar performance, up to 40 VDC, the RBD215A-K is recommended
• For unipolar performance CMD2109P or CMD2112P is recommended.

 

I’m trying to decide between a 5-phase step motor system and a 2-phase step motor system. Can you tell me the differences?

A: In a motor application where noise or vibration is a concern, a 5-phase step motor system would be ideal especially at low speeds.

Introducing an advanced version of AlphaStep, the AR Series from Oriental Motor. The demand for stepping motors that have high efficiency and low losses has been increasing, although it had been previously focused on high torque. The selection of the most suitable grade for and the improvement in fastening of the laminated cores has reduced the losses significantly at their peak when compared to conventional stepping motors which have a 50% duty cycle. Lowering the losses of the motor has enabled continuous operation that was previously impossible. An expansion of the stepping motor’s usage into applications where another motor has been used for continuous operation and other uses due to the heat generation problem can now be pursued. In addition, these motors are very effective for energy saving. For product details please check out the AR Product Brochure For further information on how this technology works here is the AR White Paper

Key benefits: Lower Heat Generation: The AR Series utilizes high-efficiency technology to achieve a significant reduction in the amount of heat generated from the motor. The motor generates significantly less heat than the conventional model as seen in the thermography results below. The graph below shows the difference in temperature of the motor case over the same period of time under the same operating conditions.

Continuous Operation: The AR Series can be operated at high duty cycles. You can drive the motor continuously. Note: If the 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.

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.

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

Up to 40% Less Power Consumption: Power consumption: up to 40% less than our conventional models. CO2 emission: up to 40% less than our conventional model (assuming operation at a duty of 40%).