คุณลักษณะ | 2-Phase Stepper Motor PKP/PK Series

Higher Torque

Higher current is now possible due to a review of the motor winding design. Increased torque over the entire speed range from low to high is achieved.

Comparison of Speed - Torque Characteristics of the Same Size Motors

Comparison of Maximum Holding Torque

Energy and Power Saving

By reducing the operating current supplied to the motor, the same torque as conventional products can be obtained while reducing power consumption and CO₂ emissions.

Power consumption and CO₂ emissions are reduced by 56 % compared to the conventional products (compared to our products)

Rotation Speed	0.1 kHz (30 r/min)
Operating Time	24 hours a day, 365 days a year
Operation Status	50 % operating, 50 % stand by
Power Supply Voltage	24 VDC
CO2 Coefficient	0.519 kg-CO2/kWh

Low Vibration

Revising the magnetic design has achieved lower vibration than with conventional products.

Click here for details on, such as an overview, characteristics, and features of this product (Technical Report)

Save Resources Through Downsizing

Torque improved considerably compared to conventional products. When compared at equivalent torque, using the PKP Series enables motor downsizing. This helps to save space and reduce the weight of the equipment.

44 % reduction in volume when comparing dimensions!

Product Name	PK264-02A	PKP244U12A2
Maximum Holding Torque (N·m)	0.39	0.39
Frame Size (mm)	56.4	42
Mass (kg)	0.45	0.3

Compact and Flat Connector

The PKP Series uses a compact and flat connector, which lowers the connector's overhang (excluding some products). In addition, flexibility for the motor cable outlet direction has been increased, as outlet direction points upward.

• *For details, refer to the dimensions diagram of each motor.

Click here for details on the development (Technical Report)

With Encoder

Models equipped with an encoder are available. Comparing the command position and current position enables you to check the normal operation of the motor.

Encoder Main Specifications

Type	Standard type	High-resolution type, SH geared Type	Flat type, Harmonic geared type
Resolution	200 P/R, 400 P/R*	400 P/R	200 P/R, 400 P/R, 1000 P/R
Angular Accuracy	±0.36˚ (Converted value at motor output shaft)
Output Signal	Phase A, Phase B, Phase Z (3ch)

• *For frame sizes of 13 mm, 42 mm and 56.4 mm, products with a resolution of 1000 P/R are also available.

Angular Accuracy

This is the calculation error between the actual rotation angle and the angle output from the encoder.

Motor Position Detection is Possible

It is possible to detect the motor's current position.
By comparing the command position with the feedback position, it is possible to detect abnormalities such as loss of synchronization.
The detection accuracy (±0.36°) is guaranteed, it can be used safely for position detection purposes.

System Configuration Example

• *Converted value at motor output shaft

Enables Highly Repeatable Return-to-Home Functioning

The step "0" position, encoder, and Z-phase signal position of the motor are adjusted by Oriental Motor and shipped assembled.
It can be used as a home sensor (a sensor mounted on the motor shaft that detects the home position within a single rotation).

This makes it easier to use the Z-phase output signal and TIM output signal^* together to improve the repeatability of the return-to-home function.

• *The signal output from the driver for each step "0" position (stable point).
  Output occurs every time the motor output shaft rotates 7.2° (3.6° for high-resolution type) from the home.

When the Timing of Z-phase Output is Not Fixed

Since the output timing of the Z-phase signal is not fixed, it is difficult to use it as a substitute for the home sensor, and it is also difficult to use it together with the TIM signal.

When the Timing of Z-phase Output is Fixed
New Encoder (Magnetic type)

It outputs Z-phase signals with a width of ±3.6° centered on the step "0" position (stable point).

Equipped With a Compact Magnetic Encoder

Because it is a compact encoder, it helps save space in the equipment.
As it is a magnetic encoder, it is resistant to dust, condensation, and vibration, thus maintaining stable performance.

When the frame size is 56.4 mm

• *The orange area in the dimensions diagram is the encoder section.

Choose Between Voltage Output and Line Driver Output

A voltage output and line driver output are available^*.
A convenient cable for wiring the encoder is also available separately.

• *The standard type with a frame size of 13 mm and the harmonic geared type are available in voltage output and open-collector output versions.