5-Phase Stepper Motors PKP Series – PK Series Oriental Motor

High Accuracy

Since the step angle of 5-phase PKP Series is at 0.72˚ (high-resolution type at 0.36˚) and the stopping accuracy is at ±0.05˚, highly accurate positioning is possible. In addition, the stop position accuracy controlled by a microstep driver has almost the same high accuracy as that controlled by a full-step driver.

Stopping Accuracy Does Not Get Worse With Microstep

(5-Phase CVD Series Driver + 5-Phase PKP Series Motor)

Low Vibration

As the 5-phase PKP Series has a small basic step angle of 0.72˚ (0.36˚ for high-resolution type), it is lower in vibration and noise than 2-phase stepper motors with a basic step angle of 1.8˚. Also, vibrations and noise can be further reduced through control with the driver of the microstep drive.

Example of 2-Phase Stepper Motor Vibration Characteristics

Example of 5-Phase Stepper Motor Vibration Characteristics

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.

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’s Main Specifications

Type	Standard Type
Resolution	500 P/R, 1000 P/R*
Angular Accuracy	±0.36° (converted value at motor output shaft)
Output Signals	Phase A, Phase B, Phase Z (3ch)

• *The standard types with a frame size of 42 mm and 60 mm are also available with a resolution of 1000 P/R.

Angle Accuracy

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

Motor Position Detection is Possible

Monitoring the current position and detecting positional errors are possible.
For example, comparing the command position and current position enables you to check the normal operation of the motor.

System Configuration Example

• *Converted value at motor output shaft

Enables Highly Repeatable Return-to-Home Functioning

Since the Z-phase signal is output at the step “0” position (stability point), it can be a substitute for the home sensor (a sensor attached to the motor shaft that detects the home within one revolution).
It also makes it easier to use the Z-phase output signal and TIM output signal^* together and improves the repeatability of the return-to-home function.

• *This is the signal output from the driver each time the motor output shaft rotates 7.2° (3.6° for high-resolution types) from the home position.

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 (stability point).

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.

Compact Encoder Equipped

When frame size is 56.4 mm

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

Choose Between Voltage Output Type and Line Driver Output Type

A voltage output type and line driver output type are available.
A useful cable for wiring the encoder is also available separately.