PKP Series 2-Phase Bipolar Stepper Motors

2-phase bipolar stepper motors

PKP Series 2-Phase Bipolar Stepper Motors

High-Torque 2-Phase bipolar stepper motors and Spur Gear (SH Type) stepper motors offer the optimum performance and value. In addition to offering high torque, the PKP series stepper motors offer more variety of electrical specifications, more frame sizes, encoder options and electromagnetic brake options for the right solution in stepper motors.

  • Offers 1.2 ~ 1.7 Time More Torque
  • 1.8° (200 pulse/rev) & 0.9° (400 pulse/rev)
  • SH Geared (Spur) Type for Inertia Matching & Higher Torque
  • Bipolar (4 lead wires)
  • Encoders - 200 or 400 Lines of Resolution
  • Electromagnetic Brake Type
  • Bipolar Stepper Motor Drivers Available

Stepper Motor Lineup

Frame Size

Motor Types

Available Options

Current per Phase

Lead Wires

Max. Holding Torque

NEMA 8 stepper motors

0 .79 in. (20 mm)
NEMA 8

Standard Type (1.8°)

Encoder

0.5 or 0.6 A

4

28 ~ 52 oz-in

0.2 ~ 0.37 N·m

NEMA 11 stepper motors


1.10 in. (28 mm)
NEMA 11

Standard Type (1.8°)

Encoder
Electromagnetic Brake

0.67 or 1.5 A

4

49 ~ 132 oz-in

0.35 ~ 0.93 N·m

Geared Type

-

42 ~ 56 oz-in

0.3 ~ 0.4 N·m

NEMA 14 stepper motors


1.38 in. (35 mm)
NEMA 14

Standard Type (1.8°)

Encoder

0.85 or 1.5 A

4

28 ~ 52 oz-in

0.2 ~ 0.37 N·m

NEMA 17 stepper motors


1.65 in. (42 mm)
NEMA 17

Standard Type (1.8°)

Encoder
Electromagnetic Brake

0.28 ~ 1.5 A

4

49 ~ 132 oz-in

0.35 ~ 0.93 N·m

High-Resolution (0.9°)

0.67 ~ 1.5 A

42 ~ 59 oz-in

0.3 ~ 0.42 N·m

Geared Type

-

0.67 or 1.5 A

28 ~ 113 oz-in

0.2 ~ 0.8 N·m

NEMA 23 / NEMA 24 stepper motors


2.22 in. (56.4 mm)
NEMA 23
2.36 in. (60 mm)*
NEMA 24*

Standard Type (1.8°)

Encoder
Electromagnetic Brake

0.71 ~ 4.2 A

4

85 ~ 320 oz-in

0.6 ~ 2.3 N·m

High-Resolution (0.9°)

1.4 ~ 2.8 A

Geared Type

-

0.71 ~ 2.8 A

140.8 ~ 560 oz-in

1 ~ 4 N·m

NEMA 34 85mm stepper motors

3.35 in. (85 mm)
NEMA 34

Standard Type (1.8°)

- 4.5 ~ 6.3 A 4 467 ~ 1345 oz-in 3.3 ~ 9.5 N·m

*Geared stepper motor frame size.


 

Standard Type Stepper Motors (1.8°/Step)

  • 0.79 in. (20 mm)
  • 1.10 in. (28 mm)
  • 1.38 in. (35 mm)
  • 1.65 in. (42 mm)
  • 2.22 in. (56.4 mm)
  • 3.35 in. (85 mm)

High-Torque PKP Series Stepper Motors

standard type stepper motor

By using a high-torque motor, a torque increase of 1.2 to 1.7 times the conventional stepper motor of the same size (max. holding torque) has been achieved.

high torque stepper motors maximum holding torque

Reduced Power Consumption and Heat Output

If the running current of a PKP Series stepper motor is decreased and the motor is operated at the same torque as the PK Series standard type, current consumption and heat output can be reduced.

Characteristics Diagrams of Decreased Running Current in PKP Series Stepper Motors

stepper motor decreased running current

Power Consumption Reduced by 20% (at low speed)

Comparison of driver power consumption when low speed torque is tailored to the PK Series standard type stepper motor.

stepper motor reduced power consumption

Temperature Increases of 10°C (18°F) and More are Suppressed

Comparison of stepper motor surface heat output when low-speed torque is tailored to the PK Series standard type

stepper motor reduced heat output

Downsizing

The PKP Series stepper motors provide torque equivalent to a stepper motor of the next larger frame size, contributing to downsizing of equipment.

stepper motor frame size

High-Resolution Type Stepper Motors (0.9°/step)

  • 1.65 in. (42 mm)
  • 2.22 in. (56.4 mm)

Increased Resolution (Compared to Standard Type)

high-resolution stepper motor

The number of rotor teeth has doubled to 100 compared to 50 with the standard type stepper motor. As a result, the basic step angle becomes 0.9°/step which is half that of the standard type stepper motor.

high resolution stepper motor

These high resolution stepper motors have half the step angle of standard stepper motors. The high resolution type increases motor resolution from 200 steps/revolution to 400 steps/revolution. Smaller step angles can be achieved by half-step driving or microstep driving. Other than having twice as many rotor teeth as standard stepper motors, all other structures are exactly the same as standard stepper motors.

stepper motor improved resolution

Improved Stopping Accuracy (Compared to Standard Type)

The stopping accuracy improves as the torque increases while minimizing the negative effect of the frictional load.

stepper motor speed - torque

Downsizing

The PKP Series stepper motors provide torque equivalent to a stepper motor of the next larger frame size, contributing to downsizing of equipment.

stepper motor frame size

Avoidance of Resonance Regions

If the pulse speed is within resonance region, vibration may increase. Resonance regions can be avoided by switching to a 0.9° high-resolution type stepper motor.


SH (Spur) Geared Type Stepper Motors

  • 1.10 in. (28 mm)
  • 1.38 in. (35 mm)
  • 2.36 in. (60 mm)

Broader Permissible Speed Range than Conventional Products

geared stepper motors

The New SH geared lineup now offers up to 60% more speed than current conventional models and is effective for increasing torque, achieving higher resolution and reducing vibration.

geared stepper motor speed range

Backlash Accuracy Guaranteed

Backlash, which was a reference value in conventional models, is now a specification value.

Unit = arc min (degrees)

Frame Size

Gear Ratio

3.6

7.2

9

10

18

36

28 mm (1.10 in.)

-

90 (1.5°)

42 mm (1.65 in.)

90 (1.5)

60 (1°)

60 mm (2.36 in.)

70 (1.17)

45 (0.75°)

Encoder Equipped Stepper Motors (1.8° or 0.9°)

  • 0.79 in. (20 mm)
  • 1.10 in. (28 mm)
  • 1.38 in. (35 mm)
  • 1.65 in. (42 mm)
  • 2.22 in. (56.4 mm)

Encoder Type Stepper Motors

encoder type stepper motor

A rotary encoder is an electro-mechanical device that converts the angular position of a shaft to an analog or digital code. There are two main types: absolute and incremental. Oriental Motor offers incremental types (Line Driver or Voltage (TTL equivalent)) as a standard product for our stepper motors. For an absolute encoder solution, use the AZ Series. For other standard product encoder offerings and motors that correct themselves, contact technical support  for assistance.

An incremental encoder provides the incremental change in position of the encoder to the counting electronics. Stepper motors with incremental encoders make it possible to monitor the present position and detect for errors. Position monitoring can be used to detect the position of the motor. For instance, to confirm normal operations, compare commanded position to the actual position.

3-Channel Encoders

Use the Index signal for the return-to-home operation. By using the Index signal, the return-to-home point will be detected with higher accuracy than single use of the return-to-home sensor. The index channel is an optional output channel which provides one pulse per revolution.

Line Driver Output Type

The Line Driver output offers excellent noise resistance because of the differential output and is capable of longer wiring distance compared to the voltage output.

Detecting for Errors

An incremental encoder works by providing an A and B pulse output. The counting is done through external electronics. Here, the encoder counter is compared to the commanded position counter (third party electronics). The point where the counting begins depends on the counter in the external electronics and not on the position of the encoder.

Stepper Motor Encoders

Voltage (TTL Equivalent) or Line Driver Type

R2E, R2F & R2EL, R2FL
200 or 400 p/rev
3 Channel
Compact & Space Saving
Oriental Motor Original

Encoder Specifications

Encoder Code

Voltage (TTL Equivalent)

Line Driver

R2E

R2F

R2EL

R2FL

Type

Incremental

Resolution

200 P/R

400 P/R

200 P/R

400 P/R

Output

A-phase, B-phase, Z-phase (3ch)

Input Current

45 mA or less

30 mA or less

Input Voltage

5 VDC ±10%

Output Type

Voltage (TTL equivalent)

Line Driver

Output Voltage

Low

0.5 VDC or less

High

4.3 VDC or more (with no load)

Response Frequency

100 kHz

Electromagnetic Brake Equipped Stepper Motors (1.8° or 0.9°)

  • 1.10 in. (28 mm)
  • 1.38 in. (35 mm)
  • 1.65 in. (42 mm)
  • 2.22 in. (56.4 mm)

Electromagnetic Brake Option

electromagentic brake stepper motor

These products have built-in power-off activated electromagnetic brakes. When power is accidentally cut off due to a blackout or other unexpected events, the electromagnetic brake holds the load in position to prevent it from dropping or moving. Also, when the motor is at standstill, it is held by the electromagnetic brake. It is possible to suppress the heat generated from the motor by turning off the motor current.

Product Name

PK22

PKP23 · PKP24

PKP26

Type

Power Off Activated Type

Power Supply Voltage

24 VDC ± 5%

Power Supply Current (A)

0.05

0.07

0.23

Static Friction Torque (N·m)

0.08

0.3

1.5

Brake Operating Time (ms)

20

Brake Release Time (ms)

50

Time Rating

Continuous

For product names, product name-identifying characters are used.

Stepper Motor Connection

Motor Connector

Stepper motor lead wire connector can be inserted*1 and the locking mechanism prevents accidental removal*2

stepper motor connection

Wiring Configuration Options

  • Bipolar - 4 lead wires

*1 Except for stepper motor frame size of 20 mm (0.79 in.)
*2 Only motor frame sizes of 35 mm (1.38 in.) 42 mm (1.65 in.), 56.4 mm (2.22 in.) and 60 mm (2.36 in.)



CVD 2-Phase Bipolar Drivers (sold separately)

CVD 2-Phase Bipolar Drivers

The CVD driver offers superior performance and value and is ideal for OEM or single axis machines. The CVD series stepper motor drivers offer:

  • Lowest Vibration and Noise with advanced Microstepping control
  • Significantly improves positional accuracy when microstepping
  • Highest torque with Bipolar configuration (4 lead wire)
  • Small, thin microstepping drive with space saving FETs
  • Selectable step angle and microstepping filter control
  • 2 mounting types and connector configuration
  • Alarms
  • 24 VDC Input / 0.5A to 4.5A

 

RBD 2-Phase Bipolar Drivers (sold separately)

The RBD bipolar stepper motor driver is a high current, high performance 2-phase bipolar driver with advance microstepping motor control and is ideal for OEM or single axis machines. The RBD is available as a driver only or part of a complete package. The RBD stepper motor drivers offer:

  • Advanced Microstepping Drive
  • 1.8° ~ 0.014° (up to 128 step Divide)
  • 20 ~ 75 VDC Input
  • 0.09 ~ 4.5 A
  • Easy mounting and connection

Flexible Couplings

This three-piece coupling adopts an aluminum alloy hub and a resin spider. The simple construction ensures that the high torque generated by a gear motor can be transmitted reliably. The proper elasticity of the spider suppresses motor vibration.

 

Mounting Brackets

mounting bracket

Mounting brackets are convenient for installation and securing a stepper motor or geared stepper motor.

 

Clean Dampers

damper

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)

 

Motor Cables

Motor Cable

This lead wire connection cable with a conveniently crimped connector is for connector-coupled motor, and for connecting motors and drivers.
The PKP2 motors include a 2 ft. (0.6 m) cable.


SCX11 Universal Controller

universal controller

The SCX11 is a highly-functional and sophisticated controller equipped with program editing and execution functions. Use the SCX11 as a stored program controller to connect to any of Oriental Motor's standard pulse input drivers. The SCX11 is also able to control the motor via serial communications such as USB, RS-232C and CANopen. Accepts encoder inputs.

System Configuration

Stepper Motor System


CAD / Manual Search

To locate product CAD and Operator Manuals please search using the product Item Number.

Downloads

Technical Articles

Reference

 


Order Literature

PKP 2-Phase, Bipolar Stepper Motors Brochure

 


Videos

CVD Series Bipolar Drivers

Stepper Motor Fundamentals

Stepper Motor Theory

2-Phase Drivers (sold separately)
Linear Motion Systems
Hollow Rotary Actuators

 

©2017 - ORIENTAL MOTOR USA CORP. - All Rights Reserved

Order Your FREE PKP 2-Phase Stepper Motor Brochure