Stepper Motor With Encoder for Space Saving in Medical Inspection Equipment

Industries Medical, biochemical analysis, biotechnology
Process and Equipment Name Medical inspection equipment
Issue Space saving, reduction in wiring work time, reduction in man-hours

Issue: To Space Saving by Reducing External Encoders

Conventional Problems

  • There is a need to develop a new, smaller model of medical inspection equipment
  • External encoders are installed for position control of each drive shaft, so it is necessary to reserve space for these encoders
  • Man-hours required to assemble and inspect external encoders, as well as parts management work time

Solution: Stepper Motor With Encoder Achieves Space Saving

Space saving of equipment is one of the most important issues in the development of medical inspection equipment. However, conventional models use external encoders on many drive axes to monitor the current position and detect misalignment, which hinders space saving.

2-phase/5-phase stepper motor PKP Series with encoder can be used to realize space saving in medical inspection equipment.

To Reduce the External Encoder by Replacing With a Motor With an Encoder

In the past, external encoders were mounted on the mechanism side, but this is no longer necessary and space saving mounting can be realized. In addition, the number of parts required for each axis is also reduced, which reduces man-hours and costs required for encoder installation during mass production.

Concept Image of Space Savings by Replacing With a Motor With an Encoder 

Diagram of equipment with 2-axis vertical configuration, visualizing the internal structure. The main drive unit is highlighted.
When Encoders are Installed on Each Axis, Space is Needed Not Only for Installation but Also for Escape to Avoid Interference With Other Mechanisms
Inside the equipment with vertical 2-axis, structural diagram of the space saving, in which the number of drive units has been reduced by replacing them with motors with encoders. Driving parts are highlighted in green.
Space Saving and Man-Hours by Having the Encoder on the Motor Side

Compact Encoder Equipped

The Encoder equipped in the 2-phase/5-phase stepper motor PKP Series with encoder is characterized by its high performance and compactness. The encoder of this product boasts high resolution and high angular accuracy, contributing to improved reliability of analysis results. Moreover, for a stepper motor with a frame size of 56.4 mm, the encoder is designed to be extremely compact, measuring only 16.5 mm × 20 mm.

Dimensional drawing attached to the motor. Protrusion 16.5 mm, height 20 mm or less.

When the frame size is 56.4 mm

  • *The orange area in the dimensions diagram is the encoder section.
  • *A convenient cable for wiring the encoder is sold separately.

PKP Series With Encoder Product Line

Number of Phases Type Frame Size [mm] Encoder Resolution Output Signals Encoder Output Circuit Type
2-phase Standard type □ 20~□ 56.4 200 P/R, 400 P/R, 1000 P/R* A-phase, B-phase, Z-phase (3 channels) Voltage output
Line driver output
High-resolution type □ 28~□ 56.4 400 P/R A-phase, B-phase, Z-phase (3 channels) Voltage output
Line driver output
SH geared type □ 28~□ 60 400 P/R A-phase, B-phase, Z-phase (3 channels) Voltage output
Line driver output
5-phase Standard type □ 20~□ 60 500 P/R, 1000 P/R* A-phase, B-phase, Z-phase (3 channels) Voltage output
Line driver output
  • *Frame size 42 mm and 56.4 mm only

Product Proposal: 2-Phase/5-Phase Stepper Motor PKP Series With Encoder

Compact motor with encoder. Space saving design enables highly accurate position control.

Combinable Drivers

  • CVD Series Pulse Input Type/RS-485 Communication Type
  • CVD Series S Type
  • Drivers For 2-Phase/5-Phase Stepper Motor, CVD Series, Multi-Axis Type, EtherCAT Compatible

In addition to product inquiries, please contact us about any issues you may have, or to request materials and samples.

Technical Guide Handbook on Stepper Motor to Support Equipment Development is Now Available

For those who handle motors for mass production equipment. This book contains technical explanations of torque characteristics, vibration/heat generation measures, etc., as well as customize information on our product lineup, advantages of using the equipment, and more. This is an essential resource for equipment research, development, and design.

  • User registration and login are required for downloading. Please contact us for the printed version.