MP Scale

MP SCALE is a non-physical contact, ultra-precision position detector used for detecting linear or angular position utilizing the inductive coupling principle. The manufacture and sale of MP Scale was started with the technical cooperation of INDUCTOSYN Co. in U.S. since 1970.

MP Scale detects the amount of movement of a machine and outputs an analog signal. This signal is converted into a digital signal by an A/D converter and fed back to the NC system. Thus the machine can be controlled accurately by the fully closed-loop NC system based on the position feedback data from MP SCALE.

The control method which detects the last position (or angle) of the machine with the use of MP Scale detectors, and return detected data to NC equipment in order to move the machine to the target position (or angle).

These products are commonly called INDUCTOSYN scales and INDUCTOSYN rotary encoders.

MP Scale Overview

MP Scale provides machines with stable and highly accurate position detection!

Position Detection by Inductive Coupling

Stable position detection unaffected by dust, oil and condensation.

Contactless Position Detection

Long-term stable position detection without wear or deterioration over time.

Same Thermal Expansion as the Machine

High accurate position detection unaffected by temperature changes during machining.

MP Scale Types

Rotary

Angle detection for lathes and machining centers.

Linear

Linear position detection for various machine tools.

Linear・Tape

Linear position detection of fast moving FA equipment.

History

MP Scale detectors are precision rotary and linear encoders produced starting in 1970 by Nidec Machine Tool (then: Mitsubishi Heavy Industries) through a technical partnership with Inductosyn Co. in USA.

Features

Inductive Coupling Position Detection

MP Scale detectors utilize position detection by inductive coupling.

Versus Optical Position Detection

Optical position detection runs the risk of position detection error due to dirt and dust (Shading object).

Versus Magnetic Position Detection

Magnetic position detection runs the risk of position detection errors due to metal chips (Magnetic materials).

Contactless Position Detection

MP Scale detectors utilize contactless operation providing long-term stable position detection without wear or deterioration over time.

Versus Covered Type Scales

The problem with covered type scales: It is necessary to prevent the intrusion of dust with air purge (compressed air). Maintenance is required against deterioration of bearings and springs, and wear of lip seals.

Same Thermal Expansion as a Machine

Raw material of the scale is the same steel material as the machine.

⇒ Scale and machine have the same thermal expansion ≒ 11.0✕10-6K(m)

With MP Scale detectors, temperature changes during machining do not affect machining accuracy.

For more information on MP Scale, please visit the official Nidec Japan page:
Nidec Japan Precision Position Feedback Detector (MP Scale)