Heidenhain 1387 Encoder

Precision Feedback Device for Elevator Motor Control Systems

Product Overview

The Heidenhain 1387 Encoder is a position and speed feedback device used in elevator drive systems. It is typically installed on the motor or traction machine to provide real-time movement data to the control system.

In practical use, accurate feedback is essential for maintaining smooth elevator motion. In projects across Germany and Brazil, encoders like the 1387 model are commonly used in systems where precise speed control and stable leveling performance are required.

Rather than acting as a driving component, the encoder works in the background, continuously sending position signals that allow the controller to adjust motor behavior.

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Role in Elevator Control

The encoder plays a key role in the closed-loop control system.

Its main functions include:

• detecting motor rotation speed
• providing position feedback
• supporting accurate leveling at floor stops
• improving overall motion control stability

Without reliable feedback, even a high-quality inverter or motor cannot achieve smooth operation.

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System Integration

The Heidenhain encoder typically works together with:

• inverter (VVVF drive)
• traction motor
• control board
• braking system

It forms part of the feedback loop that allows the system to respond dynamically to load and movement changes.

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Application Context

Encoders of this type are commonly used in:

• passenger elevators
• high-rise buildings
• modernization projects
• systems requiring precise speed regulation

In European markets such as Germany, feedback components are often selected with a strong focus on accuracy and long-term stability.

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Performance Characteristics

In practical operation, a well-functioning encoder contributes to:

• smoother acceleration and deceleration
• accurate stopping at floor level
• reduced vibration during movement
• improved system response

These effects are often noticeable in daily elevator use.

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Maintenance and Replacement

Technicians may inspect or replace the encoder when:

• elevator leveling becomes inaccurate
• speed control appears unstable
• system shows feedback-related faults
• signal loss or irregular readings occur

In many cases, encoder issues can affect overall system performance even if other components are functioning normally.

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Frequently Asked Questions

What is a Heidenhain 1387 encoder used for?
It is used to provide position and speed feedback in elevator motor control systems.

Is the encoder critical for elevator performance?
Yes, it plays a key role in ensuring smooth movement and accurate stopping.

Where is it installed?
It is typically mounted on the motor or traction machine.