Description

The SKF solution

Encoders are required where the speed and/ or direction of rotation of AC induction motors is to be continuously monitored.
Conventional encoders are typically mounted external to the motor, exposed to the environmental conditions, which often has a significant impact on encoder service life.
The SKF Motor Encoder Unit, however,combines encoder and bearing functions.These units, which can be installed at either bearing position in an AC induction motor,
are only 6,2 mm wider than the corresponding standard deep groove ball bearing.
A SKF Motor Encoder Unit produces 2 signals,at 90 degree phase shift each with resolution ranging from 32 to 80 digital pulses perrevolution, depending on the unit size.

Features

1）Bearing and sensors integrated into a single unit
2）Enables monitoring of speed and direction of the shaft
3） Accurately detects speeds from 0 to 13 000 r/min depending on limiting speed of bearing
4） Wide range of cable length and connectors available

High-performance filtering

All standard SKF Motor Encoder Units are protected with high-performance filtering,
so they can adapt to the electric environment typically found in industrial and automotive applications.

Typical diagram

Requirements for the receiving interface
The receiving interface must be able to process the signals, which are provided via open collector circuits.
A typical schematic drawing is shown in fig. 1

SKF motor encoder model table

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