Encoder systems

Whether built-in encoders or add-on encoders – with our systems, your motors will respond accurately to commands from the drive electronics. Speed control and positioning are not the only reasons why you should use our encoders.

Easily implement positioning tasks

Encoder systems
Various encoder types for your plant
Various encoder types for your plant

The optimum interaction between the individual system components is particularly important in applications with positioning tasks. Motors have to accurately respond to commands from the drive electronics. We can supply you with the necessary encoder systems.

These systems detect the actual position and feed back the speed into the drive electronics. If you are using drives with absolute value information, this saves you time during initialisation of the plant.

Our large selection of encoders allows you to control and position your plant according to your requirements:

  • Incremental encoders with the conventional signal levels TTL (Transistor-Transistor Logic) and HTL (High Threshold Logic)
  • Incremental rotary encoders with sin/cos tracks
  • Absolute encoders with RS485 and sin/cos tracks
  • Absolute encoders with SSI (Synchronous Serial Interface), single-turn encoders and multi-turn encoders
  • Built-in encoders

Get in touch with us.

  • Our experts know your industry and its requirements.
  • Our global network ensures we are close wherever and whenever you need us.
  • We have the know-how and tools to provide optimum advice and support.

Your benefits

  • No additional length on the motor

    because the built-in encoders are placed between the end shield and the fan so that the encoder has a compact profile when attached.
  • Outstanding versatility

    thanks to standardised signals for incremental encoders as well as single-turn and multi-turn encoders.
  • Extremely easy startup

    because encoders with an “integrated nameplate” make startup with our frequency inverters a snap.

Add-on encoder

Features

The encoder designs in motors of DR.. series have been developed to fulfill requirements with a structural design that is fully integrated and as compact as possible.

Close table
For motor size Structural design
DR..71 – 132 Mounted using spread shafts
DR..160 – 280 Mounted using plug-in shafts
DR..315 Mounted using a hollow shaft
DR..71 – 280 Mounted using a coupling and solid shaft
We have stored a table for you here.

Incremental encoders, type ES7., EG7., EH7, EV7.

Incremental encoders are suitable for speed control and positioning. They have two signal tracks and a zero pulse track with the negated signal. The incremental encoders are designed as spread-shaft encoders (ES7.), plug-in shaft encoders with end thread (EG7.), hollow shaft encoders (EH7.) or solid shaft encoders with a coupling (EV7.). Signal output: TTL, HTL or sin/cos.

Absolute encoders, type A..Y / A..H / A..W

The A..Y, A..H and A..W absolute encoders are combination encoders. They contain a multi-turn absolute encoder and a high-resolution sine encoder. You can choose between an SSI or an asynchronous-serial interface for transmission of absolute value data. Further, the A..H and AS7W absolute encoders are equipped with an electronic nameplate.

Connection alternatives

The encoders of types /ES7, /EG7, /EV7, /AS7, /AG7 and /AV7 can be supplied in three connection variants:

  • With connection cover
  • With connection cover, 0.3 m cable length and M23 connector
  • Without connection cover

We recommend that you use prefabricated cables. Our prefabricated cables allow you to use the encoders without a connection cover, since this cover is already part of the cable.


Technical data

Overview of the incremental encoders

sin/cos electrical interface with 1 VSS

Close table
Designation Suitable motor size Encoder type Mounting type Specification: periods/
revolution
Supply voltage
V
ES7S 71 – 132 Add-on encoder Shaft-centered 1 024 DC 7 – 30
EG7S 160 – 280
EH7S 315 Hollow shaft DC 10 – 30
EV7S 71 – 280 Coupling DC 7 – 30
We have stored a table for you here.

Electrical interface HTL (push-pull)

Close table
Designation Suitable motor size Encoder type Mounting type Specification: periods/
revolution
Supply voltage
V
ES7C 71 – 132 Add-on encoder Shaft-centered 1 024 DC 4.75 – 30
EG7C 160 – 280
EH7C 315 Hollow shaft DC 10 – 30
EV7C 71 – 280 Coupling DC 4.75 – 30
We have stored a table for you here.

Electrical interface TTL (RS422)

Close table
Designation Suitable motor size Encoder type Mounting type Specification: periods/
revolution
Supply voltage
V
ES7R 71 – 132 Add-on encoder Shaft-centered 1 024 DC 7 – 30
EG7R 160 – 280
ES7C1) 71 – 132 DC 4.75 – 5.25
EG7C1) 160 – 280
EH7R 315 Hollow shaft DC 10 – 30
EH7T 315 DC 5
EV7R 71 – 280 Coupling DC 7 – 30
We have stored a table for you here.

Overview of absolute encoders

Electrical interface RS485 (multi-turn) + sin/cos with 1 VSS

Close table
Designation Suitable motor size Encoder type Mounting type Specification: periods/
revolution
Supply voltage
V
AS7W 71 – 132 Absolute encoder
(multi-turn)
Shaft-centered 2048 DC 7 – 30
AG7W 160 – 280
AV7W 71 – 280 Coupling
We have stored a table for you here.

Electrical interface SSI (multi-turn) + sin/cos with 1 VSS

Close table
Designation Suitable motor size Encoder type Mounting type Specification: periods/
revolution
Supply voltage
V
AS7Y 71 – 132 Absolute encoder
SSI
(multi-turn)
Shaft-centered 2048 DC 7 – 30
AG7Y 160 – 280
AV7Y 71 – 280 Coupling
We have stored a table for you here.

Electrical interface SSI (multi-turn) + TTL (RS422)

Close table
Designation Suitable motor size Encoder type Mounting type Specification: periods/
revolution
Supply voltage
V
AH7Y 315 Absolute encoder
SSI
(multi-turn)
Hollow shaft 2048 DC 9 – 30
We have stored a table for you here.

Functional safety

Functional safety: Encoder systems

FS safety-rated encoders up to PL d according to EN ISO 13849-1

Encoder types:

  • AS7W / AG7W
  • AS7Y / AG7Y
  • ES7S / EG7S

Built-in encoders

Features

Built-in encoders

The built-in encoders for motors of the DR.. series are one of a kind: instead of an add-on encoder on the fan guard on the B-side, an encoder can be placed between the end shield and the fan. This means that encoder mounting does not add additional length to the motor.

For example, if you use a MOVITRAC® standard inverter with the “Simple positioning” application module, you can successfully implement applications that would have previously required rapid/creep speed switching with initiator evaluation.

Technical data

Close table
Built-in encoders EI7C, EI76, EI72, EI71
Signal type HTL (push-pull)
Supply voltage DC 9 – 30V
Periods per revolution A; B EI7C: 24
EI76: 6
EI72: 2
EI71: 1
DR.. motor sizes 71 – 132
Connection Terminal strip in terminal box
8-pin M12 plug connector
4-pin M12 plug connector
We have stored a table for you here.

Functional safety

Functional safety: Encoder systems

The EI7C FS encoder types offers the following safety functions:

Close table
Motor type Encoder type Safety category Safety function
DR..71 – DR..132 EI7C FS SIL2 according to EN 61800-5-2 Up to PL d according to EN ISO 13849-1 SLS, SDI, SS1, SS2
We have stored a table for you here.
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