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94

Interface electronics

Interface electronics from HEIDENHAIN

adapt the encoder signals to the interface

of the subsequent electronics. They are

used when the subsequent electronics

cannot directly process the output signals

from HEIDENHAIN encoders, or if addition-

al interpolation of the signals is necessary.

Box design

Plug design

Version for integration

Bench-top design

Top-hat rail design

Input signals of the interface electronics

Interface electronics from HEIDENHAIN

can be connected to encoders with

sinusoidal signals of 1 V

PP

(voltage signals)

or 11 μA

PP

(current signals). Encoders with

the serial interfaces EnDat or SSI can also

be connected to various interface

electronics.

Output signals of the interface

electronics

Interface electronics with the following

interfaces to the subsequent electronics

are available:

• TTL square-wave pulse trains

• EnDat 2.2

• DRIVE-CLiQ

• Fanuc serial interface

• Mitsubishi high speed interface

• Yaskawa serial interface

• PCI bus

• Ethernet

• Proﬁ bus

Interpolation of the sinusoidal input

signals

In addition to being converted, the

sinusoidal encoder signals are also

interpolated in the interface electronics.

This permits ﬁ ner measuring steps and, as

a result, higher control quality and better

positioning behavior.

Formation of a position value

Some interface electronics have an

integrated counting function. Starting from

the last reference point set, an absolute

position value is formed when the

reference mark is traversed, and is

transferred to the subsequent electronics.

Measured value memory

Interface electronics with integrated

measured value memory can buffer

measured values:

IK 220: Total of 8 192 measured values

EIB 74x: Per input typically 250 000

measured values

You can ﬁ nd more detailed information in

the Interface Electronics Product Overview

and the respective product information

documents.

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