KEB COMBIVERT F5 BASIC Applications Manual page 255

Encoder Interface
Cable length
© KEB Antriebstechnik, 2002
All rights reserved
6.10.5.a Input signals
TTL-voltage differential levels according
A
A
B
B
N
N
The two, by 90° electrical out of phase signals, A and B as well as their inverted
signals are generally evaluated. The zero track is needed for the reference point
approach in the positioning module (F5-M/S). Zero track (also reference marking
channel) gives out 1 signal per revolution.
To achieve an unobjectionable function following cable lengths should not be exceeded.
Precondition for it is that the supply voltage at the rotary encoder is within the specified
tolerances.
The encoder lines should not be longer than 50 m. If longer cables are needed, please
contact KEB.
Further information can be taken from the documentation of the respective
manufacturer.
Name: Basis
KEB COMBIVERT F5
Functional Description
to TIA/EIA-RS422-B
0° 90° 360°
Date
28.01.02
Chapter Section Page
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