Ttl/Htl Incremental Encoder - Siemens SINAMICS S120 Commissioning Manual
With startdrive
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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Appendix
A.6 Overview of measuring systems / encoders
A.6.3
TTL/HTL incremental encoder
Description
These encoders operate analogously to the SIN/COS incremental encoders, although they
supply a different output level. They are also referred to as pulse or square-wave encoders.
● HTL (High Threshold Logic); encoders with HTL interfaces are designed for applications
with digital inputs with 24 V levels.
● RS 422 differential signals (TTL = Transistor Transistor Logic).
● The resolution can be improved by a factor of four for TTL and HTL encoders through
edge evaluation.
● TTL/HTL encoders are offered in the Startdrive with and without SSI protocol.
Note
Using the SSI protocol
Information on the SSI protocol can be found in Chapter "SSI encoder (Page 423)".
416
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
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