Lenze 8400 TopLine - Manual (Page 339)

Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
339
6 Encoder/feedback system
6.3 Multi-Encoder (X8)
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How to parameterise the SSI encoder:
1. Set the supply voltage ( C00421 ) of the used SSI encoder.
In case of a higher supply power of encoders, e.g. with laser-based length measuring
systems, an external supply of the encoders must be provided.
2. As encoder type ( C00422 ), select "4: Absolute value encoder (SSI)".
3. Set the bit rate ( C00427 ) for SSI communication.
• For SSI protocols, the permissible baud rate is reduced if the cable length is increased. A
safe bit rate must be set, depending on the length of the used encoder cable and the
electromagnetic interference level.
4. Set the partitioning of the SSI data word in C00426/1...5 according to the used SSI encoder
(see Configuration example 1 ).
5. If an SSI encoder with Gray coding is used:
Select "1: Gray code" in C00428 to convert from Gray to binary.
• In the Lenze setting "0: Binary code", no conversion takes place, i.e. an SSI encoder with
binary coding is expected.
6. If a linear SSI encoder is used instead of a rotative encoder or the encoder value is to be
interpreted with or without sign:
Set the corresponding standard in C01110 .  Scaling of position value