Siemens SINAMICS S110 Manual page 205

Maximum encoder cable lengths
Table 8- 22
Encoder type
TTL
HTL unipolar
HTL bipolar
SSI
For TTL encoders at X520 → remote sense → 100 m
1)
Because the physical transmission media is more robust, the bipolar connection should always be
2)
used. The unipolar connection should only be used if the encoder type does not output push-pull
signals.
See the diagram "Maximum cable length depending on the SSI baud rate for SSI encoders"
3)
SSI encoder
Figure 8-18
SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
Supplementary system components and encoder system integration
Maximum encoder cable length
1)
2)
Maximum cable lengths depending on the SSI baud rate for SSI encoders
8.4 Sensor Module Cabinet-Mounted SMC30
Maximum encoder cable length in m
100
100
300
100
3)
205