Encoder system connection
10.3 Sensor Module External SME20
SINAMICS S120 Combi
Manual, 11/2017, 6SL3097-4AV00-0BP7
255
The maximum cable length at the encoder system interface depends on the current
consumption of the encoder system and the cross-section of the supply cores in the cable.
However, the maximum length is 30 m.
For encoder systems that operate in a supply voltage range from 4.75 V to 5.25 V, the
following diagram is obtained. The sample parameters shown are 0.28 mm² cross-section
(0.14 mm² supply cores plus 0.14 mm² remote sense conductors) and 0.64 mm² (0.5 mm²
supply conductors plus 0.14 mm² remote sense conductors).
Figure 10-17 Max. cable length depending on the current drawn by the encoder system
In addition to the encoder systems for a supply voltage range of 4.75 V to 5.25 V in the
diagram above, encoder systems are also available for an extended range down to 3.6 V.
These can be generally operated using encoder system cables up to 30 m long provided that
the total cross-section of the supply core plus Remote Sense cores does not fall below
0.14 mm².
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