Siemens SINAMICS S120 Manual page 339

Note
Incorrect temperature measured values as a result of cables with an excessively high
resistance
An excessively long cable length or an excessively small cable cross-section can falsify the
temperature measurement (for a PT100, 10 Ω cable resistance can falsify the measurement
result by 10%). As a consequence, excessively high measured values are output, which
could lead to the motor being unnecessarily tripped prematurely.
• Use only cable lengths ≤ 300 m.
• For cable lengths >100 m, use cables with a cross-section of ≥1 mm
• Align the cable resistances (software function in the TM150).
Protective conductor connection and shield support
The following diagram shows a typical Weidmüller shield connection clamp for the shield
supports.
①
②
Figure 9-7
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
Protective conductor connection M4/1.8 Nm
Shield connection terminal, Weidmüller company, type: KLBÜ CO1, order number:
1753311001
Shield support and protective conductor connection of the TM150
9.6 G51 to G54, temperature sensor module TM150
Options
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