Siemens SINAMICS G120X - Operation with a Sine-Wave Filter

2 General conditions of operation
G120X commissioning guide for permanent magnet motors PMSM
Entry-ID: 109780815, V1.0, 07/2020
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© Siemens AG
2020 All rights reserved
2.8 Operation with a sine-wave filter
Currently only G120X FSA-G support sine-wave filters.
Basically a sine-wave filter with a PMSM motor can be used however the operation with long
cables may lead to instability and without making a customer specific test the operation cannot
be guaranteed.
Table 2-3
Important sine wave filter application notes
Always activate the sine-wave filter option in the Startup menu to protect the filter from
possible damage. Advanced Startup → Hardware Options → Output filter. Enter filter
inductance and capacitance.
Ensure p1901[1] is set at default (0).
Set p1980 = 10 and perform Save RAM to ROM.
4
If using a 3rd party sine-wave filter check for suitability regarding maximum operating
frequency, minimum pulse frequency and current rating.
Consider the volt-drop due to the filter impedance (usually 10-15%) and the naturally lower
drive output voltage due to inhibition of Pulse Edge Modulation (approx. 0.92* Drive input
voltage). This can result in a significant derating.
Enter motor inductances Ld, Lq manually. Before performing the stationary ID run set
p1909[15] = 1.
4
Ensure rotor is unloaded before every start. Repeat after every motor ID run.