Installation altitude above sea
level in m
Air pressure in hPa Reduction factor
4000 606 0.775
5000 533 0.656
6000 469 0.588
Table 2-5 Typical DC link voltage of the SINAMICS converters
Network Infeed DC link voltage in V
230 V 1 AC unregulated/SLM/BLM 248
240 V 3 AC unregulated/SLM/BLM 307
400 V 3 AC unregulated/SLM/BLM 528
480 V 3 AC unregulated/SLM/BLM 634
400 V 3 AC ALM 600
480 V 3 AC ALM 720
Calculation example:
• given:
– Motor 1F☐2☐☐-☐☐F☐☐...
– Installation altitude: 3000 m above sea level: 0.877
– Max. permissible DC link voltage according to the table "Limit values for DC link
voltages...": 720 V
• Calculate the permissible DC link voltage as follows: 0.877 • 720 V = 631 V
• Determine the intended line voltage + converter for 400 V 3 AC with non-stabilized infeed or
SLM according to the table "Typical DC link voltages...": DC link voltage 528 V
Note
Observe the specications for the installation altitude of the converter
Observe the specications for the installation altitude of the converter used. The information
can be found in the manuals of the respective product.
As the DC link voltage is reduced, the converter output voltage also decreases. This reduces the
operating range in the M-n diagram.
The M-n diagrams are contained in the associated Conguration Manual.
Description of the motors
2.2 Technical characteristics and ambient conditions
SIMOTICS S-1FK2 synchronous motors for SINAMICS S120
Operating Instructions, 02/2022, A5E46089564B AD 29
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