Derating Of Motor Cable Length Based On Pulse Frequency And Surrounding Temperature; Low Frequency Operation - Siemens SINAMICS G115D Operating Instructions Manual

11.1.6.5 Derating of motor cable length based on pulse frequency and surrounding
temperature
The permissible motor cable length are dependent upon the particular cable type, the pulse
frequency that has been selected and the surrounding temperature.
G115D wall-mounted convert‐
er
Frame
size
Mains supply voltage @ 3 AC 400 V, 50 Hz
FSA
FSB
FSC
Mains supply voltage @ 3 AC 480 V, 50 Hz
FSA
FSB
FSC
11.2

Low frequency operation

The converter can only be operated with reduced output current at low output frequencies.
NOTICE
Reduced converter service life as a result of overheating
Loading the converter with a high output current and at the same time with a low output
frequency can cause the current-conducting components in the converter to overheat.
Excessively high temperatures can damage the converter or reduce the converter service life.
• Never operate the converter continuously with an output frequency = 0 Hz.
• Only operate the converter in the permissible operating range.
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
Rated power ≤4 kHz
40 °C to 55 °C
0.37 kW to 1.5 kW 15 (49.2)
2.2 kW to 4 kW
15 (49.2)
5.5 kW to 7.5 kW
0.37 kW to 1.5 kW 15 (49.2)
2.2 kW to 4 kW
5.5 kW to 7.5 kW 15 (49.2)
11.2 Low frequency operation
Maximum length of motor cable - m (ft)
6 kHz to 16 kHz
40 °C 45 °C
5 (16.4)
7 (23.0) 5 (16.4)
Technical data
48 °C 55 °C
3 (9.8)
3 (9.8)
421