Siemens SINAMICS G120C DP

Maximum current at low speeds
NOTICE
Negative impact on the 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 have a negative impact on the
converter service life.
• Never operate the converter continuously with an output frequency = 0Hz.
• Only operate the converter in the permissible operating range.
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Figure11-4 Permissible operating range of the converter
• Continuous operation:
Operating state that is permissible for the complete operating time.
• Short-time duty:
Operating state that is permissible for less than 2% of the operating time.
• Sporadic short-time duty:
Operating state that is permissible for less than 1% of the operating time.
Derating as a function of the ambient temperature
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Figure11-5 Permissible output current as a function of the ambient temperature, FSAA…FSC
Technical data
11.8Restrictions for special ambient conditions
SINAMICS G120C Converters
434 Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK