Siemens SINAMICS G120, Installation Manual

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Technical data
6.7 Restrictions for special ambient conditions
Power Module PM240-2
Hardware Installation Manual, 01/2020, A5E33294624B AL
105
6.7 Restrictions for special ambient conditions
Maximum current at low speeds
NOTICE
Overheating the converter due to unsuitable load
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.
Figure 6-2 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.