Siemens SINAMICS PM240-2 - Restrictions for Special Ambient Conditions

Technical data
7.8 Restrictions for special ambient conditions
Power Module PM240-2
Hardware Installation Manual, 01/2017, A5E33294624B AE
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7.8
Restrictions for special ambient conditions
Maximum current at low speeds
NOTICE
Negative impact on the inverter service life as a result of overheating.
Loading the inverter with a high output current and at the same time with a low output
frequency can cause the current-conducting components in the inverter to overheat.
Excessively high temperatures can damage the inverter or have a negative impact on the
inverter service life.
• Never operate the inverter continuously with an output frequency = 0 Hz.
• Only operate the inverter in the permissible operating range.
Figure 7-2 Permissible operating range of the inverter
● 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.