Restrictions For Special Ambient Conditions - Siemens SINAMICS G120 Hardware Installation Manual

7.6

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 7-1
• 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.
PM250 Power Module
Hardware Installation Manual, 04/2021, A5E36265179B-AB
Permissible operating range of the converter
Technical specifications
7.6 Restrictions for special ambient conditions
61