Siemens PM240-2

Technical data
7.6 Restrictions for special ambient conditions
Power Module PM240-2
92 Hardware Installation Manual, 12/2015, A5E33294624B AD
7.6
Restrictions for special ambient conditions
Maximum current at low speeds
At low speeds, the inverter can only briefly supply the base load output current. It is
especially important to note that 0 Hz operation is not continuously permissible.
The operating conditions shown in the following diagram are possible without having a
negative impact on the inverter service life.
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.
Current de-rating depending on the ambient operating temperature
The Control Unit and operator panel can restrict the maximum permissible operating ambient
temperature of the Power Module.