Technical Specifications; Overload Capability Of The Inverter - Siemens Sinamics PM250 Hardware Installation Manual

Technical specifications

Power loss of the Power Modules
The power loss values specified are typical values. You will find further information on the
Internet at: Power loss data for partial load operation
(https://support.industry.siemens.com/cs/ww/en/view/94059311)
7.1

Overload capability of the inverter

Overload capability is the property of the inverter to temporarily supply a current that is
higher than the rated current to accelerate a load. Two typical load cycles are defined to
clearly demonstrate the overload capability: "Low Overload" and "High Overload"
Definitions
Base load
Constant load between the accelerating phases of the drive
Low Overload
• LO base load input current
Permissible input current for a "Low
Overload" load cycle
• LO base load output current
Permissible output current for a "Low
Overload" load cycle
• LO base load power
Rated power based on the LO base load
output current
If not specified otherwise, the power and current data in the technical data always refer to a
load cycle according to Low Overload.
We recommend the "SIZER" engineering software to select the inverter.
You will find additional information about SIZER on the Internet: Download SIZER
(http://support.automation.siemens.com/WW/view/en/10804987/130000).
PM250 Power Module
Hardware Installation Manual, 01/2016, A5E36265179B-AA
High Overload
• HO base load input current
Permissible input current for a "High
Overload" load cycle
• HO base load output current
Permissible output current for a "High
Overload" load cycle
• HO base load power
Rated power based on the HO base
load output current
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