Technical Data, Power Modules - Siemens SINAMICS G120 Operating Instructions Manual

Technical data

10.2 Technical data, Power Modules

10.2 Technical data, Power Modules
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"
Table 10- 1
The "Low Overload" load cycle assumes a uni-
form base load with low requirements placed on
brief accelerating p phases. Typical applications
when designing according to "Low Overload"
include:
•
•
•
•
•
•
Definitions
● Base load
Constant load between the accelerating phases of the drive
•
•
•
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 at: Download SIZER
(http://support.automation.siemens.com/WW/view/en/10804987/130000).
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Load cycles and typical applications:
"Low Overload" load cycle
Pumps, fans and compressors
Wet or dry blasting technology
Mills, mixers, kneaders, crushers, agitators
Basic spindles
Rotary kilns
Extruders
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 Over-
load" load cycle
LO base load power
Rated power based on the LO base load out-
put current
"High Overload" load cycle
The "High Overload" load cycle permits, for re-
duced base load, dynamic accelerating phases.
Typical applications when designing according to
"High Overload" include:
Horizontal and vertical conveyor technology
•
(conveyor belts, roller conveyors, chain con-
veyors)
Centrifuges
•
Escalators/moving stairways
•
Lifters/Lowerers
•
Elevators
•
Gantry cranes
•
Cable railways
•
Storage and retrieval machines
•
HO base load input current
•
Permissible input current for a "High Over-
load" load cycle
HO base load output current
•
Permissible output current for a "High Over-
load" load cycle
HO base load power
•
Rated power based on the HO base load out-
put current
Converter with CU230P-2 Control Units
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB
High Overload