Siemens SINAMICS V20 Operating Instructions Manual page 163

Parameter Function
Selects inverter application.
The inverter and motor requirements are determined by the speed range and torque requirements of the
load. The relationship between speed and torque for different loads (high overloads or low overloads) is
shown in the following figure:
High overload (HO):
•
HO mode is used if the application needs a high overload on the whole frequency range. Many loads
can be considered to be high overloads. Typical high overloads are conveyors, compressors and posi-
tive displacement pumps.
Low overload (LO):
•
LO mode is used if the application has a parabolic frequency/torque characteristic like many fans and
pumps. Low overload offers the following possibilities with the same inverter:
– Higher rated inverter current r0207
– Higher rated inverter power r0206
– Higher threshold for I2t protection
If P0205 is modified in quick commissioning it immediately calculates various motor parameters:
– P0305 Rated motor current
– P0307 Rated motor power
– P0640 Motor overload factor
It is recommended to modify P0205 first. Afterwards motor parameter may be adapted.
Motor parameter will be overridden by changing this sequence.
Values: 0
1
SINAMICS V20 Inverter
Operating Instructions, 09/2014, A5E34559884
Range Factory
default
High overload
Low overload
Can be Scaling
changed
Parameter list
7.2 Parameter list
Data Data Acc.
set type Level
163