Parameter list
7.2 Parameter list
SINAMICS V20 Inverter
Operating Instructions, 07/2012, A5E03728167
137
Parameter Function Range Factory
default
Can be
changed
Scaling Data
set
Data
type
Acc.
Level
P1345[0...2] Imax voltage ctrl. prop. gain x x x
P1346[0...2] Imax voltage ctrl. integral time x x x
P2002[0...2] Reference current x
P2003[0...2] Reference torque x
P2185[0...2] Upper torque threshold 1 x
P2187[0...2] Upper torque threshold 2 x
P2189[0...2] Upper torque threshold 3 x
0 No calculation
1 Complete parameterization
2 Calculation of equivalent circuit data
3 Calculation of V/f control data
4 Calculation of controller settings only
Note: This parameter is required during commissioning to optimize inverter performance. If there is a large
mismatch in Power ratings of Inverter to Motor it is possible that r0384 and r0386 may not be calculated
correctly. In these cases use P1900.
When transferring P0340, the inverter uses its processor to carry out internal calculations.
Communications to the inverter may be interrupted.
The faults can be acknowledged as soon as the calculations have been completed in the inverter. These
calculations can take approximately 10s to complete.
P0341[0...2] Motor inertia [kg*m^2] 0.0001 -
1000.0
0.0018 U, T - DDS Float 3
Sets no-load inertia of motor.
Together with P0342 (inertia ratio total / motor) and P1496 (scaling factor acceleration), this value
produces the acceleration torque (r1518), which can be added to any additional torque produced from a
BICO source (P1511), and incorporated in the torque control function.
Dependency: This parameter is influenced by automatic calculations defined by P0340.
Note: The result of P0341 * P0342 is included in the speed controller calculation.
P0341 * P0342 = total motor inertia
P1496 = 100 % activates acceleration pre-control for the speed controller and calculates the torque from
P0341 and P0342.
P0342[0...2] Total / motor inertia ratio 1.000 -
400.00
1.000 U, T - DDS Float 3
Specifies ratio between total inertia (load + motor) and motor inertia.
Dependency: See P0341
P0344[0...2] Motor weight [kg] 1.0 -
6500.0
9.4 U, T - DDS Float 3
Specifies motor weight [kg].
Dependency: See P0341
Note: This value is used in the motor thermal model. It is normally calculated automatically from P0340 (motor
parameters) but can also be entered manually. Default value is depending on inverter type and its rating
data.
r0345[0...2] Motor start-up time [s] - - - - DDS Float 3
Displays motor start-up time. This time corresponds to the standardized motor inertia. The start-up time is
the time taken to reach rated motor speed from standstill at acceleration with rated motor torque (r0333).
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