Commissioning
5.6 Function commissioning
SINAMICS V20 Inverter
80 Operating Instructions, 07/2012, A5E03728167
Setting parameters
You only have to change the factory default settings of the Imax controller if the inverter
tends to oscillate when it reaches the current limit or it is shut down due to overcurrent.
Parameter Function Setting
P0305[0...2] Rated motor current [A] This parameter defines the nominal motor current from rating
plate.
P0640[0...2] Motor overload factor [%] This parameter defines motor overload current limit relative to
P0305 (rated motor current).
P1340[0...2] Imax controller proportional gain This parameter defines the proportional gain of the Imax
controller.
Range: 0.000 ... 0.499 (factory default: 0.030)
P1341[0...2] Imax controller integral time [s] This parameter defines the integral time constant of the Imax
controller. Setting P1341 to 0 disables the Imax controller.
Range: 0.000 ... 50.000 (factory default: 0.300)
P1345[0...2] Imax voltage controller proportional
gain
This parameter sets the proportional gain of Imax voltage
controller. If the output current (r0068) exceeds the maximum
current (r0067), the inverter is dynamically controlled by
reducing the output voltage.
Range: 0.000 ... 5.499 (factory default: 0.250)
P1346[0...2] Imax voltage controller integral time
[s]
This parameter defines the integral time constant of the Imax
voltage controller.
Range: 0.000 ... 50.000 (factory default: 0.300)
r0056.13 Status of motor control: Imax controller active
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