Siemens SINAMICS V20 Operating Instructions Manual page 259

Parameter Function
r1343 CO: Imax controller
frequency output [Hz]
Displays effective frequency limitation.
Dependency: If I_max controller not in operation, parameter normally shows maximum frequency P1082.
r1344 CO: Imax controller
voltage output [V]
Displays amount by which the I_max controller is reducing the inverter output voltage.
P1345[0...2] Imax voltage controller
proportional gain
If the output current (r0068) exceeds the maximum current (r0067), the inverter is dynamically controlled by
reducing the output voltage. This parameter sets the proportional gain of this controller.
Dependency: This parameter is influenced by automatic calculations defined by P0340.
Note: See P1340 for further information. The Factory setting depends on inverter power.
P1346[0...2] Imax voltage controller
integral time [s]
Integral time constant of the I_max voltage controller.
P1341 = 0: I_max controller disabled
•
P1345 = 0 and P1346 > 0: I_max voltage controller enhanced integral
•
P1345 > 0 and P1346 > 0: I_max voltage controller normal PI control
•
Dependency: This parameter is influenced by automatic calculations defined by P0340.
Note: See P1340 for further information. The Factory setting depends on inverter power.
r1348 Economy mode factor
[%]
Displays the calculated economy mode factor (range 80%-120%) applied to the demanded output volts.
Economy mode is used to find the most efficient operating point for a given load. It does this by a continu-
ous method of hill climbing optimization. Hill climbing optimization works by slightly changing the output
volts either up or down and monitoring the change in input power. If the input power has decreased, the
algorithm changes the output volts in the same direction. If the input power has increased then the algo-
rithm adjusts the output volts in the other direction. Using this algorithm, the software should be able to find
the minimum point on the graph between input power and output volts.
Notice: If this value is too low, the system may become unstable.
P1350[0...2] Voltage soft start
Sets whether voltage is built up smoothly during magnetization time (ON) or whether it simply jumps to
boost voltage (OFF).
0
1
Note: The settings for this parameter bring benefits and drawbacks:
P1350 = 0: OFF (jump to boost voltage)
•
Benefit: flux is built up quickly
Drawback: motor may move
P1350 = 1: ON (smooth voltage build-up)
•
Benefit: motor less likely to move
Drawback: flux build-up takes longer
SINAMICS V20 Inverter
Operating Instructions, 11/2016, A5E34559884-006
Range Factory
default
- -
- -
0.000 - 5.499 0.250
0.000 - 50.000 0.300
- -
0 - 1 0
OFF
ON
Can be Scaling
changed
- -
- -
U, T -
U, T -
- PERCENT -
U, T -
Parameter list
8.2 Parameter list
Data Data Acc.
set type Level
- Float 3
- Float 3
DDS Float 3
DDS Float 3
Float 2
DDS U16 3
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