Commissioning
7.2 Checks with mains power supply and without motor
Installation and Operating Instructions SINAMICS G180
Operating Instructions, 02/2019, 4BS0751-007
119
You can enter the following control variants:
● "async_SVC": Asynchron Space Vector Control, vector control
– Use normal three-phase motors without special applications for converter operation.
– Use the rating plate data for parameterization purposes if the motor is to be operated
with the converter.
● "async_FOC": Asynchron Field Oriented Control, field-oriented control
– For this function, use a tachogenerator directly on the motor shaft which meets the
required conditions. More detailed information can be found in the section "Sub-D
connections and DIL switches" (Page 148).
– The load machine and the required dynamics determine the maximum required
impulses per revolution which the tacho should have.
– Use at least 1,024 pulses / 360°. If you increase the dynamics, then also increase the
number of impulses, e.g. to 2,048 or 4,096. Use a tacho with larger number of
impulses for smaller flywheels.
Set the following parameters in the control version "async_FOC" under "P-MOTOR DATA/":
1. Under "/Motor type", set "async_FOC",
2. Select the tacho type used for "/Sensor".
3. Set the number of impulses per motor revolution under "/Pulses/360".
4. In addition to entering the motor data on the rating plate, also set the exact motor no-load
current under "/I idle".
– Read the rated speed /n motor from the rating plate.
– Specify the no-load current in the operating mode "async_SVC", in mains operation or
ask the motor manufacturer for this value.
5. Always perform the "Auto-Tuning".
6. Select the menu level "Expert" in order to reach the "P-CONTROL PARAMETER" menu
item.
– Adjust the optimum control behavior of your system for load change and speed
change under "P-CONTROL PARAMETER".
– Set the values for "/P sp.ctr." and "/Tr sp.ctr." in rated operation.
To Next Page
Loading...
