Lenze i950 Series, Manual

Page: 304 / 500

13.11.3 Manual "current/frequency" test mode
Preconditions for the performance
•
The motor must rotate freely.
•
The inverter is error-free and in " Switched on " device state.
Functional description
In this test mode, three phase currents are injected into the connected motor after the inver-
ter is enabled.
•
Adaptation of the phase currents:
Parameter Info Data type
0x2835:001 R.m.s. value of a phase current
•
Selected in [%] based on the rated motor cur-
rent.
INTEGER_16
0x2835:002 Frequency INTEGER_16
0x2835:003 Starting angle INTEGER_16
•
Reading out the present phase currents:
Parameter Info Data type
Motor current phase U INTEGER_32
Motor current phase V INTEGER_32
Motor current phase W INTEGER_32
Advantages compared to the manual "voltage/frequency" test mode
•
The current cannot be set freely but is adjusted to a defined value.
•
If a synchronous motor is connected, it is possible to predict the torque.
Response of the motor during performance
•
The motor moves as a function of the set output frequency.
After the inverter has been enabled, the synchronous motor makes a jerky com-
pensating movement if its pole position does not correspond to the starting
angle.
How to activate the manual "current/frequency" test mode:
1
.
Disable inverter
4
Enable operation .
^
320
2 . Change to the "current/frequency" test mode.
4
0x2825 =2
3
.
Enable the inverter to start the test mode.
4
.
To stop the test mode again:
•
Disable inverter.
•
Change back to the CiA402 operating mode.
4
0x2825 = 0
Configuring the motor control
Testing the motor control
Manual "current/frequency" test mode
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