9000XDrive User Manual
‘Skip’ text box defines how the recorded file is read back to PC. If the value is 0, all the
data is read, if it is 1, every second measurement is read, if it is 2, every third measurement is
read and so on. If the recording is long, you can “compress” it into screen by skipping some
measurements. Note that aliasing will happen is you skip the measurements.
Use this scroll bar to navigate through the recorded file. One click on the arrows will
move one page forward or backward in the file. If you need to move less, you can use the ‘Fine’
scroll bar. It will move the graphics within one page.
You can print a page or a range of pages of the recorded data.
The Datalogger window can be used to set and read datalogger files from the frequency
First you set signals that you are interested in and also one signal that is used as a trigger. The
frequency converter will then poll the trigger signal and see when the conditions for the trigger are
met. After the datalogger has been set, the frequency converter starts to log the signals. This
logging can be made at a very high speed (1ms interval) because all the logging is done in the
frequency converter itself.
When the trigger signal triggers, the datalogging is stopped and depending on the PreTrigg
setting the buffer now contains data from the trigging point and some time before and after it.
After the datalogger buffer is full, you can read it to the PC and see the signals in graphical
You can close the Datalogger window after you have set your datalogger conditions to the
frequency converter. You can see the status of the datalogger in 9000XDrive’s status row. It will
show one of the following texts: Idle, Waiting Trigger, Post Trigging, Trigged.
The datalogger data in the frequency converter stays there until you remove power. So you can
read the existing datalogger data at any time. When the data is read from the frequency
converter, it is always saved to a file in your PC. You can open and view these files also at any
After loading a system program to a frequency converter, the system software puts eight
predefined signals to datalogger by default. These variables are: IU_CurrentMotor_fws16,
IV_CurrentMotor_fws16, IW_CurrentMotor_fws16, DCVoltageUnFiltered_fwu16, FreqOut_fws16,
MotorRegulatorStatus_fwu16, MotorCurrentUnFiltered_fwu16, MotorTorqUnfiltered_fws16. The
Trigger signal is MCStatus. (Note that these depend on the system program.)
So there is always a default datalogger in the frequency converter unless you set your own
Note! The datalogger buffer is not cleared when new a datalogger is set. If the new datalogger
triggers before about 5 seconds has elapsed since the datalogger has been set, there might be
old data in the buffer! The data after the trigger point is always correct, but the data before trigger
point might be wrong.