Lenze Engineer v2.21 - Manual (Page 111)

Lenze · Engineer · 2.13 EN - 10/2014
111
Device functions with active online connection
Data logger
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7.7 Data logger
This function is available from »Engineer« HighLevel V2.10!
The data logger serves to record the temporal course of parameter values and display it as a line
diagram.
• The data logger is available in the »Engineer« for all parameterisable devices.
• For cross-device recording, the data logger is also available for the upper project element, for
system modules, and for axes.
General procedure
Go to the data logger user interface, select the parameters to be recorded and set the required
trigger condition and sampling rate. If there is an online connection to the device, the measurement
can be started. With a valid configuration, the values of the selected parameters are then read in via
the existing online connection and displayed graphically as a line diagram.
Typical applications
• Graphic display of any measured variable (e.g. output frequency, DC-bus voltage, and motor
current)
• Detection of process factors without additional measuring devices (as e.g. oscilloscope,
voltmeter, and ammeter)
• Support during commissioning, maintenance, and troubleshooting
• Comfortable documentation of the device behaviour/application in connection with product
liability and quality assurance
Special features
• Measuring on four independent channels at the same time
• Triggering to a channel, a parameter, or immediate start
• Detecting measured values before and after the trigger event (pre/post trigger)
• Cursor and zoom function for analysing the measurement
• Saving & loading the data logger recording
• Reuse of data logger configurations
• Export of the measured values via the clipboard for further processing

Note!
In contrast to the oscilloscope function integrated in some controllers, the data logger
records the parameter value only with the aid of the computer. Thus, the measurement
is not time-equidistant (not in real time)!