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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)!

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Lenze Engineer v2.21 Manual do Utilizador Página 111