WEG ECW500, User Manual

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Functional Description .
58 | ECW500
The self-calibration must always be performed with the ECW500 out of operation (disconnected from the
synchronous machine). It is accessible through the HMI´s menus or by the communication supervisory
(parameter 30108). The self-calibration is also performed automatically every time the default factory parameters
are loaded.
An event is generated with the results after the calibration be performed.
ATTENTION!
The current measurement calibration must be performed with the ECW500 excitation turned off.
6.12.2 Self-Calibration of the Analog Inputs
For the analog input voltage (-10V to +10V), it is also available in the ECW500 the self-calibration function. It
allows correcting inaccuracies inherent in the product manufacturing and in the tolerance of components,
providing greater precision for measurement.
The self-calibration must always be performed with the ECW500 out of operation (disconnected from the
synchronous machine) and the analog input terminals must be short circuited. It is accessible from the menus of
the HMI or by the supervisory communication (30110).
Once performed the calibration, an event is generated in the list indicating the result.
ATTENTION!
The self-calibration must be performed with the excitation of the ECW500 off and with the voltage
analog input terminals short circuited.