Scale parameters and functions
8.4 Calibration procedure
SIWAREX WP321
Manual, 07/2014, A5E33715669A-02
57
Scales can be rapidly commissioned with automatic calibration. The accuracy of the scale
greatly depends on the entered parameters and the mechanical properties of the scale.
However, you achieve the best level of accuracy for the scales by using calibration weights.
During initial commissioning with automatic calibration, you must reset the module using the
"Load factory settings" command.
Subsequently specify the load cell parameters in data record 10. Command 82 "Perform
automatic calibration" then uses this data and the currently applied dead load to calculate the
characteristic curve of the scale. The characteristic curve is active immediately.
The characteristic curve data in data record 3 active prior to execution of command 82 is
directly overwritten.
Automatic calibration requires the following criteria:
● Correct mechanical installation of the scale
● Scale is empty (only mechanical installation (= dead load) present on the cells)
● Load cells are evenly loaded
● There are no shunt circuits
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