When the Siemens MM420 inverter is quickly debugged, it appears to be abrupt with the d324-325 cycle after A0541. It has been such a long time. What is the reason?
Answer: When the P1910=1 step is executed, the motor parameter measurement process is started after a running command is given to the inverter.
At this time, A0541 will continue to flash. When the ON button on the BOP panel is pressed, automatic detection of motor data is started. At this point, the inverter will complete multiple measurements by injecting a short pulse current into the motor with a “click†sound. When the internal motor parameters are calculated later, “busy†will appear on the BOP panel.
Then you have to wait until the device automatically "stops" the self-test (until P1910 = 0, the self-test process ends).
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