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Scoping the SIN and COS of resolver or sine encoder in AKD
First to review what F402 means:
Analog signal amplitude is too low. Analog fault (resolver signal amplitude or sin/cos amplitude)
Check primary feedback (X10 connection), resolver and sine/cos encoder only.
Then next is to SCOPE the signals and see EXACTLY what the issue is! You can scope both analog input channels or alternatively scope the sum of the two.
See downloadable PDF for procedures.