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FWD/REV: It is the LED indictor for forward/reverse rotation. When it is OFF, it
indicates the driver is in forward rotation status; when it is ON, it indicates the
driver is in reverse rotation status.
TUNE/TC: It is the LED indictor for tuning. When it is ON it indicates the torque
control status; when it is OFF, it indicates the speed control status.
2) Unit LED indictor description:
Hz refers to frequency unit.
A refers to current unit.
V refers to voltage unit.
RPM refers to rotation speed unit.
% refers to percentage
3) Digital display zone:
Five-digit LED display, able to display setup frequency, output frequency,
various monitoring datas and alarm codes.