WEG CFW100 User Manual page 14

60 Hz => 8192
30 Hz => 13 bit reference
13 bit reference = 30 × 8192
13 bit reference = 4096
This parameter also accepts negative values to revert the motor speed direction. The reference speed direction,
however, depends also on the control word - P0682 - bit 2 setting:
Bit 2 = 1 and P0683 > 0: reference for forward direction

Bit 2 = 1 and P0683 < 0: reference for reverse direction

Bit 2 = 0 and P0683 > 0: reference for reverse direction

Bit 2 = 0 and P0683 < 0: reference for forward direction

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60
=> Value corresponding to 30 Hz in a 13 bit scale
Programming