Delta VFD300C43S-HS User Manual page 451

 bit1=0: no function.
bit1=1: Inertia estimation function is enabled. bit1 setting would not activate the estimation
process, set Pr.05-00 = 12 to begin FOC / TQC Sensorless inertia estimating.
 bit2=0: no function.
bit2=1: when frequency command is less than Fmin (Pr.01-07), it uses the zero-servo function
as position control.
 bit6 0Hz linear-cross function: keeps the S-Curve in linear-cross the 0Hz point when the S
acceleration/ deceleration curves (Pr.01-24–Pr.01-27) are set, and the forward / reverse run
cross 0Hz.
bit6=1: The S acceleration / deceleration curves (Pr.01-24–Pr.01-27) do not affect the drive
starts and stops. Forward / reverse rotation crosses the zero point in linear.
Chapter 12 Description of Parameter SettingsC2000-HS
12.1-11-2