How to make Altivar drives stop with (1) ramp to stop, (2) freewheel stop, (3) fast stop when control is over communication (ATV320, ATV340, ATV process drives)

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Concerning Fast stop. When motor is running then your write CMD (logic address 8501 / 8601) =2 ( fast Stop), the deceleration ramp will depend to parameters DEC value and DCF factor.
Of course parameters DEC depend to FRS value.
Example:
if FRS=50.0hz. DEC=10Hz and DCF=5. the motor run at 50hz, when CMD=2,the motor will go from 50hz to 0hz for a time= (DEC/DCF), means 2 seconds.
So you can adjust this ramp ( fast), using DEC & DCF parameters, ramp= ( DEC/DCF).

DOTD parameter will define the drive stop type, in case of stop by sending “disable operation” command via communication (CMD=7).
ATV340

As you write in your document, , to start, you write 6, 7 and then 15 in order to go in “operation enable” and start.
ATV320

When the drive is running in “operation enable”, it’s possible to stop by writing 7, 6 or 0.
If stop by sending 0, the drive will always stop in freewheel and go in “switch on disable”.
If stop by sending 6, the drive will always stop in freewheel and go in “ready to switch on”.
If stop by sending 7, the DOTD will have influence :
When DOTD=0, the drive stop in freewheel, the power and the torque are cut immediately. The drive go back in “Switched On”.
When DOTD=1, the drive stop in ramp. During the ramp the state is always “Operation enable”. When the ramp is finish the drivecom state is changed to “Switched on”, and so the power and the torque are cut. The drive go back in “Switched on”

ATV340