Chapter 5 Parameters_VFD-B Series
5-40
Revision 10/2005, BE13, SW V4.08
(1) It is recommended to use “ramp to stop” for safety of personnel or to prevent material from being
wasted in applications where the motor has to stop after the drive is stopped. The deceleration
time has to be set accordingly.
(2) If the motor free running is allowed or the load inertia is large, it is recommended to select “coast to
stop”.
For example: blowers, punching machines, centrifuges and pumps.
RUN
STOP
RUN
STOP
Frequency
Frequency
Time
Time
output
frequency
output
frequency
motor
speed
motor
speed
operation
command
operation
command
stops according to
decel eration time
free run to stop
ramp to stop and free run to stop
EF
Frequency
Frequency
frequency output
motor
speed
EF
operation
command
stops according to
decel eration time
When Pr.02-02 is set to 2 or
frequency
output
free run to stop
operation
command
When Pr.02-02 is set to 0 or 1
motor
speed
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