
Program features 69
Speed compensated stop
Speed compensation stop is available for example for applications where a conveyer
needs to travel a certain distance after receiving the stop command. At maximum
speed, the motor is stopped normally along the defined deceleration ramp, after the
application of a user defined delay to adjust the distance traveled. Below maximum
speed, stop is delayed still more by running the drive at current speed before the
motor is ramped to a stop. As shown in the figure, the distance traveled after the stop
command is the same in both cases, that is, area A + area B equals area C.
Speed compensation does not take into account shape times (parameters
and
). Positive shape times lengthen the distance
traveled.
Used
speed
A
Motor speed
Max.
speed
B
C
t
(s)
Area A + Area B = Area C
Stop
command
D1
D1 = Delay defined by parameter
D2 = Additional delay calculated by
speed compensated stop
D2
ACS180 FW.book Page 69 Tuesday, March 9, 2021 2:25 PM