OPERATION
Vol
ta
ge
(%
ful
l v
ol
ta
ge
)
1
1:
Stop Time
(parameter 2G)
Time
Adaptive Control for Stopping
In an adaptive control soft stop, the EMX4e controls the current in order to stop the
motor within a specified time. Adaptive Control can be useful in extending the
stopping time of low inertia loads.
If adaptive control is selected, the first soft stop will use timed voltage ramp. This
allows the EMX4e to learn the characteristics of the connected motor. This motor
data is used by the EMX4e during subsequent adaptive control stops.
CAUTION
Adaptive Control controls the motor's speed profile, within the
programmed time limit. This may result in a higher level of current than
traditional control methods.
If replacing a motor connected to an EMX4e programmed for Adaptive Control
starting or stopping, the starter will need to learn the characteristics of the new
motor. Change the value of parameter 1B
Motor Full Load Current
or parameter 2I
Adaptive Control Gain
to initiate the re-learning process. The next start will use
constant current and the next stop will use timed voltage ramp.
Sp
ee
d
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0
18736.
A
1
2
1. Constant Deceleration
2.
Stop Time
(parameter 2G)
Time
Adaptive Control is ideal for pumping applications, where it can minimise the
damaging effects of fluid hammer.
EMX4e User Manual (710-18433-00C) |
51
