description of parameters
vacon
•
23
24-hour s358 (0)40 837 1150 • Email: [email protected]
t
NX12K23
M
o
t
o
r
s
p
e
e
d
O
u
t
p
u
t
f
r
e
q
u
e
n
c
y
D
C
-
b
r
a
k
i
n
g
RUN
STOP
fout
t=1 x par. 2.3.3.3
P2.3.3.4
Par. 2.4.2 = 1; Stop function = Ramp
After the Stop command, the speed of
the motor is reduced according to the
set deceleration parameters, as fast
as possible, to the speed defined with
parameter 2.3.3.4
, where the DC-
braking starts.
The braking time is defined with
. If high inertia
exists, it is recommended to use an
external braking resistor for faster
deceleration. See Figure 5.
Figure 5. DC-braking time when Stop mode = Ramp
Par. 2.4.2 = 2; Stop function = Stop by frequency. limit
Stop mode depends on the actual frequency of the motor. If frequency is above the
frequency limit (
) then the stop mode is coasting (see Figure 4). If frequency is
even or below the frequency limit then the stop mode is ramp (see Figure 5).
2.3.3.4
DC-braking frequency at stop
The output frequency which the DC-braking is applied. See Figure 5