Eaton Cutler-Hammer SLX9000 Series, Руководство пользователя

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SLX9000 Adjustable Frequency Drives User Manual
9-18
For more information visit: www.eaton.com MN04003020E
January 2009
Figure 9-11: DC-Braking Time When Stop Mode = Coasting
Figure 9-12: DC-Braking Time When Stop Mode = Ramp
Par. 2.1.12 = 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
2.4.5, where the DC-braking starts.
The braking time is defined with parameter 2.4.4. If high inertia exists, it is
recommended to use an external braking resistor for faster deceleration. See
Figure
9-12 .
2.4.5 DC-braking frequency in ramp stop ID515
The output frequency at which the DC-braking is applied. See Figure 9-12 .
t
fout
Output Freque n cy
Motor S peed
DC-Braki n g ON
RUN
S TOP
t = 1 x Par. ID508
t
fout
f
n
f
n
Output Freque n cy
Motor S peed
DC-Braki n g ON
RUN
S TOP
t = 0.1 x Par. ID508
0.1 x f
n
t
Output Freque n cy
Motor S peed
DC-Braki n g
RUN
S TOP
Par. ID515
t = Par. ID508
fout