Vacon CX - Page 35

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Vacon Page 35
Pump control with autochange
4. 12 Jogging speed reference
Parameter value defines the jogging speed selected with the digital input.
frequency
reference
See figure 6-15.
4. 11 DC-brake time at start
0 DC-brake is not used
>0 DC-brake is activated when
the start command is given
and this parameter defines
the time before the brake is
released. After the brake is
released, the output fre-
quency increases accord-
ing to the set start function
parameter
4.6 and accelera-
tion parameters (1. 3, 4. 1 or
4.2, 4.3), see figure 6-16.
Figure 6-16 DC-braking time at start
4. 10 Execute frequency of DC-brake during ramp Stop
t
UD009K22
Par 4. 11
RUN
STOP
Output
frequency
5. 1 Prohibit frequency area,
5. 2 Low limit/High limit
5. 3
5. 4
5. 5
5. 6
In some systems it may be
necessary to avoid certain
frequencies because of
mechanical resonance problems.
With these parameters it is
possible to set limits for three "skip
frequency" regions.
Figure 6-17 Example of prohibit
frequency area setting.
5. 1 5. 2
5. 3 5. 4
5. 5 5. 6
[Hz]
[Hz]
UD009K33
f
out
6. 1 Motor control mode
0 = Frequency control: The I/O terminal and panel references are frequency
references and the frequency converter controls the
output frequency (output freq. resolution 0,01 Hz)
1 = Speed control: The I/O terminal and panel references are speed
references and the frequency converter controls the
motor speed (regulation accuracity ± 0,5%).