Vacon Plc
Phone: +358-201 2121
Fax:+358-201 212 205
Service: +358-40-8371 150
E-mail: [email protected]
E-mail: [email protected]
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%).