Vacon CX - Page 27

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Page 26
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Multi-purpose Control Application IIMulti-purpose Control Application II
Multi-purpose Control Application IIMulti-purpose Control Application II
Multi-purpose Control Application II
Figure 6-8 Examples of the scaling of U
in
and I
in
inputs .
2. 202. 20
2. 202. 20
2. 20
Free analogue input signalFree analogue input signal
Free analogue input signalFree analogue input signal
Free analogue input signal
Selection of input signal of free analogue input (an input not used for reference
signal):
0 = Not in use
1 = Voltage signal U
in
2 = Current signal I
in
3 = Voltage signal Ain1 from terminals 202-203 of I/O Expander
4 = Analogue signal Ain2 from terminal 204-205 of I/O Expander
- current signal Vacon CX 100 Opt
- voltage signal Vacon CX 102 Opt
5 = Fieldbus signal
- the signal comes through the fieldbus and depends on the option
board used
2. 212. 21
2. 212. 21
2. 21
Free analogue input signalFree analogue input signal
Free analogue input signalFree analogue input signal
Free analogue input signal
functionfunction
functionfunction
function
This parameter sets the function
of the free analogue input:
00
00
0 = Function is not used
11
11
1 = Reducing motor current limit
(par. 1
..
..
. 7)
This signal will adjust the
maximum motor current
between 0 and parameter
max. limit set with parameter
1.7. See figure 6-9.
Figure 6-9 Reducing of max. motor current.
2 2
2 2
2 = Reducing DC brake current.
The DC braking current can
be reduced with the free
analogue input signal,
between 0.15xI
nCX
and
current set with parameter
4
..
..
. 8.
See figure 6-10.
Figure 6-10 Reducing DC brake current.
0
Par. 2. 19 = -30%
Par. 2. 20 = 140%
100
UD012K34
100 140
-30
0
0
4
100
0
Par. 2. 19 = 30%
Par. 2. 20 = 80%
1008030
10.0 V
20.0 mA
20.0 mA
76.5
(15.3 mA)
17.7
(3.5 mA)
Scaled
input signal [%]
Analogue
input [%]
Scaled
input signal [%]
Analogue
input [%]
0
0
4
10.0 V
8.03.0
20.0 mA
16.06.0
16.88.8 20.0 mA
100%
Par. 1. 7
UD012K61
Torque limit
Analogue
input
Signal range
0 V
0 mA
4 mA
Custom
10 V
20 mA
20 mA
Custom
0
100%
Par. 4. 8
0,15 x I
nFU
UD012K58
DC-braking
current
Free analogue
input
Signal range