6.- Location of the probes
6.1.- Proportional mode
WITHOUT FREQUENCY CONVERTER
The controller activates (red line) or deactivates (green line) the different stages/compressors available in a linear
manner depending on the reading obtained in
probe 1
until the Set Point (E01) is reached again, as shown in
the following figure.
WITH FREQUENCY CONVERTER
If there is a frequency converter, the frequency converter modulates the power of
compressor 1
between 0 and
100% (blue zone). If demand increases, the following compressor or stage (without converter) is added, again
modulating the power of
compressor 1
using the converter, and so on.
This method allows modulating the total power available using just one frequency converter.
In both cases, the delays
t01
to
t04
must be accounted for.
Stages /
Compressors
stage / compressor 1
ON
stage / compressor 2
ON
stage / compressor 3
ON
stage / compressor 4
ON
Bandwidth (
E06
)
Bandwidth (
E06
)
Bandwidth (
E06
)
Bandwidth (
E06
)
Direct
operation (
C07
=0)
E01
E01
E01
E01
Direct
operation (
C07
=0)
Inverse
operation (
C07
=1)
Inverse
operation (
C07
=1)
Pressure in Probe 1
Pressure in Probe 1
Total power applied
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
100%
0%
E06
n
E06
n
E06
n
E06
n
n: Number of stages/compressors available
n: Number of stages/compressors available
R2
R2
R2
R2
R3
R3
R2
R2
R3
R3
R4
R4
10
1454H502 Ed.03
Summary of Contents for AKO-14545
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