User`s manual

apfiff09 marine vacon • 117
24-
6
7.4.4 Analogue input 3 & 4
Analogue Inputs 3 and 4 can be written form fieldbus. This allows signal scaling and inversion.
useful e.g. in case when PLC is not operational (value zero received) signal will be automatically at
maximum.
P
AI3-4 Signal Sel
IN
OUT
AN.IN
FILTER
IN
TC
P AI3/4 Filter Time
P AI3-4 Custom Max
P AI3-4 Custom Min
SEL
G
IN 0
IN 1
0.9
V Analogue Input 3/4
A AI4
A AI3
SCALING
OUT
Out_Max
In_Min
Out_Min
In_Max
IN
Invert
0
100 %
SCALING
OUT
Out_Max
In_Min
Out_Min
In_Max
IN
Invert
LT
IN 1
IN 2
V Analogue Input 3/4
V Analogue Input 3/4
P AI3-4 Scale Max
P AI3-4 Scale Min
Write to Par ID
ID To Write
IN
P AI3-4 Control. ID
P2.4.5.1 AI3 signal selection ID141
P2.4.6.1 AI4 signal selection ID152
Connect the AI3/AI4 signal to the analogue input of your choice with this parameter. For
more information, see Chapter 4 .
When the parameter for Analogue input signal selection is set to 0.1 you can control the
analogue input monitoring variable from Fieldbus by assigning the Process Data Input ID
number to the analogue input monitoring signal thus allowing the PLC input signals to
be scaled with analogue input scaling functions.
P2.4.5.2 Analogue input 3 signal filtering time ID142
P2.4.6.2 Analogue input 4 signal filtering time ID153
First order filtering is used for analogue inputs signals 3 and 4.
0
2000
4000
6000
8000
10000
12000
-0,045
0,545 1,135 1,725 2,315 2,905 3,495 4,085 4,675 5,265 5,855 6,445
Unfiltered
1 s filter time
63 %