3-02 Minimum Reference
Range: Function:
Size
related*
[ -999999.999 -
par. 3-03
ReferenceFeed-
backUnit]
Enter the Minimum Reference. The
Minimum Reference is the lowest
value obtainable by summing all
references. The Minimum
Reference value and unit matches
the configuration choice made in
parameter 1-00 Configuration Mode
and 20-12 Reference/Feedback Unit,
respectively.
NOTICE
This parameter is used in
open loop only.
3-04 Reference Function
Option: Function:
[0] Sum Sums both external and preset reference
sources.
[1] External/
Preset
Use either the preset or the external reference
source.
Shift between external and preset via a
command on a digital input.
3-10 Preset Reference
Array [8]
Range: Function:
0 %* [-100 -
100 %]
Enter up to eight different preset references
(0-7) in this parameter, using array
programming. The preset reference is stated as
a percentage of the value Ref
MAX
(3-03 Maximum
Reference, for closed loop see 20-14 Maximum
Reference/Feedb.). When using preset references,
select Preset ref. bit 0/1/2 [16], [17] or [18] for
the corresponding digital inputs in parameter
group 5-1* Digital Inputs.
P3-03
P3-02
0 50 100%
P3-10
130BB036.10
Illustration 6.10
[P 5-13=Preset ref. bit 0]
Preset
[P 5-14=Preset ref. bit 1]
[P 5-15=Preset ref. bit 2]
10101010
76543210
29
12
(+24V)
11001100
32
11110000
33
130BA149.10
Illustration 6.11
3-15 Reference 1 Source
Option: Function:
Select the reference input to be used
for the first reference signal.
Parameter 3-15 Reference 1 Source,
parameter 3-16 Reference 2 Source and
3-17 Reference 3 Source define up to 3
different reference signals. The sum
of these reference signals defines the
actual reference.
[0] No function
[1] * Analog Input 53
[2] Analog Input 54
[7] Pulse input 29
[8] Pulse input 33
[20] Digital pot.meter
[21] Analog input X30/11
[22] Analog input X30/12
[23] Analog Input X42/1
[24] Analog Input X42/3
How to Programme VLT HVAC Drive FC 102 Operating Instructions
96 MG11F402 - Rev. 2013-12-16
66
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