Danfoss VLT HVAC Operating Instructions Manual page 71

®
VLT HVAC Drive Operating Instructions
3-02
Value:
-100000.000 – par. 3-03
Function:
Enter the Minimum Reference. The Minimum
Reference is the lowest value obtainable by
summing all references.
3-03
Value:
Par. 3-02 - 100000.000
Function:
Enter the Maximum Reference. The Maximum
Reference is the highest value obtainable by
summing all references.
3-10
Array [8]
Value:
-100.00 - 100.00 %
Function:
Enter up to eight different preset references
(0-7) in this parameter, using array program-
ming. The preset reference is stated as a per-
centage of the value Ref
Maximum Reference
the other external references. If a Ref
ferent from 0 (Par. 3-02
is programmed, the preset reference is calcu-
lated as a percentage of the full reference
range, i.e. on the basis of the difference be-
tween Ref
ue is added to Ref
references, select Preset ref. bit 0 / 1 / 2 [16],
[17] or [18] for the corresponding digital in-
puts in parameter group 5.1* Digital Inputs.
Minimum Reference
0.000 Unit
Maximum Reference
0.000 Unit
Preset Reference
(par. 3-03
MAX
) or as a percentage of
Minimum Reference
and Ref . Afterwards, the val-
MAX MIN
. When using preset
MIN
MG.11.A4.02 - 09.10.06. VLT ® is a registered Danfoss trademark
6. How to programme the frequency converter
3-15 Reference 1 Source
Value:
No function
Analog input 53
Analog input 54
Frequency input 29
Frequency input 33
Digital pot.meter
Analog input X30-11
Analog input X30-12
Analog Input X42/1
Analog Input X42/3
Analog Input X42/5
Ext. Closed Loop 1
0.00%
Ext. Closed Loop 2
Ext. Closed Loop 3
Function:
Select the reference input to be used for the
first reference signal. Par. 3-15, 3-16 and 3-17
dif-
define up to three different reference signals.
MIN
)
The sum of these reference signals defines the
actual reference.
This parameter cannot be adjusted while the
motor is running.
3-16 Reference 2 Source
Value:
No function
Analog input 53
Analog input 54
Frequency input 29
Frequency input 33
Digital pot.meter
Analog input X30-11
Analog input X30-12
Analog Input X42/1
6
[0]
[1]
[2]
[7]
[8]
[20]
[21]
[22]
[23]
[24]
[25]
[30]
[31]
[32]
[0]
[1]
[2]
[7]
[8]
[20]
[21]
[22]
[23]
71