Danfoss VLT FC 103 Programming Manual page 117

Parameter Description
refrigerant pressure measurements into temperature
values.
20-30 Refrigerant
Select the refrigerant used in the compressor application. This
parameter must be specified correctly for the pressure to
3 3
temperature conversion to be accurate. If the refrigerant used is
not listed in choices [0] through [6], select User defined [7]. Then,
use 20-31 User Defined Refrigerant A1, 20-32 User Defined
Refrigerant A2 and 20-33 User Defined Refrigerant A3 to provide
A1, A2 and A3 for the equation below:
Temperature =
Option:
[0]
*
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
20-31 User Defined Refrigerant A1
Range:
10 [8 - 12 ] Use this parameter to enter the value of
*
116
A 2
A 3
−
( ln ( Pe + 1 ) − A 1 )
Function:
R user
R12
R22
R134a
R502
R717
R13
R13b1
R23
R500
R503
R114
R142b
R32
R227
R401A
R507
R402A
R404A
R407C
R407A
R407B
R410A
R170
R290
R600
R600a
R744
R1270
R417A
Isceon 29
Function:
coefficient A1 when 20-30 Refrigerant is set to
User defined [7].
MG16H102 - VLT
®
VLT Refrigeration Drive Programming Guide
20-32 User Defined Refrigerant A2
Range:
-2250
*
20-33 User Defined Refrigerant A3
Range:
250
*
20-35 Fan 1 Area [in2]
Range:
750
in2
*
20-36 Fan 2 Area [m2]
Range:
0.500
m2
*
20-37 Fan 2 Area [in2]
Range:
750
in2
*
®
is a registered Danfoss trademark
Function:
[-3000 - Use this parameter to enter the value
-1500 ] of coefficient A2 when 20-30 Refrigerant
is set to User defined [7].
Function:
[200 - 300 ] Use this parameter to enter the value of
coefficient A3 when 20-30 Refrigerant is set
to User defined [7].
Function:
Used for setting the area of the air ducts in
connection with feedback conversion
pressure/velocity to flow. The unit (in
determined by the setting of 0-03 Regional
Settings. Fan 1 is used with feedback 1. In
case of flow difference control, set
20-20 Feedback Function to [1] Difference, if
flow fan 1 – flow fan 2 is to be controlled.
[0 -
15000 in2]
Function:
Used for setting the area of the air ducts in
connection with feedback conversion
pressure/velocity to flow. The unit (m
determined by the setting of 0-03 Regional
Settings. Fan 2 is used with feedback 2. In
case of flow difference control, set
20-20 Feedback Function to [1] Difference, if
flow fan 1 – flow fan 2 is to be controlled.
[0.000 -
10.000
m2]
Function:
Used for setting the area of the air ducts in
connection with feedback conversion
pressure/velocity to flow. The unit (in
determined by the setting of 0-03 Regional
Settings. Fan 2 is used with feedback 2. In
case of flow difference control, set
20-20 Feedback Function to [1] Difference, if
flow fan 1 – flow fan 2 is to be controlled.
[0 -
15000 in2]
2
) is
2 ) is
2
) is