Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 135

Parameter Description
20-30 Refrigerant
Option: Function:
[4] R502
[5] R717
[6] R13
[7] R13b1
[8] R23
[9] R500
[10] R503
[11] R114
[12] R142b
[14] R32
[15] R227
[16] R401A
[17] R507
[18] R402A
[19] R404A
*
[20] R407C
[21] R407A
[22] R407B
[23] R410A
[24] R170
[25] R290
[26] R600
[27] R600a
[28] R744
[29] R1270
[30] R417A
[31] R422A
[32] R413A
[33] Isceon 29
[34] R427A
[35] R438A
[36] Opteon XP10
[37] R407F
[38] R1234ze
[39] R1234yf
20-31 User Defined Refrigerant A1
Range: Function:
10 [8 - 12] Use this parameter to enter the value of
*
coefficient A1 when parameter 20-30 Refrigerant is
set to [7] User defined.
20-32 User Defined Refrigerant A2
Range: Function:
-2250 [-3000 - Use this parameter to enter the value of
*
-1500] coefficient A2 when
parameter 20-30 Refrigerant is set to [7] User
defined.
MG16H202
Programming Guide
20-33 User Defined Refrigerant A3
Range:
250 [200 -
*
300]
20-40 Thermostat/Pressostat Function
Select the thermostat/pressostat function. Only available in a
closed-loop process.
Option:
[0]
[1]
[2]
20-41 Cut-out Value
Enter the cutout value at which the compressor stops.
Range:
Size related
20-42 Cut-in Value
Enter cut-in value at which the compressor starts.
Range:
Size related
3.16.4 20-7* PID Auto-tuning
The frequency converter PID closed-loop controller
(parameter group 20-** FC Closed Loop) can be auto-tuned,
simplifying and saving time during commissioning, while
ensuring accurate PID control adjustment. To use auto-
tuning, configure the frequency converter for closed loop
in parameter 1-00 Configuration Mode.
Use a graphical local control panel (GLCP) to react to
messages during the auto-tuning sequence.
Enabling parameter 20-79 PID Autotuning puts the
frequency converter into auto-tuning mode. The LCP then
shows on-screen instructions.
To start the fan/pump, press [Auto On] and apply a start
signal. Adjust the speed manually by pressing [
a level where the feedback is around the system setpoint.
Danfoss A/S © 05/2016 All rights reserved.
Function:
Use this parameter to enter the value of
coefficient A3 when
parameter 20-30 Refrigerant is set to [7] User
defined.
Disabled
Absolute
Relative
[ -999999.999 - 999999.999 Reference-
*
FeedbackUnit]
[ -999999.999 - 999999.999 Reference-
*
FeedbackUnit]
3
Function:
Function:
Function:
▲ ▼
] or [ ] to
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