Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 85

Parameter Description
6-50 Terminal 42 Output
Option: Function:
[104] Torque rel to 0–Torque limit (parameter 4-16 Torque
limit Limit Motor Mode), (0–20 mA).
[105] Torq relate to 0–Motor rated torque, (0–20 mA).
rated
[106] Power 0–Motor rated power, (0–20 mA).
[107] Speed 0–Speed high limit
(parameter 4-13 Motor Speed High Limit
[RPM] and parameter 4-14 Motor Speed
High Limit [Hz]), (0–20 mA).
[108] Torque
[109] Max Out Freq
[113] Ext. Closed 0–100%, (0–20 mA).
Loop 1
[114] Ext. Closed 0–100%, (0–20 mA).
Loop 2
[115] Ext. Closed 0–100%, (0–20 mA).
Loop 3
[121] Air pres. to
Flow
[122] Air pres. to
Flow 4-20mA
[130] Output freq. 0–100 Hz.
4-20mA
[131] Reference Minimum reference–Maximum reference.
4-20mA
[132] Feedback -200% to +200% of
4-20mA parameter 20-14 Maximum Reference/
Feedb.
[133] Motor cur. 0–Inverter maximum current
4-20mA (parameter 16-37 Inv. Max. Current).
[134] Torq.% lim 4-20 0–Torque limit (parameter 4-16 Torque
mA Limit Motor Mode).
[135] Torq.% nom 0–Motor rated torque.
4-20mA
[136] Power 4-20mA 0–Motor rated power.
[137] Speed 4-20mA 0–Speed high limit
(parameter 4-13 Motor Speed High Limit
[RPM] and parameter 4-14 Motor Speed
High Limit [Hz]).
[138] Torque 4-20mA
[139] Bus ctrl. 0–100%, (0–20 mA).
[140] Bus ctrl. 4-20 0–100%.
mA
[141] Bus ctrl t.o. 0–100%, (0–20 mA).
[142] Bus ctrl t.o. 0–100%.
4-20mA
[143] Ext. CL 1 0–100%.
4-20mA
[144] Ext. CL 2 0–100%.
4-20mA
MG16H202
Programming Guide
6-50 Terminal 42 Output
Option:
[145]
[150]
[184]
[185]
6-51 Terminal 42 Output Min Scale
Range:
0 %
*
200 %]
6-52 Terminal 42 Output Max Scale
Range:
100
% 200
*
%]
Example 1:
Variable value = output frequency, range = 0–100 Hz.
Range needed for output = 0–50 Hz.
Output signal 0 mA or 4 mA is needed at 0 Hz (0% of
range). Set parameter 6-51 Terminal 42 Output Min Scale to
0%.
Output signal 20 mA is needed at 50 Hz (50% of range).
Set parameter 6-52 Terminal 42 Output Max Scale to 50%.
Danfoss A/S © 05/2016 All rights reserved.
Function:
Ext. CL 3 0–100%.
4-20mA
Max Out Fr
4-20 mA
Mirror AI53 mA
Mirror AI54 mA
Function:
[0 - Scale for the minimum output (0 mA or 4 mA)
of the analog signal at terminal 42.
Set the value to be the percentage of the full
range of the variable selected in
parameter 6-50 Terminal 42 Output.
Function:
[0 - Scale for the maximum output (20 mA) of the
analog signal at terminal 42.
Set the value to be the percentage of the full
range of the variable selected in
parameter 6-50 Terminal 42 Output.
Current
(mA)
20
0/4
0% Analogue Analogue
output Output
Min Scale Max Scale
par. 6-51 par. 6-52
Illustration 3.31 Output Current vs Reference
Variable
It is possible to obtain a value lower than 20 mA
at full scale by programming values >100% by
using a formula as follows:
20 mA/desired maximum current × 100 %
20 mA
i . e . 10mA: × 100 % = 200 %
10 mA
3 3
100% Variable for
output
example:
Speed (RPM)
83