Danfoss VLT AutomationDrive FC 301 Programming Manual page 120

Parameter Descriptions
6-70 Terminal X45/1 Output
Option:
[107] Speed 0-20
mA
3 3
[108] Torque ref.
0-20 mA
[109] Max. out freq
0-20 mA
[130] Output freq.
4-20 mA
[131] Reference
4-20 mA
[132] Feedback 4-20
mA
[133] Motor cur.
4-20 mA
[134] Torque % lim.
4-20 mA
[135] Torque %
nom 4-20 mA
[136] Power 4-20
mA
[137] Speed 4-20
mA
[138] Torque 4-20
mA
[139] Bus ctrl. 0-20
mA
[140] Bus ctrl. 4-20
mA
[141] Bus ctrl. 0-20
mA, timeout
118
®
VLT AutomationDrive FC 301/302
Function:
Taken from parameter 3-03 Maximum
Reference. 20 mA = value in
parameter 3-03 Maximum Reference.
Torque reference related to 160% torque.
In relation to parameter 4-19 Max Output
Frequency.
0 Hz = 4 mA, 100 Hz = 20 mA
Parameter 3-00 Reference Range [Min.-Max.]
0% = 4 mA; 100% = 20 mA
Parameter 3-00 Reference Range [-Max-Max.]
-100% = 4 mA; 0% = 12 mA; +100% = 20
mA
The value is taken from
parameter 16-37 Inv. Max. Current. The
inverter maximum current (160% current)
is equal to 20 mA.
Example: Inverter normal current (11 kW) =
24 A. 160% = 38.4 A. Motor normal current
= 22 A, readout 11.46 mA.
16 mA x 22 A
= 9 . 17 mA
38 . 4 A
In case the normal motor current is equal
to 20 mA, the output setting of
parameter 6-52 Terminal 42 Output Max
Scale is:
I x 100
38 . 4 x 100
VLT
Max = = 175 %
I 22
Motor
Norm
The torque setting is related to setting in
parameter 4-16 Torque Limit Motor Mode.
The torque setting is related to the motor
torque setting.
Taken from parameter 1-20 Motor Power
[kW].
Taken from parameter 3-03 Maximum
Reference. 20 mA = Value in
parameter 3-03 Maximum Reference.
Torque reference related to 160% torque.
An output value set from fieldbus process
data. The output works independently of
internal functions in the frequency
converter.
An output value set from fieldbus process
data. The output works independently of
internal functions in the frequency
converter.
Parameter 4-54 Warning Reference Low
defines the behavior of the analog output
in case of a fieldbus timeout.
Danfoss A/S © 02/2016 All rights reserved.
6-70 Terminal X45/1 Output
Option: Function:
[142] Bus ctrl. 4-20 Parameter 4-54 Warning Reference Low
mA, timeout defines the behavior of the analog output
in case of a fieldbus timeout.
[150] Max. out freq In relation to parameter 4-19 Max Output
4-20 mA Frequency.
6-71 Terminal X45/1 Output Min. Scale
Range: Function:
0.00% [0.00 - Scale the minimum output of the selected
*
200.00%] analog signal at terminal X45/1 as a
percentage of the maximum signal value.
For example, if 0 mA (or 0 Hz) is required
at 25% of the maximum output value, then
program 25%. Scaling values up to 100%
can never exceed the corresponding setting
in parameter 6-72 Terminal X45/1 Max. Scale.
6-72 Terminal X45/1 Output Max. Scale
Range: Function:
100% [0.00 - Scale the maximum output of the selected
*
200.00%] analog signal at terminal X45/1. Set the value
to the maximum value of the current signal
output. Scale the output to give a current
lower than 20 mA at full scale, or 20 mA at
an output below 100% of the maximum
signal value. If 20 mA is the required output
current at a value between 0–100% of the
full-scale output, program the percentage
value in the parameter, for example 50% =
20 mA. If a current 4–20 mA is required at
maximum output (100%), calculate the
percentage value as follows (example where
required maximum output is 10 mA):
I mA
RANGE
I mA
DESIRED MAX
20 − 4 mA
= x 100 % = 160 %
10 mA
Current
[mA]
20
0/4
0% Analogue Analogue
output Min Output Max
Scale Scale
par. 6-71 par. 6-72
Illustration 3.45 Output Maximum Scale
x 100 %
100% Variable for
output
example:Speed
[RPM]
MG33ML02