Danfoss VLT AutomationDrive FC 301 Programming Manual page 169

Parameter Descriptions
6-50 Terminal 42 Output
Option: Function:
[137] Speed Taken from parameter 3-03 Maximum
4-20mA Reference. 20 mA = value in
parameter 3-03 Maximum Reference.
[138] Torque Torque reference related to 160% torque.
4-20mA
[139] Bus ctrl. 0-20 An output value set from fieldbus process
mA data. The output works independently of
internal functions in the frequency
converter.
[140] Bus ctrl. 4-20 An output value set from fieldbus process
mA data. The output works independently of
internal functions in the frequency
converter.
[141] Bus ctrl Parameter 4-54 Warning Reference Low
0-20mA t.o. defines the behavior of the analog output
in case of fieldbus timeout.
[142] Bus ctrl Parameter 4-54 Warning Reference Low
4-20mA t.o. defines the behavior of the analog output
in case of fieldbus timeout.
[147] Main act val
0-20mA
[148] Main act val
4-20mA
[149] Torque % Analog output at 0 torque is 12 mA.
lim 4-20mA Motoring torque increases the output
current to maximum torque limit 20 mA (set
in parameter 4-16 Torque Limit Motor Mode).
Generating torque decreases the output to
torque limit in generator mode (set in
parameter 4-17 Torque Limit Generator Mode)
Example: Parameter 4-16 Torque Limit Motor
Mode = 200% and parameter 4-17 Torque
Limit Generator Mode = 200%. 20 mA =
200% motoring and 4 mA = 200%
generating.
0mA 4mA
Par 4-17
(200%)
Illustration 3.44 Torque Limit
[150] Max Out Fr 0 Hz = 0 mA, parameter 4-19 Max Output
4-20mA Frequency = 20 mA.
[158] Motor Volt.
0-20mA
[159] Motor Volt.
4-20mA
6-51 Terminal 42 Output Min Scale
Range: Function:
0 % [0 - 200 %] Scale for the minimum output
*
(0 mA or 4 mA) of the analog
signal at terminal 42.
M0013101
Programming Guide
20 mA/desired maximum current x 100 %
i . e . 10 mA :
12 mA 20 mA
0% Torque Par 4-16
(200%)
Danfoss A/S © 10/2019 All rights reserved.
6-51 Terminal 42 Output Min Scale
Range: Function:
Set the value to be the percentage
of the full range of the variable
selected in parameter 6-50 Terminal
42 Output.
6-52 Terminal 42 Output Max Scale
Range: Function:
100 % [0 - 200 %] Scale the maximum output of the
*
selected analog signal at terminal
42. 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 0–100% of the full-scale
output, program the percentage
value in the parameter, that is 50%
= 20 mA. If a current 4–20 mA is
required at maximum output
(100%), calculate the percentage
value as follows:
20
x 100 = 200 %
10
Current
(mA)
20
0/4
0% Analog Analog
output output
min scale max scale
par. 6-51 par. 6-52
Illustration 3.45 Output Maximum. Scale
6-53 Term 42 Output Bus Ctrl
Range: Function:
0 % [0 - 100 %] Holds the level of output 42 if
*
controlled by bus.
6-54 Terminal 42 Output Timeout Preset
Range: Function:
0 % [0 - 100 %] Holds the preset level of output 42.
*
If a timeout function is selected in
parameter 6-50 Terminal 42 Output,
the output is preset to this level if a
fieldbus timeout occurs.
Variable for
100%
output
example:
Speed (RPM)
167
3 3