Danfoss VLT AutomationDrive FC 300 Programming Manual page 103

Parameter Descriptions
6-50 Terminal 42 Output
Option: Function:
[142] Bus ctrl 4-54 Warning Reference Low defines the
4-20mA t.o. behaviour of the analog output in case of
bus time-out.
[149] Torque % Analog output at zero torque = 12 mA.
lim 4-20mA Motoric torque will increase the output
current to max torque limit 20 mA (set in
4-16 Torque Limit Motor Mode).
Generative torque will decrease the output to
torque limit Generator Mode (set in
4-17 Torque Limit Generator Mode)
Ex: 4-16 Torque Limit Motor Mode: 200% and
4-17 Torque Limit Generator Mode: 200%. 20
mA = 200% Motoric and 4 mA = 200%
Generatoric.
0mA 4mA
Par 4-17
(200%)
Illustration 3.42
[150] Max Out Fr 0 Hz = 0 mA, 4-19 Max Output Frequency = 20
4-20mA mA.
6-51 Terminal 42 Output Min Scale
Range: Function:
0 % [0 - 200 Scale for the minimum output (0 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
6-50 Terminal 42 Output.
6-52 Terminal 42 Output Max Scale
Range: Function:
100 [0 - Scale the maximum output of the selected
% 200 %] 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 desired output current at a value between 0
- 100% of the full-scale output, programme the
percentage value in the parameter, i.e. 50% = 20
mA. If a current between 4 and 20 mA is desired
at maximum output (100%), calculate the
percentage value as follows:
mA / desired maximum current x 100 %
20
20
i . e . 10 mA : x 100 = 200 %
10
®
VLT AutomationDrive Programming Guide
12 mA 20 mA
0% Torque Par 4-16
(200%)
®
MG33MG02 - VLT is a registered Danfoss trademark
Current
(mA)
20
0/4
0% Analogue Analogue
output Output
Min Scale Max Scale
par. 6-93 par. 6-94
Illustration 3.43 Output Max Scale
6-53 Terminal 42 Output Bus Control
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.
*
In case of a bus timeout and a timeout
function is selected in 6-50 Terminal 42
Output the output will preset to this level.
6-55 Analog Output Filter
Option: Function:
The following readout analog parameters from selection
in 6-50 Terminal 42 Output have a filter selected when
6-55 Analog Output Filter is on:
Selection
Motor current (0 - I
max
Torque limit (0 - T )
lim
Rated torque (0 - T
nom
Power (0 - P )
nom
Speed (0 - Speed )
max
Table 3.21 Readout Analog Parameters
[0] Off Filter off
[1] On Filter on
3.8.7 6-6* Analog Output 2 MCB 101
Analog outputs are current outputs: 0/4 - 20 mA. Common
terminal (terminal X30/8) is the same terminal and
electrical potential for analog common connection.
Resolution on analog output is 12 bit.
100% Variable
for
output
example:
Speed
(RPM)
0-20 mA 4-20 mA
) [103] [133]
[104] [134]
) [105] [135]
[106] [136]
[107] [137]
101
3 3