Danfoss VLT AutomationDrive FC 302 Programming Manual page 108

Parameter Descriptions
6-70 Terminal X45/1 Output
Option:
[136] Power 4-20
mA
[137] Speed 4-20
3 3
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
[142] Bus ctrl. 4-20
mA, timeout
[150] Max Out Freq
4-20 mA
6-71 Terminal X45/1 Output Min Scale
Range:
0.00% [0.00 -
*
200.00%]
6-72 Terminal X45/1 Output Max Scale
Range:
100% [0.00 -
*
200.00%]
106
®
VLT
Function:
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 behaviour of the analog output
in case of bus time-out.
Parameter 4-54 Warning Reference Low
defines the behaviour of the analog output
in case of bus time-out.
In relation to parameter 4-19 Max Output
Frequency.
Function:
Scale the minimum output of the selected
analog signal at terminal X45/1, as a
percentage of the maximum signal value.
E.g. if 0 mA (or 0 Hz) is desired at 25% of
the maximum output value, then
programme 25%. Scaling values up to
100% can never be higher than the
corresponding setting in 6-72 Terminal
X45/1 Max. Scale.
Function:
Scale the maximum output of the selected
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 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 (example where
desired max. output is 10 mA):
IRANGE mA
x 100%
IDESIRED MAX mA
mA
20 − 4
= x 100% = 160%
mA
10
AutomationDrive FC 301/302 Programming Guide
Current
[mA]
20
0/4
0% Analogue
output Min
Scale
par. 6-71
Illustration 3.43 Output Max Scale
6-73 Terminal X45/1 Output Bus Control
Range:
0.00% [0.00 - 100.00%] Holds the level of Analog Output 3
*
6-74 Terminal X45/1 Output Timeout Preset
Range:
0.00% [0.00 -
*
100.00%]
3.8.9 6-8* Analog Output 4 MCB 113
Parameters for configuring the scaling and limits for
analog output 4. Terminal X45/3 and X45/4. Analog
outputs are current outputs: 0/4 to 20 mA. Resolution on
analog output is 11 bit.
6-80 Terminal X45/3 Output
Option:
[0] No operation Same selections available as for 6-70 Terminal
*
MG33MI02 - Rev. 2013-11-20
Analogue 100% Variable for
Output Max output
Scale example:Speed
par. 6-72 [RPM]
Function:
(terminal X45/1) if controlled by bus.
Function:
Holds the preset level of Analog Output
3 (terminal X45/1).
In case of a bus timeout and a timeout
function is selected in 6-70 Terminal
X45/1 Output the output is preset to this
level.
Function:
Select the function of Terminal X45/3 as an
analog current output.
X45/1 Output