Danfoss VLT AutomationDrive FC 300 Programming Manual page 106

Parameter Descriptions
6-70 Terminal X45/1 Output
Option:
[133] Motor cur.
4-20 mA
3 3
[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
[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%]
104
®
VLT
Function:
Value is taken from 16-37 Inv. Max. Current.
Inverter max. current (160% current) is equal
to 20 mA.
Example: Inverter norm current (11 kW) = 24
A. 160% = 38.4 A. Motor norm current = 22
A Read-out 11.46 mA.
mA x 22 A
16
mA
= 9.17
38.4 A
In case the norm motor current is equal to
20 mA, the output setting of 6-52 Terminal
42 Output Max Scale is:
I VLT x 100
Max 38.4 x 100
= = 175 %
I Motor 22
Norm
The torque setting is related to setting in
4-16 Torque Limit Motor Mode.
The torque setting is related to the motor
torque setting.
Taken from 1-20 Motor Power [kW]
Taken from 3-03 Maximum Reference. 20 mA
= Value in 3-03 Maximum Reference.
Torque reference related to 160% torque.
An output value set from fieldbus process
data. The output will work independently of
internal functions in the frequency converter.
An output value set from fieldbus process
data. The output will work independently of
internal functions in the frequency converter.
4-54 Warning Reference Low defines the
behaviour of the analog output in case of
bus time-out.
4-54 Warning Reference Low defines the
behaviour of the analog output in case of
bus time-out.
In relation to 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.
MG33MG02 - VLT
AutomationDrive Programming Guide
6-72 Terminal X45/1 Output Max Scale
Range:
100% [0.00 -
*
200.00%]
Current
[mA]
20
0/4
0% Analogue
output Min
Scale
par. 6-71
Illustration 3.44 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.
®
is a registered Danfoss trademark
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):
I RANGE mA
x 100 %
I DESIRED MAX mA
20 − 4 mA
x 100 % = 160 %
=
mA
10
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 will preset to
this level.