Danfoss VLT AutomationDrive EZ FC 321 Programming Manual page 186

VLT® AutomationDrive EZ FC 321
Programming Guide
Option Name
[142] Bus ctrl 4-20mA
t.o.
[147] Main act val
0-20mA
[148] Main act val
4-20mA
[149] Torque % lim
4-20mA
[150] Max Out Fr
4-20mA
[158] Motor Volt.
0-20mA
[159] Motor Volt.
4-20mA
Parameter 6-51 Terminal 42 Output Min Scale
Table 360: Parameter 6-51 Terminal 42 Output Min Scale
6-51 Terminal 42 Output Min Scale
Default value: 0%
Conversion index: -2
Scale for the minimum output (0 mA 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 parameter 6-50 Terminal 42 Output.
Parameter 6-52 Terminal 42 Output Max Scale
Table 361: Parameter 6-52 Terminal 42 Output Max Scale
6-52 Terminal 42 Output Max Scale
Default value: 100%
Conversion index: -2
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 pa-
rameter, that is 50% = 20 mA. If a current 4–20 mA is required at maximum output (100%), calculate the percentage value as follows:
20 mA/desired maximum current × 100 % = 10 mA:
186 | Danfoss A/S © 2021.08
Description
Parameter 4-54 Warning Reference Low defines the behavior of the analog output in case of fieldbus
timeout.
Analog output at 0 torque is 12 mA. 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 Genera-
tor Mode = 200%. 20 mA = 200% motoring and 4 mA = 200% generating.
0 Hz = 0 mA, parameter 4-19 Max Output Frequency = 20 mA.
Parameter type: Range, 0 - 200%
Data type: Int16
Parameter type: Range, 0 - 200%
Data type: Int16
20
× 100 = 200 %
10
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU373327181955en-000101 / 130R1208