Analog Input Compensation - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

• Functions of terminal 4 under different controls
Pr.858
Advanced magnetic flux vector
setting
0
Frequency command
(initial
(AU signal-ON)
value)
1 —
Stall prevention operation level
4
input
9999 —
—: No function
*1 This function is valid under Vector control.
*2 Invalid when Pr.868 = "1".
*3 Invalid when Pr.868 = "4".
NOTE
• When Pr.868 = "1" (magnetic flux command) or "4" (stall prevention / torque limit), the terminal 4 function is enabled regardless
of the ON/OFF state of the AU signal.
Parameters referred to
Advanced magnetic flux vector
Real sensorless vector controlpage 215
Pr.804 Torque command source
Pr.807 Speed limit selectionpage 274
Pr.810 Torque limit input method
Pr.840 Torque bias selectionpage 255

5.12.3 Analog input compensation

The analog input for multi-speed operation or speed setting (main speed) through terminal 2 or 4 can be compensated by
adding an input, or terminal 2 can be used for an auxiliary input to compensate the analog input at a fixed ratio using the
override function.
Pr.
73
Analog input selection
T000
Terminal 1 added
242
compensation amount
T021
(terminal 2)
Terminal 1 added
243
compensation amount
T041
(terminal 4)
252
Override bias
T050
253
Override gain
T051
 Compensation by addition (Pr.242, Pr.243)
Auxiliary input
0 to 10V( 5V)
Example of addition compensation connection
• A compensation signal can be added to the main speed setting for such as synchronous or continuous speed control
operation.
478
5. PARAMETERS
5.12 (T) Multi-function input terminal parameters
V/F control Real sensorless vector control, Vector control, PM sensorless vector control
control
Speed command (AU signal-
ON)
Magnetic flux command
Torque limit (Pr.810 = 1)
—
controlpage 222
selectionpage 270
selectionpage 235
Name Initial value
1
100%
75%
50%
150%
Forward
Inverter
rotation
STF
SD
10
2
5
1
Speed control Torque control
Speed limit (AU signal-ON) —
*1*2
Magnetic flux command
*3
—
—
Setting range
0 to 3, 6, 7, 10 to 13, 16, 17 Compensation by addition
4, 5, 14, 15
0 to 100%
0 to 100%
0 to 200%
0 to 200%
Position control
*1*2
Magnetic flux command
Torque limit (Pr.810 = 1)
—
Description
Compensation using the override function
Set the percentage of addition when terminal 2
is used to set the main speed.
Set the percentage of addition when terminal 4
is used to set the main speed.
Set bias compensation for the override
function.
Set gain compensation for the override
function.
*1*2
*3