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Frequency/torque setting by analog
input (terminal 1, 2, 4)
4.21 Frequency/torque setting by analog input (terminal 1, 2, 4)
Purpose
Function assignment of analog input
terminal
Selection of voltage/current input
(terminal 1, 2, 4) Perform forward/
reverse rotation by analog input
Adjust the main speed by analog
auxiliary input
Noise elimination at the analog input
Adjustment (calibration) of analog
input frequency and voltage (current)
Adjustment (calibration) of analog
input torque and voltage (current)
Analog input (current) status check
4.21.1 Function assignment of analog input terminal (Pr. 858, Pr. 868)
Function assignment of terminal 1 and terminal 4 of analog input can be selected and changed by parameter.
Parameter
Number
858
Terminal 4 function assignment
868
Terminal 1 function assignment
For the terminal 1 and terminal 4 used for analog input, frequency (speed) command, magnetic flux command,
torque command, etc. can be selected.
Functions change according to the control mode as in the table below.
Terminal 1 function according to control
V/F Control,
Pr. 868
Advanced Magnetic
Setting
Flux Vector Control
0
Frequency setting auxiliary
(Initial value)
1
2
3
Stall prevention operation
4
level input
(Pr. 810 = 1)
5
6
9999
Terminal 4 function according to control
V/F Control,
Pr. 858
Advanced Magnetic Flux
Setting
Vector Control
0
Frequency command
(Initial value)
(AU signal-ON)
1
Stall prevention operation
4
level input
(Pr. 810 = 1)
9999
:No function
* This setting is valid under vector control.
290
Terminal 1 and terminal 4 function
assignment
Analog input selection
Analog auxiliary input and
compensation (added
compensation and override
function)
Input filter
Bias and gain of frequency setting
voltage (current)
Bias and gain of torque setting
voltage (current)
4mA input check
Name
Initial Value
Real Sensorless Vector Control, Vector Control
Speed control
Speed setting auxiliary
Magnetic flux command *
Regenerative torque limit
(Pr. 810 = 1)
Torque limit (Pr. 810 = 1)
Torque bias input
(Pr. 840 = 1, 2, 3) *
Real Sensorless Vector Control, Vector Control
Speed control
Speed command
(AU signal-ON)
Magnetic flux command *
Torque limit (Pr. 810 = 1)
Parameter that must be Set
Pr. 73, Pr. 242, Pr. 243,
Pr. 74, Pr. 822, Pr. 826,
Pr. 832, Pr. 836, Pr. 849
Pr. 125, Pr. 126, Pr. 241,
C2 to C7 (Pr. 902 to Pr. 905)
C12 to C15 (Pr. 917 to Pr. 918)
Pr. 241, C16 to C19 (Pr. 919
to Pr. 920), C38 to C41 (Pr.
Setting Range
0
0, 1, 4, 9999
0
0 to 6, 9999
Torque control
Speed limit auxiliary
Magnetic flux command *
Torque command
(Pr. 804 = 0)
Torque command
(Pr. 804 = 0)
Forward/reverse rotation
speed limit (Pr. 807 = 2)
Torque control
Speed limit
(AU signal-ON)
Magnetic flux command *
Refer to Page
Pr. 858, Pr. 868
Pr. 73, Pr. 267
Pr. 252, Pr. 253
932 to Pr. 933)
Pr. 573
Description
Select the terminal 4 function.
(Refer to the following list)
Select the terminal 1 function.
(Refer to the following list)
Vector Control
Position control
Magnetic flux command
Regenerative torque
limit (Pr. 810 = 1)
Torque limit (Pr. 810 = 1)
Vector Control
Position control
Magnetic flux command
Torque limit (Pr. 810 = 1)
290
291
295
297
299
305
310
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