Mitsubishi Electric FR-A820-00046 Instruction Manual page 272

Control method
Changing the control mode with external terminals (MC signal)
● To use ON/OFF of the MC signal to switch the control mode, set Pr. 800 or Pr. 451.
Refer to page 5-63 and set Pr. 800 or Pr. 451.
To input the MC signal, set "26" in any of Pr. 178 to Pr. 189 (input terminal function selection) to
assign the function.
● When using an analog input terminal (terminal 1, 4) for torque limit and torque command,
switching of the control mode changes the terminal function as shown below.
● Functions of the terminal 1 under different control modes
Pr. 868
setting
0
(initial
value)
1
2
3
4
5
6
9999
Tab. 5-22:
5 - 70
Speed control/torque control
switchover
Speed control Torque control
(MC signal-OFF) (MC signal-ON)
Speed setting Speed limit
assistance assistance
Magnetic flux Magnetic flux
command command
Regenerative
⎯
torque limit
(Pr. 810 = 1)
Torque
⎯
command
(Pr. 804 = 0)
Torque
Torque limit
command
(Pr. 810 = 1)
(Pr. 804 = 0)
Forward/reverse
⎯
rotation speed
limit (Pr. 807 = 2)
⎯ ⎯
⎯ ⎯
Functions of the terminal 1 under different control modes
Speed control/position control
switchover
Speed control Position control
(MC signal-OFF) (MC signal-ON)
Speed setting
⎯
assistance
Magnetic flux Magnetic flux
command command
Regenerative Regenerative
torque limit torque limit
(Pr. 810 = 1) (Pr. 810 = 1)
⎯ ⎯
Torque limit Torque limit
(Pr. 810 = 1) (Pr. 810 = 1)
⎯ ⎯
⎯
Torque bias
⎯ ⎯
Parameters
Position control/torque control
switchover
Position control Torque control
(MC signal-OFF) (MC signal-ON)
Speed setting
⎯
assistance
Magnetic flux Magnetic flux
command command
Regenerative
⎯
torque limit
(Pr. 810 = 1)
Torque
⎯
command
(Pr. 804 = 0)
Torque
Torque limit
command
(Pr. 810 = 1)
(Pr. 804 = 0)
Forward/reverse
⎯
rotation speed
limit (Pr. 807 = 2)
⎯ ⎯
⎯ ⎯