Mitsubishi Electric FR-A800 Series Instruction Manual page 228

• 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 follows:
• Functions of the terminal 1 under different control modes
Pr.868
setting
Speed control (MC
signal-OFF)
0 (initial Auxiliary speed
value) setting
Magnetic flux
1
command
Regenerative
2 torque limit
(Pr.810 = "1")
3 —
Torque limit
4
(Pr.810 = "1")
5 —
6 —
9999 —
• Terminal 4 functions by control
Pr.858
setting
Speed control (MC
signal-OFF)
0 (initial Speed command
value) (AU signal-ON)
Magnetic flux
1
command
Torque limit
4
(Pr.810 = "1")
9999 —
—: No function
*1 Real sensorless vector control (Pr.800 = "12"), vector control (Pr.800 = "2")
*2 Vector control (Pr.800 = "4"), PM sensorless vector control (Pr.800 ="14")
*3 Vector control (Pr.800 = "5")
*4 This function is valid under vector control.
*5 Invalid when Pr.868 = "1".
*6 Invalid when Pr.868 = "4".
NOTE
• Switching between the speed control and the torque control is always enabled regardless of the motor status: in a stop, in
running, or in DC injection brake (during pre-excitation).
• During operation, switching between speed control and position control or between torque control and position control occurs
when the output frequency reaches Pr.865 Low speed detection or lower with no position command given.
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.178 to Pr.189 (Input terminal function
Pr.450 Second applied
Pr.804 Torque command source
Pr.807 Speed limit
Pr.810 Torque limit input method
Pr.858 Terminal 4 function assignment, Pr.868 Terminal 1 function
Downloaded from ManualsNet.com
Speed control/torque control
*1
switchover
Torque control
(MC signal-ON)
Speed limit
assistance
Magnetic flux
*4 *4
command
—
Torque command
(Pr.804 = "0")
Torque command
(Pr.804 = "0")
Forward/reverse
rotation speed limit
(Pr.807 = "2")
—
—
Speed control/torque control
*1
switchover
Torque control
(MC signal-ON)
Speed limit (AU
signal-ON)
Magnetic flux
*4*5 *4*5
command
—
*6
—
selection)page 521
motorpage 528
selectionpage 283
selectionpage 287
selectionpage 245
search engine
Speed control/position control
*2
switchover
Speed control (MC Position control
signal-OFF) (MC signal-ON)
Auxiliary speed
—
setting
Magnetic flux Magnetic flux
*4 *4
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 —
— —
Speed control/position control
*2
switchover
Speed control (MC Position control
signal-OFF) (MC signal-ON)
Speed command
—
(AU signal-ON)
Magnetic flux Magnetic flux
*4*5
command command
Torque limit Torque limit
*6
(Pr.810 = "1") (Pr.810 = "1")
— —
assignmentpage 500
Position control/torque control
switchover
Position control
(MC signal-OFF)
—
Magnetic flux
command
Regenerative
torque limit
(Pr.810 = "1")
—
Torque limit
(Pr.810 = "1")
—
—
—
Position control/torque control
switchover
Position control
(MC signal-OFF)
—
Magnetic flux
*4*5 *5
command
Torque limit
*6 *6
(Pr.810 = "1")
—
5.2 Control method
1
*3
2
Torque control
(MC signal-ON)
Speed limit
3
assistance
Magnetic flux
command
4
—
Torque command
(Pr.804 = "0")
5
Torque command
(Pr.804 = "0")
Forward/reverse
rotation speed limit
6
(Pr.807 = "2")
—
—
7
*3
Torque control 8
(MC signal-ON)
Speed limit (AU
*4
signal-ON)
9
Magnetic flux
*5
command
—
10
—
227
5. PARAMETERS