Mitsubishi Electric FR-A800, Instruction Manual

Page: 246 / 1042

Control method Parameters
5 - 66
●
Functions of the terminal 4 under different control modes
Real sensorless vector control (Pr. 800 = "12"), vector control (Pr. 800 = "2")
Vector control (Pr. 800 = "4"), PM sensorless vector control (Pr. 800 = "14")
Vector control (Pr. 800 = "5")
#
Enabled under vector control
,
Disabled when Pr. 868="1".
$
Disabled when Pr. 868="4".
⎯
: No function
Pr. 858
setting
Speed control/torque control
switchover
Speed control/position control
switchover
Position control/torque control
switchover
Speed control
(MC signal-OFF)
Torque control
(MC signal-ON)
Speed control
(MC signal-OFF)
Position control
(MC signal-ON)
Position control
(MC signal-OFF) Torque control
(MC signal-ON)
0
(initial
value)
Speed command
(AU signal-ON)
Speed limit
(AU signal-ON)
Speed command
(AU signal-ON)
⎯ ⎯
Speed limit
(AU signal-ON)
1
Magnetic flux
command
# ,
Magnetic flux
command
# ,
Magnetic flux
command
# ,
Magnetic flux
command
# ,
Magnetic flux
command
,
Magnetic flux
command
,
4
Torque limit
(Pr. 810 = 1)
$
⎯
Torque limit
(Pr. 810 = 1)
$
Torque limit
(Pr. 810 = 1)
$
Torque limit
(Pr. 810 = 1)
$
⎯
9999
⎯ ⎯ ⎯ ⎯ ⎯ ⎯
Tab. 5-23: Functions of the terminal 4 under different control modes
NOTES 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 con-
trol and position control occurs when the output frequency reaches Pr. 865 "Low speed detection"
or lower with no position command provided.
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 selection) => page 5-422
Pr. 450 Second applied motor => page 5-434
Pr. 804 Torque command source selection => page 5-132
Pr. 807 Speed limit selection => page 5-136
Pr. 810 Torque limit input method selection => page 5-84
Pr. 858 Terminal 4 function assignment => page 5-394
Pr. 868 Terminal 1 function assignment => page 5-394