Mitsubishi FR-A800

Torque control under Real sensorless vector control and vector control
220
PARAMETERS
Using the speed command during speed control (Pr.1113="9999",
Pr.807="0").
• Speed limit is set by the same method as speed setting during speed control. (Speed setting by PU (operation panel/
parameter unit), multi-speed setting, plug-in option, etc.)
• At turn-ON of the start signal, the speed limit is raised from 0 Hz in accordance with the Pr.7 Acceleration time. At turn-
OFF of the start signal, the speed limit is lowered from the speed at that point to the Pr.10 DC injection brake operation
frequency in accordance with the Pr.8 Deceleration time. Then the motor is stopped.
NOTE
• The second and third acceleration/deceleration time can be set.
• When the speed limit command is larger than the Pr.1 Maximum frequency setting value, speed limit value becomes the
Pr.1 setting value. When the speed limit command is smaller than Pr.2 Minimum frequency setting value, speed limit value
becomes the Pr.2 setting value. Also when the speed limit command is smaller than the Pr.13 Starting frequency, the speed
limit value becomes 0 Hz.
• To perform speed limit by analog input, calibrate analog input terminals 1, 2 and 4. (Refer to page 415.)
• To use analog inputs to perform speed control, turn the external signals (RH, RM, RL) OFF. If any of the external signals (RH,
RM, RL) are ON, speed limit by multi-speed is enabled.
Setting separately for forward and reverse rotation (Pr.1113="9999",
Pr.807="1", Pr.808, Pr.809)
• Set the speed limit by Pr.808 Forward rotation speed limit/speed limit for forward rotation, and by Pr.809 Reverse
rotation speed limit/reverse-side speed limit for reverse rotation.
• When Pr.809="9999 (initial value)", speed limit is determined by the setting value of Pr.808 for both forward and reverse
rotations.
STF(STR) ON OFF
Speed
Forward rotation
Speed setting
value during
speed control
Pr.7
Time
Torque controllable
range
The speed setting
value is the speed
limit value.
Pr.8
Reverse rotation
Pr.809
Speed
Reverse rotation
Pr.808
Torque controllable range
150 150
Output torque
(%)
0
Pr.7 Pr.8
STF(STR) ON OFF
Speed limit
Speed limit
Speed limit
Speed limit
Forward rotation
Pr.808
Pr.809
Pr.809
Pr.809
Torque controllable range
Torque controllable range
Torque controllable range
Time
Time
Time
Forward rotation
Reverse rotation