Mitsubishi Electric FR-A700 Instruction Manual page 298

Torque control by real sensorless vector control, vector control
Use the speed command for speed control (Pr. 807 = 0, initial value)
● Set the speed limit in the same method as speed setting for speed control (speed setting
by the PU (FR-DU07/FR-PU07/FR-PU04), multi-speed setting, options, etc.)
● According to the acceleration time set in Pr. 7 "Acceleration time", the limit level is increased
from 0Hz upon turning on of the start signal, and when the start signal turns off, the speed
limit level is decreased from the then speed limit level to the DC injection brake operation
speed in Pr. 10 to a stop in accordance with the deceleration time set in Pr. 8 "Deceleration
time".
Forward rotation
Speed
setting value
during speed
control
Reverse rotation
STF (STR)
NOTES When the above speed limit command is greater than the Pr. 1 "Maximum frequency" value,
the speed limit value is the Pr. 1 "Maximum frequency" value, and when the speed limit com-
mand is less than the Pr. 2 "Minimum frequency" value, the speed limit value is the Pr. 2
"Minimum frequency" value. Similarly when the speed limit command is smaller than Pr. 13
"Starting frequency", the speed limit value is 0Hz.
When speed limit is to be made using analog input, perform calibration of the analog input
terminal 1, 2 and 4. (Refer to section 6.20.6.)
b
CAUTION:
When speed limit is to be made using the analog command (terminal 1, 2, 4), turn off
the external signals (RH, RM, RL). If any of external signals (RH, RM, RL) is on, multi-
speed limits are made valid.
6 - 118
The speed setting value is
Speed
a speed limit value.
Pr. 7
ON
Fig. 6-31:
Use the speed command for speed control
Pr. 8
Time
Torque
controllable range
OFF
Parameter
I001532E