Mitsubishi Electric FR-E800 Series Instruction Manual page 119

• When the difference between the set speed and rotation speed is -2 Hz or less, the torque limit level during deceleration
Torque limit level during deceleration (Pr.817) activates.
Output
frequency
(Hz)
Set
frequency
Torque limit
level
Pr.816
Pr.817
 Changing the setting increments of the torque limit level (Pr.811)
• The setting increments of Pr.22 Torque limit level, Pr.801 Output limit level, and Pr.812 to Pr.817 Torque limit level
can be changed to 0.01% by setting Pr.811 Set resolution switchover = "10".
Pr.811 setting Torque limit setting increments
0 (initial value) 0.1%
10 0.01%
NOTE
• The internal resolution of the torque limit is 0.024% (100/2
• When Real sensorless vector control is selected, fractions below a resolution equivalent to 0.1% are rounded off even if Pr.811
= "10" is set.
 Changing the torque characteristic of the constant-power range (Pr.801,
Pr.803)
• For the torque limit operation, the torque characteristic can be changed between in the low-speed range and in the constant
power range.
Pr.803 setting Torque characteristic in low-speed range
0 (initial value) Torque rise
1 Constant torque
2 Constant torque
10 Constant torque
118
5. Speed Control
5.4 Setting the torque limit level
-2 Hz < set speed - rotation speed < 2 Hz
Acceleration Constant speed
1s
Torque limit set to Pr.810
Torque limit level
during acceleration
-2 Hz set speed - rotation speed
Deceleration
Torque limit level
during deceleration
12
), and fractions below this resolution are rounded off.
Torque characteristic in constant-power range
Torque characteristic
Constant motor output
Constant torque
Constant torque
Constant motor output
Time
Output limit
—
Disabled
Enabled
—