Mitsubishi Electric 800 Series Instruction Manual page 156

Speed control under Real sensorless vector control, vector control, PM sensorless vector
Pr. Name
811 Set resolution
D030 switchover
812 Torque limit level
H701 (regeneration)
813 Torque limit level (3rd
H702 quadrant)
814 Torque limit level (4th
H703 quadrant)
815
Torque limit level 2
H710
816 Torque limit level during
H720 acceleration
817 Torque limit level during
H721 deceleration
858 Terminal 4 function
T040 assignment
868 Terminal 1 function
T010 assignment
874
OLT level setting
H730

When changing from V/F control or Advanced magnetic flux vector control to Real sensorless vector control or vector control in FR-A860-00090
or lower, 150% changes to 200%.
NOTE
• The lower limit for the torque limit level under Real sensorless vector control is set to 30% even if a value lower than 30% is
set.
• Under PM sensorless vector control, the torque limit is not activated in a low-speed range with a rated frequency of less than
10%.
• Under PM sensorless vector control, the torque limit level is reduced inversely proportional to the output frequency in the
constant output range of the rated motor frequency or higher.
Block diagram of torque limit
Speed command +
Initial
value
0
1
0
10
11
0 to 400%
9999
9999
0 to 400%
9999
9999
0 to 400%
9999
9999
0 to 400%
9999
9999
0 to 400%
9999
9999
0 to 400%
9999
9999
0 0, 1, 4, 9999
0 0 to 6, 9999
150% 0 to 400%
<Vector control>
Speed control
-
Setting
range
Speed setting, running speed
monitor increments 1 r/min
Speed setting, running speed
monitor increments 0.1 r/min
Speed setting, running speed
monitor increments 1 r/min
Speed setting, running speed
monitor increments 0.1 r/min
Set the torque limit level for forward rotation regenerative
driving.
Limit using Pr.22 or the analog terminal values.
Set the torque limit level for reverse rotation power driving.
Limit using Pr.22 or the analog terminal values.
Set the torque limit level for reverse rotation regenerative
driving.
Limit using Pr.22 or the analog terminal values.
When the torque limit selection (TL) signal is ON, Pr.815 is
the torque limit value regardless of Pr.810.
The torque limit selected in Pr.810 is valid.
Set the torque limit value during acceleration.
The same torque limit as constant speed.
Set the torque limit value during deceleration.
The same torque limit as constant speed.
The torque limit level can be changed with setting value "4"
and the signal to terminal 4.
The torque limit level can be changed with setting value "4"
and the signal to terminal 1.
A trip can be set for when the torque limit is activated and the
motor stalls. Set the output at which to activate the trip.
Torque limit
Iq current control
control
Description
Torque limit setting
increments 0.1%
Torque limit setting
increments 0.01%
IM
Encoder
PARAMETERS
5
155