Mitsubishi Electric FR-V520-1.5K to 55K Instruction Manual page 43

Torque control operation
(1) Calibration of torque command No. 3 terminal
Refer to the chart on the right for the relationship
between torque setting input voltage and output
voltage. The torque setting input signal is in pro-
portion to the output torque. Note that the motor-
developed torque varies with the motor tempera-
ture.
Use Pr. 904 and Pr. 905 to adjust bias/gain of
the No. 3 terminal. (Refer to page 47.)
4.2.6 Speed restriction
Set the speed restriction value to prevent the motor from over speeding due to a smaller load torque than the torque
command value.
Parameter
807 Speed restriction selection
808 Forward rotation speed control
809 Reverse rotation speed control
Select the speed restriction input method using Pr. 807.
Speed Restriction
Pr. 807 Setting
Input Method
Same method as speed
0
setting for speed
(factory setting)
control
Pr. 808 Forward
rotation speed control
1
Pr. 809 Reverse
rotation speed control
Forward/reverse
rotation speed
restriction
(analog polarity
2
switchover speed
restriction)
(No. 1 terminal analog
input)
Speed setting for
0
speed restriction
1
orward, reverse rotation
peed restriction parameter
2
Forward/reverse rotation
speed restriction
(analog polarity switchover
speed restriction)
Name
1500r/min
• Speed setting from the operation panel
• External analog command (terminal 1, 2)
• Multi-speed command
• Option (FR-V5AX etc.)
For both PU and external operations, the speed restriction changes according to
the acceleration/deceleration time. (Refer to 40 page)
According to the rotation direction, set the speed restriction in forward and
reverse rotation directions individually. When the reverse rotation speed
restriction is 9999, the setting is the same as that of the torque restriction in
forward rotation direction.
( Refer to the Instruction Manual (detailed).)
The analog voltage of the No. 1 terminal input is used to make speed restriction.
For 0 to 10V input, set the forward rotation speed restriction. (The reverse
rotation speed restriction is Pr. 1 "maximum speed" .) For -10 to 0V input, set the
reverse rotation speed restriction. (The forward rotation speed restriction is Pr. 1
"maximum speed".) The maximum speed of both the forward and reverse
rotations is Pr. 1 "maximum speed". When No. 1 terminal input is selected, set
"5" in Pr. 868 "No. 1 terminal function assignment".
( Refer to the Instruction Manual (detailed).)
Speed feedback<speed restriction value
Torque command
Speed restriction
input selection
+
+
Speed feedback
-
Output torque
(Torque command)
-10V
Factory
Setting Range
Setting
0 0, 1, 2
0 to 3600r/min
9999 0 to 3600r/min, 9999
Operation
Speed control
(proportional control)
speed restriction value
39
150%
Gain
Pr. 905
Bias
Pr. 904
10V
0
-150%
+
Torque
control
-
Terminal 3
Motor
PLG