Mitsubishi Electric FR-V500 Series Instruction Manual page 45

Torque control operation
4.2.6 Speed limit
Set the speed limit value to prevent the motor from over speeding due to a smaller load torque than the torque
command value.
Parameter
807 Speed limit selection
808 Forward rotation speed control
809 Reverse rotation speed control
Select the speed limit input method using Pr. 807.
Speed Limit Input
Pr. 807 Setting
0 Same method as speed
(factory setting) setting for speed control
Pr. 808 Forward rotation
speed limit
1
Pr. 809 Reverse rotation
speed limit
Forward/reverse rotation
speed limit
2 (analog polarity
switchover speed limit)
(terminal 1 analog input)
Speed limit
input selection
Speed setting for
0
speed control
Forward, reverse rotation
1
speed limit parameter
2
Forward/reverse rotation
speed limit
(analog polarity switchover
speed limit)
Factory
Name
Setting
1500r/min
Method
• Speed setting from the control panel
• External analog command (terminal 1, 2)
• Multi-speed command
• Option (FR-V5AX etc.)
• For both PU and external operations, the speed limit changes according to
the acceleration/deceleration time. (Refer to page 43)
According to the rotation direction, set the speed limit in forward and reverse
rotation directions individually. When the reverse rotation speed limit is 9999,
the setting is the same as that of the torque limit in forward rotation direction.
( Refer to the Instruction Manual (detailed).)
The analog voltage of the terminal 1 input is used to make speed limit. For 0 to
10V input, set the forward rotation speed limit. (The reverse rotation speed limit
is Pr. 1 "maximum speed".) For -10 to 0V input, set the reverse rotation speed
limit. (The forward rotation speed limit is Pr. 1 "maximum speed".) The
maximum speed of both the forward and reverse rotations is Pr. 1 "maximum
speed". When terminal 1 input is selected, set "5" in Pr. 868 "terminal 1
function assignment".
Use Pr. 917 or Pr. 918 to calibrate the terminal 1.
( Refer to the Instruction Manual (detailed).)
Speed feedback value < speed limit value
Torque command
+
+
Speed feedback value
-
Setting Range
0 0, 1, 2
0 to 3600r/min
9999 0 to 3600r/min, 9999
Operation
+
-
Speed control
(proportional control)
speed limit value
42
Torque
Motor
control
Encoder