When the setting is too long, the control is stable but the control response is delayed. When the
setting is too short, the response is quick but the control may be unstable. Adjust the setting
according to your control and response situation.
0: Set by Pr.11-37 (Forward Speed Limit) and Pr.11-38 (Reverse Speed
Limit)
1: Set by Pr.00-20 (Master Frequency Command (AUTO, REMOTE) Source)
and Pr.11-37, Pr.11-38
Speed limit function: when you use the torque control mode, if the torque command is greater
than the load, the motor accelerates until the motor speed equals the speed limit. At this time, it
switches to speed control mode to stop acceleration.
Pr.11-36 = 1:
When the torque command is positive, the forward speed limit is Pr.00-20 and the reverse
speed limit is Pr.11-38. When the torque command is negative, the forward speed limit is
Pr.11-37 and the reverse speed limit is Pr.00-20.
Example:
In an unwinding application, if the torque command direction is different from the motor
operating direction, the load drives the motor. In this case, the speed limit must be Pr.11-37
or Pr.11-38. Only in normal applications, that is when the motor drives the load and the
torque command is in the same direction as the speed limit, you can set the speed limit
according to Pr.00-20.
In torque control mode, the F page of keypad displays the present speed limit value. For details
on the keypad display, refer to the LED Function Description in Section 7-14 Digital Keypad
(optional).
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