Chapter 12 Description of Parameter Settings
MH300
Speed Limit Selection
Default: 0
Settings 0: Pr.11-37 (forward speed limit) and Pr.11-38 (reverse speed limit)
1: Speed limit source is Pr.00-20 (master frequency command source), and
Pr.11-37 / Pr.11-38
2: Pr.00-20 (master frequency command source)
3: Speed limit source is the linear speed of tension control
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.
For example:
In an unwind application, the torque command direction is different from the motor
operating direction, and this indicates that the load drives the motor. The speed limit must
be Pr.11-37 or Pr.11-38. In normal applications, when the motor drives the load and the
torque command is in the same direction as the speed limit, only then you can set the
speed limit according to Pr.00-20.
For details on the keypad display, refer to the LED Function Description in Chapter10 “Digital
Keypad”. In torque control mode, the F page of keypad displays the present speed limit value.
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