264 Rockwell Automation Publication 2198-UM004D-EN-P - December 2022
Chapter 10 Modes of Operation
Apply a Speed Limit
The maximum speed in each mode is determined by the internal parameter
ID160 (P1.055). This bi-directional speed limit is applied at the end of the
profile generation, so it limits speed regardless of mode or command source.
Speed limit is applicable only in torque mode (T) for controlling the motor
maximum speed. If using external analog voltage in torque mode, DI signals
are available and can be set to SPD0…SPD1 for motor speed limit selection
(internal parameters). You can calibrate the analog input max value to motor
rpm max speed. When parameter ID118 (P1.002) is set to 1, the speed limit
function is enabled. See the following timing diagram.
To set the speed limit, see the following diagram.
Table 99 - Relevant Parameters
Parameter Name
ID118 (P1.002) VelocityTorqueLimitAction
ID125 (P1.009) PresetVelocityCmd_Limit_1
ID126 (P1.010) PresetVelocityCmd_Limit_2
ID127 (P1.011) PresetVelocityCmd_Limit_3
ID160 (P1.055) MaximumSpeed
Select by I/O Connector DI.SPD0, DI.SPD1 signal
Vref
command)
(0)
PresetVelocityCmd_Limit_1
ID125 (P1.009)
PresetVelocityCmd_Limit_2
ID126 (P1.010)
Speed Limit
Command
PresetVelocityCmd_Limit_3
ID127 (P1.011)
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