Variable torque limit Q1

The relevant settings for the variable torque limit are set in this configuration menu.

INFORMATION

The parameter group is not displayed until the additional function "Variable torque limit Q1 (2 PD)" is active.
Variable torque limit Q1 (2 PD)

This additional function activates the utilization of the control word for the torque limit. This control word can also be used to deactivate the speed monitoring and lag error monitoring.

The torque limit of the inverter in % nominal motor torque can be specified variably via process data. This value is limited by the "Torque" application limit or the "Minimum torque limit" parameter in the "Additional functions" menu.

If the specification of the torque limit via process data is 0%, the setting of the parameter "Use torque limits from profile value connection" in the "Additional functions" menu determines how the torque limit is interpreted via process data.

Use torque limits from profile value connection
  • Off
  • The variable torque limit via fieldbus (control word) is only effective in the following drive functions:
    • FCB 05 Speed control
    • FCB 09 Positioning control
    • FCB 12 Reference travel
  • A torque limit of 0% corresponds to a motor torque of 0%. The "Minimum torque limit" parameter is also taken into account.
  • On
  • The variable torque limit is additionally effective in the following drive functions:
    • FCB 02 Stop standard
    • FCB 13 Stop at application limit
    • FCB 14 Emergency stop
    • FCB 26 Stop at user-defined limits
  • A torque limit of 0% corresponds to the torque from the application limit. When the torque limit is > 0%, the minimum torque limit is taken into account.
Minimum torque limit

Limitation of the minimum possible torque limit via process data.