Off3 Torque Limits - Siemens SINAMICS S120 Function Manual

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7.13 OFF3 torque limits

OFF3 torque limits

If the torque limits are externally specified (e.g. tension controller), then the drive can only be

stopped with a reduced torque. If stopping in the selected time p3490 of the infeed has not

been completed, the infeed shuts down and the drive coasts down.

In order to avoid this, there is a binector input (p1551), that for a LOW signal, activates the

torque limits p1520 and p1521. This means that the drive can brake with the maximum

torque by interconnecting the signal OFF 3 (r0899.5) to this binector.

Function diagrams (see SINAMICS S120/S150 List Manual)

Overview of important parameters (see SINAMICS S120/S150 List Manual)

Servo control - Motoring/generating torque limit

Servo control - Upper/lower torque limit

Vector control - Upper/lower torque limit

Torque limit, upper/motoring

Torque limit, lower/regenerative

Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4

Drive functions

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