Off3 Torque Limits - Siemens SINAMICS S120 Function Manual

4.19

OFF3 torque limits

Description
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, acti-
vates 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.
Fig. 4-15
Function diagram overview (refer to the List Manual)
S 5620
S 6620
Overview of important parameters (refer to the List Manual)
S p1520
S p1521
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
Torque limits OFF3
Torque limits, motoring/regenerating
Upper/lower torque limit
Torque limit, upper/motoring
Torque limit, lower/regenerating
Extended Functions
OFF3 torque limits
4-229