Siemens SINAMICS S120 Function Manual page 96

Servo control
4.5 Torque setpoint limitation
Properties
The connector inputs of the function are initialized with fixed torque limits. If required, the
torque limits can also be defined dynamically (during operation).
● A control bit can be used to select the torque limitation mode. The following alternatives
are available:
– Upper and lower torque limit
– Motor and regenerative torque limit
● Additional power limitation configurable
– Motor mode power limit
– Regenerative mode power limit
● The following factors are monitored by the current controller and therefore always apply in
addition to torque limitation:
– Stall power
– Maximum torque-generating current
● Offset of the setting values also possible (see "Example: Torque limits with or without
offset").
● The following torque limits are displayed via parameters:
– Lowest of all upper torque limits with and without offset
– Highest of all lower torque limits with and without offset
Fixed and variable torque limit settings
Table 4- 2 Fixed and variable torque limit settings
Selection
Mode
Fixed torque limit
Source for variable torque
limit
Source for variable scaling
factor of torque limit
Torque offset for torque
limit
96
Maximum upper or lower torque limits
p1400.4 = 0
Upper torque limit (as positive
value)
Lower torque limit (as negative
value)
Upper torque limit
Lower torque limit
Upper torque limit
Lower torque limit
Shifts the upper and lower
torque limits together
Torque limitation mode
Maximum motor or regenerative mode torque
limits p1400.4 = 1
p1520 Motor mode torque limit (as
positive value)
p1521 Regenerative mode torque limit (as
negative value)
p1522 Motor mode torque limit
p1523 Regenerative mode torque limit
p1528 Motor mode torque limit
p1529 Regenerative mode torque limit
p1532 Shifts the motor and regenerative
mode torque limits together
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
p1520
p1521
p1522
p1523
p1528
p1529
p1532
Drive functions