Efficient Networks Siemens Sinamics S120 - Manual (Page 73)

Servo control
3.5 Torque setpoint limitation
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
73
Fixed and variable torque limit settings
Table 3-1 Fixed and variable torque limit settings
Selection Torque limitation mode
Mode Maximum upper or lower torque limits
p1400.4 = 0
Maximum motor or regenerative mode torque
limits p1400.4 = 1
Upper torque limit (as positive
value)
p1520 Motor mode torque limit (as
positive value)
p1520 Fixed torque limit
Lower torque limit (as negative
value)
p1521 Regenerative mode torque limit (as
negative value)
p1521
Upper torque limit p1522 Motor mode torque limit p1522 Source for variable torque
limit
Lower torque limit p1523 Regenerative mode torque limit p1523
Upper torque limit p1528 Motor mode torque limit p1528 Source for variable scaling
factor of torque limit
Lower torque limit p1529 Regenerative mode torque limit p1529
Torque offset for torque
limit
Shifts the upper and lower
torque limits together
p1532 Shifts the motor and regenerative
mode torque limits together
p1532
Variants of torque limitation
The following variants are available:
1. No settings entered:
The application does not require any additional restrictions to the torque limits.
2. Fixed limits are required for the torque:
The fixed upper and lower limits or alternatively the fixed motor and regenerative limits
can be specified separately by different sources.
3. Dynamic limits are required for the torque:
– The dynamic upper and lower limit or, alternatively, the dynamic motor and
regenerative limit can be specified separately by different sources.
– Parameters are used to select the source of the current limit.
4. A torque offset can be parameterized.
5. In addition, the power limits can be parameterized separately for motor and regenerative
mode.
NOTICE
Negative values at r1534 or positive values at r1535 represent a minimum torque for the
other torque directions and can cause the drives to rotate if no load torque is generated
to counteract this (see function diagram 5630 in the SINAMICS S List Manual).