Regenerative Operation - Siemens SINAMICS S120 Function Manual

Function modules
9.11 Extended stop and retract
3. Use parameter p0892 to specify how long the retraction speed is to be applied.
4. Select the OFF ramp with parameter p0891.
Figure 9-30
The retraction speed is not approached suddenly. It is approached via the OFF3 ramp.
Parameter p0893 supplies the ramp-function generator with the setpoint for the ESR
retraction speed which is actuated by an OFF3 ramp in the case of drive-autonomous
motions. The safety setpoint velocity limiting p1051/p1052 and the normal velocity limits
r1084/r1087 are active.
Figure 9-31
9.11.4.3

Regenerative operation

Overview
In the case of a fault, the objective is to buffer the DC link until all of the drives connected to the
DC link and enabled by ESR have reached their configured final position. To achieve this, a
suitable drive in the drive line-up, for example a spindle drive, is braked in generator operation.
The DC-link voltage is then monitored by the V
536
OFF ramp with "extended retract"
Connecting the setpoint channel to the ramp-function generator
controller.
dc_min
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions