Extended Retract - Siemens Sinamics S120 Function Manual

7.12.5.2

Extended retract

In the case of a fault, the objective is to approach a retraction position. The retraction method
is used as long as the drive is still capable of functioning. The function is parameterized and
operates on an axis-specific basis. Interpolating coupling of the axes is not realized.
Configuring the "extended retract" response:
1. The retract response is configured with p0888 = 2.
2. The retraction speed is defined using p0893.
3. The time for which the retraction speed should be applied is specified using p0892.
4. The OFF ramp is selected using p0891.
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-integrated motions.
The safety setpoint velocity limiting p1051/p1052 and the normal velocity limits r1084/r1087
are active.
Figure 7-31
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Figure 7-30 OFF ramp with "extended retract"
Connecting the setpoint channel to the ramp-function generator
Function modules
7.12 Extended stop and retract
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