Preconditions For Extended Stop And Retract - Siemens Sinamics S120 Function Manual

Function modules
7.12 Extended stop and retract
Example
For a machine tool, several drives are simultaneously operational, e.g. a workpiece drive and
various feed drives for a tool. In the case of a fault, it is not permissible that the tool remains
inserted in the workpiece. This could make both unusable. The tool and workpiece must be
separated from one another in a controlled fashion before the drives are allowed to come to
a standstill.
The "extended stop and retract" function module allows drive-integrated retraction using the
feed drives with subsequent stopping. This means, for example when the line supply fails, a
drive can be switched into the generator mode. This then supplies energy for the DC link so
that the feed drives can retract the tool from the workpiece and then be subsequently
stopped.
7.12.1

Preconditions for extended stop and retract

The following is required in order to be able to use these functions:
Hardware:
● CU320-2, order number: 6SL3040-1MA00-0AA1 (DP) or 6SL3040-1MA01-0AA0 (PN)
● The 24 V power supply for the electronics must be secured
● A PG/PC to program the parameters
Software:
● SINAMICS firmware V4.4 or higher
7.12.2 Activating and enabling the ESR function
PG/PC and drive are connected with one another via PROFIBUS or PROFINET.
1. Use parameter p0888 to select the ESR function:
2. Use p0889 = 1 to enable the ESR response.
3. Transfer the settings into the Control Unit using "RAM to ROM".
The parameterization of p0888 can be changed from a higher-level control depending on the
particular situation - as long as the ESR response is not yet enabled.
ESR status
The actual ESR status can be monitored using parameter r0887.0...13.
416
– p0888 = 0: No function
– p0888 = 1: Extended stopping (function integrated in the drive)
– p0888 = 2: Extended retraction (function integrated in the drive)
– p0888 = 3: Generator operation (Vdc controller)
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions