Travel To Fixed Stop - Siemens SINAMICS S120 Function Manual

Servo control

3.16 Travel to fixed stop

The "DSC" function cannot be active under the following conditions:
● Isochronous mode has not been selected (r2054 not equal to 4)
● PROFIBUS is not isochronous (r2064[0] not equal to 1)
● On the control side, DSC is not active, which causes the value of KPC =0 to be
Function diagrams (see SINAMICS S120/S150 List Manual)
● 2420 PROFIdrive standard telegrans and process data
● 2422 Vendor-specific telegrams and process data
● 3090 Dynamic Servo Control (DSC)
● 5020 Speed setpoint filter and speed pre-control
● 5030 Reference model
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p1190 CI: DSC position deviation XERR
● p1191 CI: DSC position controller gain KPC
● p1192[D] DSC encoder selection
● p1193[D] DSC encoder adaptation factor
● r1407.4 CO/BO: Status word, velocity controller;
3.16 Travel to fixed stop
Description
This function can be used to move a motor to a fixed stop at a specified torque without a
fault being signaled. When the stop is reached, the specified torque is built up and remains
applied.
The desired torque derating is brought about by scaling the upper/motor-mode torque limit
and the lower/regenerative-mode torque limit.
Application examples
● Screwing parts together with a defined torque.
● Moving to a mechanical reference point.
112
transmitted to p1191.
velocity setpoint from DSC
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions