6
6.12 Travel to fixed endstop (positioning mode) (from SW 3.3)
6-595
Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
The following sequence applies for the ”travel to fixed endstop” func-
tion:
How is this function started?
The function is started when executing a traversing block with the
FIXED ENDSTOP command.
The same data as for a positioning set should be made in this tra-
versing block and, in addition, also the clamping torque in [0.01 Nm]
or the clamping force in [N] (refer under the index entry ”Command–
dependent block information”).
In order that the fixed endstop (workpiece) can be reached at all, it
must be located between the start and target positions. The target
position must be selected a considerable distance behind the fixed
endstop.
How is the axis moved after start?
– After starting the block, the axis travels in the direction of the tar-
get position with the programmed velocity.
– The clamping torque/clamping force, programmed in this block,
already becomes effective from the starting position, i.e. the axis
moves to the fixed endstop with the reduced torque limit/force
limit.
– The dynamic following error monitoring is not effective when trav-
eling to the endstop.
What happens if ...
– ... the fixed endstop is reached before the target position is
reached (standard case)?
––> refer to ”What happens if the fixed endstop is reached?”
– ... the fixed endstop is not reached, but the target position is ap-
proached?
––> refer to ”What happens if the fixed endstop is not reached?”
– ... the programmed clamping torque is not reached.
––> refer to ”What happens if the fixed endstop is reached but
the programmed clamping torque is not reached?”
– ... the axis is first at the fixed endstop and then leaves this posi-
tion, i.e. has the fixed endstop broken off?
––> then the fixed endstop monitoring becomes effective, i.e. the
axis then moves by the distance, set in P0116:8 (fixed endstop
monitoring window) plus the braking ramp.
––> refer to ”fixed endstop” monitoring window
Flowchart
6 Description of the Functions
01.99
05.00
! not 611ue !
02.02