Siemens SINUMERIK 840D sl Function Manual page 298

Manual and Handwheel Travel (H1)
Handwheel travel in JOG
Input frequency
The handwheel connections can receive handwheel pulses with a maximum input frequency
of 100 kHz.
Velocity
In handwheel travel the following axis velocities, effective during JOG mode, are used:
SD41110 $SN_JOG_SET_VELO (axis velocity in JOG),
SD41130 $SN_JOG_ROT_AX_SET_VELO
(axis velocity of rotary axis in JOG mode),
MD32020 $MA_JOG_VELO (conventional axis velocity)
Because of the limited feedrate, the axis is not able to follow the handwheel rotation
synchronously, especially in the case of a large pulse weighting, and therefore overtravels.
Abortion of traversing movement
A RESET or the interface signal:
DB31, ... DBX2.2 (delete distance-to-go/spindle reset)
cause the traverse motion to be aborted.
The setpoint/actual-value difference is deleted.
STOP only interrupts the traversing movement.
Any setpoint/actual-value difference is retained.
With START the distance-to-go is then traversed.
Increment-value limitation
The user can limit the size of the increment selected for geometry axes via channel-specific
machine data
MD20620 $MC_HANDWH_GEOAX_MAX_INCR_SIZE
(limitation of handwheel increment for geometry axes).
The size of the selected increment for machine axes can be limited with the following axial
machine data:
MD32080 $MA_HANDWH_MAX_INCR_SIZE
(Limitation of selected increment)
A traversing movement defined by the handwheel for a geometry axis is defined by:
● Traverse path
● Size of the variable increment
● Geometry-axis assignment
298
(SD41010 $SN_JOG_VAR_INCR_SIZE)
(MD20620 $MC_HANDWH_GEOAX_MAX_INCR_SIZE)
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions