Speeds And Setpoint Adjustment For Spindle - Siemens SINUMERIK 840Di Manual

10 NC Start-Up with HMI Advanced
10.5 Axes and spindles

10.5.24 Speeds and setpoint adjustment for spindle

Speeds, gear
stages
Velocities for
conventional
operation
Direction of
rotation
Setpoint
adjustment
10-368
In SINUMERIK 840Di, data for five gear stages are implemented. These stages
are defined by a minimum and maximum speed for the stage itself and by a
minimum and maximum sped for the automatic gear stage changeover.
A new gear stage is output only if the newly programmed speed setpoint cannot
be traversed in the present gear stage. For the sake of simplification, the oscilla-
tion times for gear stage changeovers can be specified directly in the NC; the
oscillation function must otherwise be implemented in the PLC. The oscillation
function is initiated in the PLC.
Max. speed of gear stage 2
Max. speed for gear stage 2 changeover
Max. speed of gear stage 1
Max. speed for gear stage 1 changeover
Min. speed for gear stage 2 changeover
Min. speed of gear stage 2
Min. speed for gear stage 1 changeover
Min. speed of gear stage 1
Fig. 10-29 Example of speed ranges with automatic gear stage selection (M40)
The speeds of the spindle in conventional mode are entered in the machine
data:
S
MD 32010: JOG_VELO_RAPID (conventional rapid traverse) or
S
MD32020: JOG_VELO (conventional axis velocity).
The direction of rotation is specified using the appropriate directional keys for
the spindle on the MCP.
The direction of rotation of a spindle corresponds to the traversing direction of
an axis.
The speeds for drive control must be transferred to the drive as scaled values.
The values are scaled in the NC using the selected load gear and the appropri-
ate drive parameter.
Speed
(rev./min)
Max. spindle speed
É É É
É É É
É É É
É É É
É É É
É É É É É É
É É É É É É
É É É É É É
É É É
É É É
Min. spindle speed
0
1
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
06.03
2
gear stage