Speeds And Setpoint Adjustment For Spindle - Siemens SINUMERIK FM-NC Installation And Startup Manual

6 Assigning Parameters to the Control and the PLC Program
6.9 Axes and spindles
6.9.16

Speeds and setpoint adjustment for spindle

Speeds, gear
stages
Speeds for
conventional
operation
Direction of
rotation
Setpoint
adjustment
Machine data and
interface
signals
6-144
The spindle speed output is implemented in the NC with the SINUMERIK 840D.
The control contains the data for 5 gear stages. These stages are defined by a
minimum and maximum speed for the stage itself and by a minimum and maxi-
mum speed for the automatic gear stage changeover. A new gear stage is out-
put only if the newly programmed speed setpoint cannot be traversed in the
present gear stage. For the sake of simplification, the oscillation 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
via the PLC.
The spindle speeds for conventional operation are entered in axis machine data
MD 32010: JOG_VELO_RAPID (conventional rapid traverse) and MD 32020:
JOG_VELO (conventional axis velocity). The direction of rotation is specified via
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 via the selected load gear and via the drive
MD 1401: MOTOR_MAX_SPEED (maximum motor operating speed). In the
case of a spindle drive, the maximum motor speed is entered in MD 1401. The
spindle attains the desired speed via the mechanical gear stage.
MD 35110: GEAR_STEP_MAX_VELO
(maximum speed for gear stage changeover)
MD 35120: GEAR_STEP_MIN_VELO
(minimum speed for gear stage changeover)
MD 35130: GEAR_STEP_MAX_VELO_LIMIT
(gear stage maximum speed)
MD 35140: GEAR_STEP_MIN_VELO_LIMIT
(gear stage minimum speed)
MD 35200: GEAR_STEP_SPEEDCTRL_ACCEL
(acceleration in speed control mode)
MD 35220: ACCEL_REDUCTION_SPEED_POINT
(speed for reduced acceleration)
MD 35230: ACCEL_REDUCTION_FACTOR
(reduced acceleration)
MD 35400: SPIND_OSCILL_DES_VELO (oscillation speed)
MD 35410: SPIND_OSCILL_ACCEL (acceleration in oscillation mode)
MD 35430: SPIND_OSCILL_START_DIR (start direction in oscillation mode)
MD 35440: SPIND_OSCILL_TIME_CW (oscillation time for direction M3 )
MD 35450: SPIND_OSCILL_TIME_CCW (oscillation time for direction M4 )
MD 31060: DRIVE_AX_RATIO_NUMERA (numerator load gearing)
MD 31050: DRIVE_AX_RATIO_DENOM (denominator load gearing)
MD 32010: JOG_VELO_RAPID (conventional rapid traverse)
MD 32020: JOG_VELO (conventional axis velocity)
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
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