Detailed Description
2.1 Spindle modes
Spindles (S1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-19
A watchdog checks whether the zero mark can be found in the path stored in machine data:
MD34060 $MA_REFP_MAX_MARKER_DIST
(excluding IC).
If the speed defined in machine data:
MD35300 $MA_SPIND_POSCTRL_VELO (positioning speed)
is reached before the spindle is synchronized, the spindle will continue to rotate at the
positioning creep speed (the spindle is not accelerated further).
Case 2: Spindle synchronized
SPOS, M19 or SPOSA will switch the spindle to position control mode.
Acceleration from machine data:
MD35210 $MA_GEAR_STEP_POSCTRL_ACCEL (acceleration in position control mode)
is activated.
The direction of rotation is defined by the programmed motion (ACP, ACN, IC, DC) or by the
distancetogo.
The speed defined in machine data:
MD35300 $MA_SPIND_POSCTRL_VELO (position-control activation speed)
is not exceeded.
The travel path to the end point is calculated.
The spindle travels to the programmed end point optimally in terms of time.
This means that the end point is approached at the highest possible speed
(maximum MD35300 $MA_SPIND_POSCTRL_VELO).
Depending on the appropriate secondary conditions, the operational sequences in phases
1 - 2 - 3 -4, or 1 - 3a - 4a are executed.
Phase 2
Case 1: Spindle not synchronized
When the spindle is synchronized, position control is activated.
The spindle rotates at the maximum speed stored in machine data:
MD35300 $MA_SPIND_POSCTRL_VELO
until the braking start point calculation identifies the point at which the programmed spindle
position can be approached accurately with the defined acceleration.
Case 2: Spindle synchronized
To reach the end point, the spindle is accelerated up to the speed defined in machine data:
MD35300 $MA_SPIND_POSCTRL_VELO.
This is not exceeded.
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