Detailed Description
2.3 Configurable gear adaptation
Spindles (S1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-53
Gear step change position MD35012
The gear step change position is defined in machine data:
MD35012 $MA_GEAR_STEP_CHANGE_POSITION
for each gear step.
Gear step change wait time MD35310
After the positioning action the machine waits for the time configured in machine data:
MD35310 $MA_SPIND_POSIT_DELAY_TIME
until gear change request:
DB31, ... DBX84.6 (oscillation mode)
DB31, ... DBX82.3 (change gear)
and
DB31, ... DBX82.0-82.2 (set gear step A to C)
are output.
Position identifiers/position
The position is always approached via the shortest path (corresponds to DC).
If no reference is available and the spindle is stationary
(e.g., after power ON), the approach is determined by machine data:
MD35350 $MA_SPIND_POSITIONING_DIR.
If an adjustable gear step change position is required, then this can be achieved by writing
the machine data and by a subsequent NewConfig.
The MD value can be changed using the part program or via the MMC.
If the system is unable to reach the preset position, then alarm 22020 is signaled and the
gear step change dialog between NCK and PLC does not take place in order not to destroy
the gears. As this alarm is serious, the part program cannot continue and the cause must be
eliminated under all circumstances Experience has shown that the abortion of positioning is
usually due to incorrect MD settings or incompatible PLC signals.
Velocity
The positioning speed is taken from machine data:
MD35300 $MA_SPIND_POSCTRL_VELO.
NC/PLC IS "Spindle speed override"/"Feedrate override" at
DB31, ... DBX17.0=0: DB31, ... DBB19)
as well as:
DB31, ... DBX17.0=1: DB31, ... DBB0
are effective as normal for positioning.
The positioning speed can be changed proportionally through the program instruction
OVRA[Sn].
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