July 2013 6.12 Spindle 959
Gear shifting You control the gear shifting through PLC outputs. The NC enters the current
gear range according to the programmed speed in W256. The gear range is
calculated with MP3510.x. The output of the gear range is defined in MP3010.
MP3030 bit 1 determines whether the speed should be reduced to 0 when
shifting between gears.
When the gear range is changed, the NC sets the G strobe (M4070). As soon
as you confirm the gear shift with M4090, the program resumes and the G
strobe (M4070) is reset by the NC.
If a TOOL CALL block is followed by the output of a T strobe and G strobe,
then M4547 is set by the output of the T strobe and reset by output of the G
strobe. If there is no output of either the T or G strobe, M4547 is not set.
In the PLC program you can change the programmed speed and the gear
range that is calculated by the NC. The programmed speed is saved by the NC
in D356 and D756. The following procedure is fundamentally possible, but not
in connection with mid-program startup.
Enter a speed in D756 and a gear range in W256. The speed must lie within
the speed range of the gear.
With M4134, activate your entries in D756 and W256.
After the NC has reset M4134, change the gear and report with M4090 that
the gear shift has been completed.
On machines with transmission or wye/delta switchover, the RPM
FACTOR (Q403) function of Cycle 209 (Tapping with chip breaking) must
not be used with a value other than the default value. Switching the gear
range or wye/delta switchover during retraction with the RPM FACTOR
function may cause damage to the machine.
Please inform the customers who are using these types of machines that
the RPM FACTOR (Q403) function of Cycle 209 (Tapping with chip
breaking) must not be used with a value other than the default value.
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