
B–63002EN/01
9. SPINDLE FUNCTIONS
NC FUNCTION
107
Up to three spindles can be controlled. The three spindles are called the
first, second, and third spindles. The first and second spindles are made
up of serial interface spindles, and the third spindle is of an analog
interface spindle. (The second or third spindle may be omitted from the
configuration.)
A spindle speed is specified with a 5-digit numeric value following S.
This command functions on the spindle selected by spindle selection
signals (SWS1 to SWS3). More than one spindle can be selected so that
they can be rotated at the same time by specifying the same command.
Each spindle holds a specified command (spindle speed). When the
spindle is not selected by the spindle selection signal, the spindle rotates
at the held spindle speed. By using this feature, the spindles can be rotated
at different speeds at the same time. For each spindle, a signal to stop
spindle rotation is provided (*SSTP1 to *SSTP3). With these signals,
unnecessary spindles can be placed in the stopped state.
Feedback pulses from the position coders connected to the first and
second spindles can be input to the CNC to perform threading and feed
per rotation. One of the position coders connected to the first and second
spindles is selected by a signal. The feedback pulse from the selected
coder is then input to the CNC. From the third spindle, no feedback pulse
can be input.
The multi–spindle control functions of the M and T series differ as
follows:
For the M series, multi–spindle control is possible only when spindle
gear selection type T is specified.
For the M series, rigid tapping spindle selection signals (RGTSP1,
RGTSP2, and RGTSP3) cannot be used.
When two–path control is performed with the M series, spindle
commands and position coder feedback signals cannot be changed
between the paths (spindle command select signals SLSPA and
SLSPB, and spindle feedback select signals SLPCA and SLPCB are
not supported).
SWS1
SWS2
SWS3
*SSTP1
*SSTP2
*SSTP3
S
command
Hold
1st
spindle
Position
coder
Hold
Hold
2nd
spindle
3rd
spindle
Position
coder
9.11
MULTI–SPINDLE
CONTROL