
B–63523EN–1/03
9. SPINDLE SPEED FUNCTION
1230
When the spindle synchronous control option is selected, ensure that
simple spindle synchronous control signal ESRSYC is active when
synchronous control is not exercised.
Also, ensure that spindle synchronous control signal SRSYC is not active
during simple spindle synchronous control.
If the spindle synchronous control signal and simple spindle synchronous
control signal are active at the same time, the current mode remains set,
and the NC issues alarm PS194 as a warning.
This alarm returns the value of the signal (SRSYC or ESRSYC) last set
high back to 0, and remains on until reset back to 1.
In a mode other than spindle synchronous control mode, simple spindle
synchronous control signal ESRSYC can be issued at any time. However,
the response of the second spindle varies according to the first spindle
state existing when ESRSYC is applied.
No particular restrictions are imposed on the timing at which the simple
spindle synchronous control signal is set to 0. When simple spindle
synchronous control signal ESRSYC is set to 0, the second spindle is
immediately initialized to spindle mode, regardless of its previous mode.
The mode of the first spindle remains as is.
The table below summarizes the changes in the first spindle and second
spindle states depending on the transition of simple spindle synchronous
control signal ESRSYC and the state of spindle synchronous control
signal SRSYC.
Transition of simple spindle
synchronous control signal
ESRSYC
0 ³ 1
ESRSYC
1 ³ 0
State change of first spindle SP ³ SP
(Remains
as is)
CT ³ CT
(Remains as
is) (Note 1)
SV ³ SV
(Remains as
is) (Note 2)
SP ³ SP
(Remains
as is)
CT ³ CT
(Remains
as is)
SV ³ SV
(Remains
as is)
State change of second
spindle
SP ³ SP
(Note 3)
SP ³ CT
(Note 1)
SP ³ SV
(Note 2)
SP ³ SP
(Note 4)
CT ³ SP
(Note 4)
SV ³ SP
(Note 4)
When the spindle synchro-
nous control option is se-
lected
SRSYC 1 (during spindle synchronous
control)
³ Alarm No. 194 is issued.
SRSYC 0 (not during spindle synchronous
control)
³ The same changes as those
indicated above occur.
SRSYC 1 (during spindle synchronous
control)
³ Alarm No. 194 is released
by a reset.
SRSYC 0 (not during spindle synchronous
control)
³ The same changes as those
indicated above occur.
Legend
SP : Spindle mode CT: Cs contour axis control mode
SV : Rigid tapping mode, or spindle positioning mode (T series only)
D Relationship between
simple spindle
synchronous control and
spindle synchronous
control