
B–65160E/02
2. FUNCTION EXPLANATION
FANUC AC SPINDLE MOTOR a series
129
(5) Others
(a) Switching from the Cs contouring control mode to the spindle
rotation control mode
Before changing the modes, be sure to confirm that the motion
command for the spindle in automatic or manual operation has
terminated.
If the modes are changed while the spindle is moving, an
interlock or an excessive positioning deviation alarm may be
generated.
(b) Operating monitor
The motor load rating of the spindle and Cs contouring control
axis is not set in conventional parameters. It is set in PRM 3127.
(In models having motor model code, this parameter is set
automatically, so no modification is necessary.)
(c) Remote buffer operation
D Operation with binary statements
D Operation with NC statements. In DNC operation using a
remote buffer, setting is made so as to perform high-speed
distribution if conditions for high-speed distribution are
satisfied (PRM0000#DNC=0).
Before entering the remote buffer operation mode, cancel the
Cs contouring control mode.
In the remote buffer operation mode, Cs contouring control
cannot be performed. Only rotation control is possible.
In the remote buffer operation mode, switching to the Cs
contouring control mode or spindle rotation control mode
must not be performed.
The spindle parameters cannot be rewritten by rewriting
programmable parameters.
(d) The functions for memory type pitch error compensation,
straightness compensation, gradient compensation, and backlash
compensation are invalid for the Cs contouring control axis.
(e) Position coder check for broken wires
The parameter specifying whether to check the position coder for
broken wires (PRM 5603#PDC) cannot be used.
To suppress the broken wire check, set a parameter (PRM
5602#NAL) so as to suppress alarm check of the spindle speed
control unit. If this parameter is set, alarms of the spindle
amplifier are not checked either.
(f) For Cs contouring control, the BMI interface is needed.
(g) FS15-TT spindle
An analog interface spindle and aseries (Serial interface) spindle
cannot be used together.