
B-63943EN-1/02 11.SPINDLE SPEED FUNCTION
- 1331 -
Caution
CAUTION
1 The M codes to specify Cs contour control mode switching
must be assigned to M codes not buffered. (Parameter
Nos. 3411 to 3420)
2 Avoid changing spindle gears in Cs contour control mode.
When a gear change is required, be sure to perform the
gear change in spindle speed control mode.
3 The following error compensation functions are enabled for
the Cs contour control axis:
Pitch error compensation, both-direction pitch error
compensation, backlash compensation
4 For the axis under Cs contour control, the following
functions cannot be used:
- Index table indexing
- Axis switching
- Polar coordinate command
- Synchronization control
- Axis control by PMC
- Removal of controlled axis
5 In the Cs contour control mode, when an axis control
parameter for the Cs contour control axis such as the
acceleration/deceleration time constant is changed, the
new parameter value does not become valid immediately.
The new parameter value becomes valid after the Cs
contour control mode is canceled then entered again.
6 When the position gain is automatically set at Cs contour
control switching (when bit 7 (ALG) of parameter No. 1814
is set to 1), changing the setting in parameter No. 4069 to
4072 of the loop gain corresponding to the selected spindle
gear does not make the new setting valid immediately.
To make the new setting valid, cancel the Cs contour
control mode, then set the Cs contour control mode again.
If more than one Cs contour control axis is present,
however, the newly set value is included in the position
gain values selected for these axes among which the
smallest value is to be selected.
Reference item
For details of the parameters (parameter Nos. 4000 to 4539), signals,
and alarms for the serial spindle control unit, refer to the following
manuals of serial spindles:
FANUC AC SPINDLE MOTOR αi series PARAMETER MANUAL
(B-65280EN)
FANUC SERVO AMPLIFIRER αi series DESCRIPTIONS
(B-65282EN)
FANUC SERVO SYSTEM αi series MAINTENANCE MANUAL
(B-65285EN)