Fagor CNC 8055i FL EN - C Axis and Spindle with a Single Feedback

Installation manual
CNC 8055
CNC 8055i
CONCEPTS
7.
SOFT: V02.2X
·371·
Axes (2) controlled by a single drive
7.13.1 "C" axis and spindle with a single feedback
At the lathe model, when using a single feedback for the spindle and "C" axis, set axis parameters
SWITCHAX (P65) and SWINBACK (P66) of the C axis.
SWITCHAX (P65)
It indicates with which main axis it is associated.
Set axis parameter SWITCHAX=10 of the "C" axis
SWINBACK (P66)
It indicates the type of "C" axis feedback.
When communication is via Sercos, proceed as follows:
• The axis parameter DRIBUSID (P56) and the spindle parameter DRIBUSID (P44) must be set
with the same value (same Sercos address).
• To govern the "C" axis, enable its SERVOON, SPENA and DRENA signals and activate the DRO
signal of the spindle so it works as a DRO (not controlled); and vice versa.
For digital servo system, the PLC mark CAXSEROK must be treated. See "7.12 Digital servo (CAN
or Sercos)" on page 363.
The following examples show several connection possibilities.
In all of them, the velocity command is switched automatically ignoring the SWTCH2 mark.
2 motors and DRIBUSLE=0
Analog or Sercos connection with DRIBUSLE=0. Analog or Sercos connection with SERCOSLE=0.
The feedback is taken to the CNC connector for the spindle and there are 2 motors (C axis and
spindle).
The feedback must be connected to the spindle (S) connector.
In this case, the drive works with SET 0 and GEAR RATIO 0.
0 = with none 1 = with X 2 = with Y 3 = with Z
4 = with U 5 = with V 6 = with W 7 = A
8 = B 9 = C 10 = with the spindle
0 It uses the feedback of the main axis.
1 It has its own feedback device (external)
2 It uses the feedback of the main axis, but it has its own velocity command.
10 For an additive coupling.
Spindle (S) "C" axis
DRIBUSID
DRIBUSLE
(P44) = 1
(P51) = 0
DRIBUSID
DRIBUSLE
SWITCHAX
SWINBACK
(P56) = 5
(P63) = 0
(P65) = 10
(P66) = 2