Installation manual
CNC 8035
5.
CONC
EPTS
Spi
ndl
e
(S
OFT
M: V15.3
X
)
(S
OFT
T: V16.3
X
)
·230·
5.9.4
Spindle in closed loop
One of the following conditions must be met in order for the spindle to operate in closed loop by
means of "spindle orientation (M19)":
•
It is an analog or digital drive with feedback to the CNC (via connector) and s.m.p NPULSES
(P13) is other than 0.
•
It is a digital drive (CAN) with feedback to the drive and s.m.p DRIBUSLE (P51) is other than 0.
Also, when switching from open to closed loop, either an "M19" or an "M19 S±5.5" must be executed.
The S±5.5 code indicates the spindle position, in degrees, from the spindle reference point (marker
pulse).
When switching form open to closed loop, the CNC behaves as follows:
• If the spindle has a home switch:
In this case, it is possible to detect the right reference mark among the possible ones (having
the encoder at the motor) originated especially by different gear ratios.
In order for the drive to detect the right reference mark, the home switch detection must be
accurate. This is achieved by having the spindle turn one more revolution once the home switch
has been detected. The end portion of this last spindle revolution is carried out slowly.
Spindle home search:
The spindle must have an encoder so it can be homed.
Once the home switch has been detected, the spindle will keep turning in the same direction
and at the speed indicated by s.m.p. REFEED1 (P34). Before completing the next 350º, the
spindle slows down to the speed indicated by s.m.p. REFEED2 (P35). From then on, the home
switch is detected while turning at REFEED2 speed and keeps moving until detecting the
reference mark.
Some points to consider:
The first movement until the home switch is detected and the entire next process is carried
out in the direction indicated by s.m.p. REFDIREC (P33).
The home search may be started when the spindle is stopped or moving (M3 or M4). If the
home search starts when the spindle is stopped or it has to change its turning direction, the
transition from the starting speed S0 to the one indicated by s.m.p. REFEED1 will be made
with a linear acceleration ramp.
If the home search starts when it is stopped and the home switch is pressed, it will also turn
one more revolution.
This type of spindle home search may be carried out with a CAN drive. In order for it to work
on CAN or analog spindles when there are several reference marks per revolution due to
different gear ratios, the reference mark must be managed with the DECELS signal ignoring
the actual (real) reference mark signal.
For greater accuracy, if the average cycle of the PLC exceeds 8 ms, we recommend to
manage the DECELS input at the PLC with a periodic cycle equal to or shorter than 8 ms.
It is also recommended to manage the DECELS input from a local input.
From versions V15.11 (mill model) and V16.11 (lathe model) on, it is possible to apply
a derivative gain or feed-forward while homing the spindle.
i
REFEED1
350º
REFEED2
I0
DECELS
Summary of Contents for 8035-M
Page 1: ...Soft M V15 3x Soft T V16 3x CNC 8035 Ref 1106 INSTALLATION MANUAL M T MODELS...
Page 2: ......
Page 4: ......
Page 10: ......
Page 12: ......
Page 18: ...CNC 8035 18 Version history M...
Page 24: ...CNC 8035 24 Version history T...
Page 28: ...CNC 8035 28 Safety conditions...
Page 32: ...CNC 8035 32 Material returning terms...
Page 34: ...CNC 8035 34 Additional remarks...
Page 36: ...CNC 8035 36 Fagor documentation...
Page 56: ...Installation manual CNC 8035 1 CNC CONFIGURATION CNC structure SOFT M V15 3X SOFT T V16 3X 56...
Page 178: ...Installation manual CNC 8035 4 MACHINE PARAMETERS Tables SOFT M V15 3X SOFT T V16 3X 178...
Page 424: ......
Page 430: ...Installation manual CNC 8035 B APPENDIX Probe connection SOFT M V15 3X SOFT T V16 3X 430...
Page 450: ...Installation manual CNC 8035 G APPENDIX Key codes SOFT M V15 3X SOFT T V16 3X 450...
Page 454: ...Installation manual CNC 8035 I APPENDIX Key inhibiting codes SOFT M V15 3X SOFT T V16 3X 454...
Page 468: ...CNC 8035 N APPENDIX SOFT M V15 3X SOFT T V16 3X 468 Installation manual...
Page 469: ...CNC 8035 N SOFT M V15 3X SOFT T V16 3X 469 Installation manual...
Page 470: ...CNC 8035 N SOFT M V15 3X SOFT T V16 3X 470 Installation manual...