Bridgeport Interact 2 - Z Axis Extreme Limit Switches; Z Axis Reference Switch; Quill Limit Switches

8.4
8.4.1
QUILL
LIMIT
SWITCHES
Z
Axis
Extreme Limit Switches
The available
stroke
of
the
quill is determined
by the
software
limits set
in the
machine
control.
The
extreme
limit
dogs
exist
only as an
additional
safeguard
to shut
off power to
the
axis drive
in the
event
of a contiol
or
drive malfunction
which
causes
the
quill to
go outside
its software
limits.
1. In
order to set
the
extreme
limit switches
it
is
necessary
to override
the software
limits'
Change
machine
parameter
35
to
+1000
Change
machine
parameter 36
to
-1000
CAUTION:
Tbe
Z
axis
software
limits are nou inactioe.
Use
the
bandwbeel
only.
Approach
tbe
bump
stoPs
at
a creeq
feed
rate.
2. Lower
the
quill approximately
25
mm.
3.
Remove
rwo screws
from
the hinged
push
button
housing
(8780063)
to
give
access
to
the
limit switches.
4. Loosen
the hex
nut
(8301931)
on the
positive
stop
adjustment
screw
(8O75897).
5.
Place a
1.5 mm
(.060")
shim
on the
top of
the trip stop
(8050179)
in
the
quill
housing
slot
and up
to the
quill.
6. Carefully
use rhe
handwheel
to raise the
quill until a slight
resistance is
felt on the
shim.
7.
Turn
the
positive
stop
screw
(8O75897)
until the
switch
(8075S09)
is actuated.
Flold this
position and
lock
the
hex locknut
(8301931).
8.
Remove
the shim.
9.
Carefully.
using the
handwheel,
position
display and
the
power
e"labie
button,
set
the
bottom
position switch
(8075105)
to
give a stroke
of.726
mm
to 127
t;lt-
10. Reset
the
Z axis
refererice
dog
as
per
Section
8.4-2-
11.
Reset
the Z axis
softwre
lin:.its
as
per
Section
8.4.3.
8.4.2
Z Axis
Reference
Switch
The
axis
reference
switch
is
used
in conjunction
with
the
encoder
on the motor
shaft
to
determine
the
machine
datum
following an
interruption
of
mains
Power.
1. When
resetting
the
reference
switch
first temporarily
set
it to
operate
between
8
mm and 10
mm
from
the
top
position
switcti.
2. Switch
off the
machine
isolator.
Switch
on the
machine
isolator
and
pass over
tlte reference
points
as
normal.
3.
Place the control
in
reference
mode
by
pressing
the
REF
8-1 5
key
then
@