Bridgeport Interact 2 - Limit Switches and Lubrication

7.6 LIMIT SWITCH
REPLACEMENT
7.6.1 X Axis
Extreme
Limit
Do
The available
stroke
of the table 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 control
or drive malfunction
which causes the table to
go
outside its software
limits.
1. In order to set the extreme limit dogs it is necessary
to
override
the software
limits.
Change
machine
paxameter
31
to
+1000
Change
machine
parameter
32
to
-1000
CAUTION:
Tbe X axis
software
limits are nou
inactiae. Use
the
bandwbeel only. Approacb the
ballscrew
positioe
stops at
d
creep
feed
rate.
2.
Using
the handwheel,
position
display and
the
power enable lamp, set the dogs
to give an axis
suoke
of
7 5l mm to 7
52
mm central
to the traverse between positive ballscrew stops.
3.
Reset the X axis reference dog as
per
Section 7.6.2.
4.
Reset
the
mechine
software
limits
as
per
Section
7 .6.3
.
7.6.2 X
Axis
Reference Dog
The
axis reference
dog
is
used in
conjunction
with
the
encoder on
the
motor
shaft
to determine
the
machine
datum
following
an intemrption of mains power.
1.
When
resetting
the
reference
dog
first
temporarily set
it
to
operate between
8
mm and
10
mm
before
the
extreme
.
2.
Switch
off
the main isolator.
Switch
on
the machine isolator and
pass
over the axis reference
points as normal.
3.
Place
the control
in reference mode
by pressing the
4.
Re-adjust the
axis reference dog to operate the reference
switch at between
-1.0
mm and
-1.5
mm as
read
on the position readout
display.
5.
Reset
the machine
software limits as per
Section 7
.6.3 .
7.6.3
X Axis
Software
Limits
After
changing a
feed
motor, a
feed
drive
belt, or
an axis
limit
switch,
it is
necessary to reset
the
software limits.
1. Temporarily
override
the software limits
Chaage machine parameter
35
to
+1000
Change machine parameter
36
to
-1000
CAUTION: Tbe
X axis
software limits
are
now inactiae.
Use
the bandwbeel
only. Approacb
tbe
ballscrew
positioe
stops
at a creep
feed
rate.
REF
key and then
@
7-74