Bridgeport Interact 2 - Control System Description; Fitting a New Controller

Press programme start
button on
pendant
and adjust
R30
potentiometer on drive
until the
voltage
reads:
r 4.8
volts
for
50
Hz machine
*.
5.9
volts
for
60
Hz machine
8.
Press
programme
stop button, alter parameter 77 back to
5,
switch
off
at
isolator, remove
the
D.C.
voltmeter
and reconnect
wires 5
,
6,7
to overload
3
.
9.
Switch on and reference inachine
as normal.
Alter
machine
parameter
37 to ON
The display
will
alter to 1um resolution.
Set display to
zEro.
Adjust offset potentiometer
R9 on
drive
until
the
display
figure
reads 0.000 or the last figure
oscillates
from
0
to
t
1.
Change
machine parameter
37
to off.
10.
Change machine parameter 7
to 3O;8 to 30;21 to OFF; and22 to ON.
Set
up programme
to
rapid
the relevant axis and set
cycling.
With the % override
control to
fully
clockwise adjust
tacho.
potentiometer
R23
on drive
until
D.R.O.
reading
is approximately
balanced
about
5.000
for
both directions.
Alter machine parameter
back
as previously.
7 to
2;8
to 70;21
to ON; and 22
to OFF.
Drive
is now
set
up.
6.3
CONTROL SYSTEM DESCRIPTIO
The
control
unit
has faciiities
for
automatic
cycling of the
machine
from
the stored programme
and
for
interlocking
of the power feed
controls.
It is
a closed loop
feedback
system. This
faciliry
being
achieved using
a
digital
encoder
on
rhe
rear
of each
motor.
Boundary
parameters
such as
slide
rapid
traverse rates,
slide lost
motion
values and software
limits
to trayerses must be entered
into the
cotltrol at
machine build
and are retained even
with
the machine power
off
by
abattery back-up
system.
NOTE:
Tbe batteries
are boused bebind
a cooer
pldte
on tbe
front
of
tbe
unit.
Batteries must
only
be remoaed
if tbe macbine
power
is ON.
Otberwise tbe boundaryl
parameters
are
lost.
6.+ FITTING
A NEW
CONTROLLER
Before
removing
the old controller,
check
that the Machine
Software Parameter
Record
sheet is
correct
(this
can be
found
in
the door pocket
of the electrical
cabinet).
With the controller in its
manual
mode enter
the
figure
95148
md
step through
the machine
parameter figures
using
the
cursor
button
If
necessary amend
the record
sheet.
1. Switch off
the
machine and
isolate it.
2. Remove
the pendant
box rear
cover
to expose
the back
of the controller.
Remove the
110
volt
supply
(wire
numbers
8 and
9)
and earth
wires from
the
3 way terminal block.
After removing
6-3
+