5
1. GENERAL DESCRIPTION
This interface must be used only with the Plasma Prof.
162 Art.952.
It is made up of the control circuit code 5602042, the
connection code 5585630 and the male connector code
3170246, and allows the user to control the following
functions remotely:
· Start
· Arc transferred with adjustable delay from 0 to 2
seconds.
· Arc voltage 0÷10VDC (maximum value).
· Digital or isolated analog cutting current setting.
2. INSTALLATION Fig. 1-A-B-C
The following tasks should be carried out only by quali-
fied personnel.
2.1 Make sure that the mains cable is unplugged from the
power mains.
2.2 Remove the top panel of the machine.
2.3 Fasten the electronic circuit
B
to the insulating sup-
ports already inserted on the surface.
2.4 Fasten the connector
A
using the 4 screws, placing
the geared washers as shown in the figure; use an
M4 nut to hold the earth cable in place.
Insert the three connectors
C
,
D
,
E
and the power
supply connector
F
(already provided on the machi-
ne) on the circuit
B
, then pass the bundle of wires
through the hole
G
.
2.5 Insert the connector
H
into the control circuit
L
(Note:
the connector
I
must not be inserted), then pass the
remaining wires through the hole
M
.
2.6 Insert the connector
N
on the faston marked (
-
),
remove the jumper
P
from the connector
Q
and insert
the connector
O
. The jumper P may be stored in the
co tainer U for future use.
2.7 Only if you need to use the interface to adjust the cut-
ting current, follow the steps described in points 3.3 or
3.4.
2.8 Install the top panel of the machine.
3. DESCRIPTION OF CONNECTIONS - Fig. 2-A-B-C
The male connector code 3170 246 must be connected
as follows:
3.1 Pin
I-J - Plasma arc start
.
When using a straight torch, to activate this function
you must short-circuit the conductors leaving the
central fitting.
When using a manual torch, pins
I
and
J
must be
connected together.
3.2 Pins
H-N - Arc transferred
.
These pins correspond to the contact of a relay that
closes as soon as the arc begins cutting.
Closure of this contact may be delayed by up to 2
seconds by pressing the button
SW3
on the control
circuit
L
and checking the delay time on the display
Y
. After 3 sec., the display indicates the diameter of
the gas nozzle holder. The machine is supplied with
a standard delay of 0.5 seconds.
3.3 Pins
E-L - Analog input.
This function may be used after switching the "remo-
te" jumper
T
from
OFF
(J7) to
ON
(J8); the
yellow/green LED lights to indicate that the function
is active.
This function makes it possible to adjust the cutting
current, from minimum to maximum, by applying a
variable voltage from 0 to 5VDC or from 0 to 10VDC.
These pins must be connected using a shielded
cable. Connect the pins
M
and
E
together. Set the
selector switch
S
(SW2) to ANALOG and 5V or 10V
according to the control voltage used.
3.4 Pins
C-D - Digital input
.
This function may be used after switching the "remo-
te" jumper
T
from
OFF
(J7) to
ON
(J8); the
yellow/green led lights to indicate that the function is
active.
This function makes it possible to adjust the cutting
current by means of a personal computer, through
the RS232 serial port. These pins must be connec-
ted using a shielded cable. Connect the pins
M
and
E
together. Set the selector switch
S
(SW2) to DIGI-
TAL.
3.4.1. DATA TRANSMISSION FORMAT:
1 bit start
8 bits dat
2 bit stop
BAUD RATE 2400
4 CHAR: NNN CR NNN=000-255
N=ASCII 0-9
CR= 0X0D
3.5 Pins
A-K - Arc voltage.
This voltage ranges from 0 to 10VDC max., and cor-
responds to the cutting voltage reduced 25 times.
The pin
K
must be connected to earthed cutting
bench.
INSTRUCTION MANUAL FOR INTERFACE MODULE
