Migatronic PI 350 Guía De Usuario página 12

Connection and start-up
Connection of electrode holder for MMA
The electrode holder and return current cable are
connected to plus tap (6) and minus tap (5). Observe the
instructions from the electrode supplier when selecting
polarity.
CWF Multi (option)
It is possible to connect to the PI with up to 8 CWF Multi
units via dedicated CAN BUS connector placed on the rear
side of machine (option). In order to permit this control
capability, enter the USER Menu and select "Fdr" (feeder),
then access "Act" (Active devices) and set the parameter to
1. (see USER Menu)
Now the PI is ready to control the CWF directly from the
box: for each TIG welding program it is possible to select
what CWF unit must be activated and the relative CWF
program in the range 1 to 20.
Depending from the settings on the CWF, if the unit is in
OFF mode the error message "Fdr" can be displayed on PI
and the welding process stopped. This is to inform the user
the CWF is not responding to start signal from PI.
Connection of remote control
PI can be controlled via a remote control or a welding
robot. The remote control socket (8) has terminals for the
following functions:
A: Input signal for welding current, 0 –
+10V input impedance: 1Mohm
B: Signal ground
C: Arc detect – contact of relay (max.
1Amp), fully insulated
D: N.C.
E: Arc detect – contact of relay (max. 1Amp), fully
insulated
F: N.C.
G: Supply +24VDC. Short circuit protected with PTC
resistor (max. 50mA)
H: Supply ground
+15V
20 K
A
100 nF
B
C
D
E
F
G
PTC 70
H
G
F
H
E
D
C
1 M
100 nF
+
24 VDC
Trolley with automatic mains voltage transition
(Special equipment)
Machines supplied with autotransformer can be connected to the
following mains supplies: 3*230V, 3*400V, 3*440V og 3*500V.
Press the power switch (18) to turn on the autotransformer
(green indicator light). The built-in energy saver function will
automatically turn off the welding machine after 40 minutes of
inactivity. Press the button (17) to turn on the machine again (red
indicator light).
The energy saver function can be permanently disconnected by a
Migatronic technician.
Lift instructions
The lifting points must be
used (please see figure)
when lifting the machine.
The machine must not be
lifted with mounted gas
bottle.
Do not lift the machine by the handle.
Do not step on the handle.
A
B
Switch on, press, weld
Welding program setting
• Switch on the welding machine on the main switch (2)
• Select process
See Quickguide.
• Adjust welding current and
secondary parameters.
For more information about
setting the parameters, please
refer to the quick guide
• The machine is ready to weld
WARNING
When you activate the torch trigger,
there is voltage applied to the
welding wire and electrode
12
t 1 t 2
V %
TIG AC/DC
QUICKGUIDE PI
I I I
200 250 350 500
UK