Migatronic SIGMA2 300 COMPACT Guía De Usuario página 12

Connection and start-up
Cable dimensions
Welding current DC
200 A 35 mm²
300 A 50 mm²
400 A 95 mm² / 2x50 mm² 95 mm² / 2x50 mm²
500 A 2x70 mm²
Welding process
MIG - IAC and pulse
MIG - non pulse
a
Connection of electrode holder for MMA
The electrode holder and earth cable are connected to
plus connection (10) and minus connection (8). Observe
the instructions from the electrode supplier when
selecting polarity.
Adjustment of wire brake
The wire brake must ensure that the wire reel brakes
sufficiently before the welding wire runs over the edge of
the reel. The brake force is dependent on the weight of
the wire reel and wire feed speed.
Factory setting is 15kg.
Adjustment:
• Dismount the control knob
by placing a thin screw
driver behind the knob and
thereafter pull it out.
• Adjust the wire brake by
fastening or loosening the
self-locking nut on the axle
of the wire hub.
• Remount the control knob.
12
PULSE
35 mm²
70 mm²
2x70 mm²
Distance to Total cable length
work piece in welding circuit
(a+b) (a+b+c)
10 m 20 m
30 m 60 m
b
c
Switch on, press, weld
Welding program setting
• Switch on the welding machine on the main switch
(2)
• Select welding program
wire and shielding gas or possible electrode in use.
See program table
• Adjust the welding current and secondary
parameters.
Please read your quickguide
•
The machine is now ready to weld
WARNING
Voltage is present on the welding
wire when pressing the welding
hose trigger.
Trolley with automatic mains voltage transition
(special equipment)
Machines supplied with autotransformer can be
connected to the following mains supplies:
3x230V, 3x400V, 3x440V og 3x500V.
Press the power switch (13) 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 (14) to turn on the machine again (red
indicator light).
The energy saver function can be permanently
disconnected by a Migatronic technician.
Please read how this
should be selected on
your welding machine in
the quick guide. Select
the welding program
suitable for the welding