Section 14 − Mig Welding (Gmaw) Guidelines; Typical Mig Process Connections Using A Voltage-Sensing Wire Feeder; Typical Mig Process Connections Using A Constant Speed Wire Feeder - Miller Bobcat 225 Owner's Manual

SECTION 14 − MIG WELDING (GMAW) GUIDELINES

14-1. Typical MIG Process Connections Using A Voltage-Sensing Wire Feeder

Gun
Workpiece
Work Clamp Voltage
Sensing Clamp

14-2. Typical MIG Process Connections Using A Constant Speed Wire Feeder

Constant
Speed
Wire Feeder
Gun
Workpiece
Work Clamp
Voltage
Sensing Wire
Feeder
Electrode Lead
Work Lead
Regulator/
Flowmeter
115V/24V
Contactor
Gas
Electrode Lead
Work Lead
Y Weld current can damage
electronic parts in vehicles.
Disconnect
cables before welding on a
vehicle. Place work clamp as
Constant close to the weld as possible.
Current (CC)
Voltage sensing wire feeders are
Or Constant
used with constant current (CC) or
Voltage (CV)
constant voltage
Power Source
sources (14 pin receptacle not re-
quired).
If using a CC or CV welding power
source without a weld output con-
tactor, use optional secondary con-
tactor.
For GMAW, use optional gas valve.
Y Weld current can damage
Constant speed wire feeders are
Constant
used with constant voltage (CV)
Voltage
power sources having a 14-pin re-
(CV)
ceptacle.
Welding
Power
Source
Shielding
Gas
both battery
(CV) power
802 488
electronic parts in vehicles.
Disconnect both battery
cables before welding on a
vehicle. Place work clamp as
close to the weld as possible.
mig 9/99 / ST-800 357-A
OM-4434 Page 59