4-7
Chapter 4
Connection
C
ONNECTING
THE
W
ELDING
P
OWER
S
OURCE
C
ONNECTION
C
HAPTER
4
4.2.4.1
Caution on connection of voltage detection cable
Voltage detection cable needs to be wired so that arc voltage can be fed back with accuracy. Be sure to
check the following for reducing the influence of inductance noise.
•
Wire the voltage detection cable for the base metal away from the cable of base metal. For easier handling,
cut the voltage detection cable for base metal side to a suitable length.
•
Wire the voltage detection cable of the base metal side close to the one at the torch side (detection wire) to
narrow the area surrounded by the two voltage detection cables.
4.2.5
Connection at TIG welding
• In using the welding power source for TIG welding, prepare a welding torch by the
customer.
• Contrary to the normal connection, the TIG welding requires connection of the welding
torch to the output terminal (base metal side). Also, connect the power cable for base
metal side to the output terminal (torch side).
• After five seconds have passed, the safety voltage (approx.15 V) is automatically
provided.
Example of adequate connection
Example of inadequate connection
Area
