Tweco 160 TS Arcmaster - Manual (Page 33)

ARCMASTER ® 160TS
March 31, 2006 5-3
Pulse Controls
(Peak Current)
(Base)
Back ground Current
(Pulse Width) (Pulse Frequency)
The Pulse controls are used primarily to control heat input. Pulse offers a number of advantages as follows:
1) Control puddle – size and fl uidity (especially out of position).
2) Increase penetration
3) Travel speed control
4) Better consistent quality
5) Distortion on lighter or thinner materials.
Pulse-current provides a system in which the welding current continuously changes between two levels. During the periods
of Peak current heating and fusion takes place and during the background (base) current periods, cooling and solidifi cation
take place. Pulse Width is the time in one cycle the current stays at the peak current setting. Pulse Frequency measured in
Hertz is the number of cycles per second the current travels between peak and background current settings. It is as if the foot
rheostat were moved up and down to increase and decrease the welding current on a regular basis. The faster you moved
the foot rheostat up and down the faster the frequency.