Weco Multi Power 204T Instruction Manual page 30

Cod. 006.0001.1420
08/09/2021 V.2.12
ENGLISH
- BASE TIME
○ Time during which current output is at the base value. Available with settings for SET UP, PULSED
TYPE = SLOW, the adjustment is expressed in seconds.
- Consequences of a higher value:
• The filler material is spread more evenly.
• Increase of heat-affected zone.
- DOWN SLOPE
○ Time during which the current changes from the welding value to the end value by means of a
slope. Prevents the formation of craters in the process of turning off the arc. The parameter is not
used during the welding process when the following setting is present: MULTI TACK = ON
- FINAL CURRENT
○ During electrode welding the parameter makes it possible to obtain a uniform deposit of filler ma-
terial from the start to the end of the welding process, closing the deposition crater with a current
such as to deposit a final droplet of filler material.
○ The value of this parameter can be set as a percentage of the welding current or as an absolute
value expressed in Amperes.
○ The parameter is displayed but it is not used during the welding process when the following set-
ting is present: MULTI TACK = ON
○ By keeping the torch trigger pressed during the 3rd stroke, the crater filler current is maintained
thereby ensuring optimal crater filling, until the post gas time is started by releasing the torch trig-
ger (4th stroke).
- POST GAS TIME
○ Time of post gas delivery when the welding arc is extinguished.
- Consequences of a higher value:
• More effective pickling (improved appearance of workpiece at the end of the welding pass).
• Higher gas consumption.
- Consequences of a lower value:
• Lower gas consumption.
• Oxidation of electrode tip (more difficult arc strike).
For a better understanding of the parameter functions described in the table, refer to the following dia-
gram.
I
I1
I2
I3
I4
t5 t1
30
WELD THE WORLD
t2
t3
t4
(I1) WELDING CURRENT
(I2) BASE CURRENT
(I3) FINAL CURRENT
(I4) STARTING CURRENT
(t1) UP SLOPE TIME
(t2) PEAK TIME
(t3) BASE TIME
(1/t2+t3) PULSED FREQUENCY
(t4) DOWN SLOPE TIME
(t5) PRE GAS TIME
t
(t6) POST GAS TIME
t6
Multi Power 204T