22 | P a g e
PATON
®
PSI STANDARD SERIES DC MIG/MAG TIG/MMA
5.2.2 CYCLE WELDING PROCESS - MIG / MAG FUNCTION 4T& 4T_
FUNCTION 4T and _4T
a)
the standard button mode - 4Т
b)
an alternative button mode - _4Т
We use this function when welding long welds, it works as follows. After the first press of the button on
the
MIG/MAG
holder, the control signal enters the control unit, the pre-cleaning function is activated
with shielding gas
[TIME PRE GAS]
(The gas profession is opened).
After the first release of the
MIG/MAG
button, the source switching signal and the wire feed motor are
transmitted. At this moment the welding process begins, at the same time the function of smooth voltage
rise
[TIME UP VOLTAGE
]
, and the time of increasing the wire feed speed are developed, in addition we
can start the pulse welding function. After the second press of the button, the function
[TIME DOWN
VOLTAGE]
time of sinking the wire feed speed will be activated, the shielding gas will be supplied
uninterrupted until the button is released, then the final shielding process will start with the shielding gas
[TIME POST GAS]
(the gas valve is closed with a delay).
In the alternative mode of the
_4T
button, we omit the first release of the button and this is different from
the standard
4T
mode. The control system does not wait for the first release of the
MIG/MAG
handle
button but only simultaneously activates the pre-cleaning function with shielding gas
[TIME PRE GAS]
,
The wire feed rise function and the welding process together with the voltage rise function
[TIME UP
VOLTAGE
]
- it is very similar to the
2T
button mode. What's more, after the first release of the button, the
welding process proceeds unchanged. The end of the welding process is the same as when the
4T
function is running. This mode is offered by
PATON
as above the standard setting
5.3 FUNCTION OF PRETREATMENT GAS CLEANING
This function is necessary to protect the welding zone from the harmful effects of atmospheric air and
consists in pre-cleaning the welded place with shielding gas against electric arc ignition. By default, the
purging time
[TIME PRE GAS]
is set to
0.5 seconds
, this value can be changed at any time in its sole
discretion.
The procedure for changing the values of the operational parameters of the welding unit is described in Section
6.1.
t, s
t, s
t, s
Summary of Contents for PSI 160 Standard
Page 1: ......
