Jasic EVO 2.0 EM-160C, Руководство оператора

Страница: 53 / 82

53
OPERATION - MMA
Before starting any welding activity ensure that you have suitable eye protection and
protective clothing as, welding rays, spatter, smoke and high temperatures produced in the
process may cause injury to personnel.
Also take the necessary steps to protect any persons within the welding area that may cause injury too.
MMA welding
Select MMA welding mode by pressing the green arrow butting
until the MMA symbol is illuminate as shown in the image right
(circled red).
When in MMA mode you can select and adjust welding current,
hot start current and arc force parameters respectively as
described below.
MMA Welding Current Adjustment
MMA current adjustment can now be carried out via the panel
control current adjustment dial and this can be achieved by
rotating the top encoder dial
‘ A ’ (as shown right) either clockwise
or anticlockwise which will increase or decrease the welding
amperage shown on the current display along side the dial.
Please Note: Welding current adjustment can be carried out during welding.
Arc Force Current Adjustment
By default the bottom display will show the MMA voltage (see image on page 52).
To select MMA arc force, press the lower encoder button ’ B ’ (as shown above) until the arc force icon
Illuminates, you will now note that MMA voltage has been replaced on the lower display by the
arc force current details.
You can now rotate the control dial ‘ B ’ clockwise or anticlockwise which will increase or decrease the
required arc force current until the desired arc force current is shown on the display. In our example
above arc force current of 40A has been selected.
Hot Start Current Adjustment
The hot start current value is factory preset to 30A although can be adjusted within the engineers mode
back ground settings between the range of 0 ~ 60Amps.
See pages 25 and 54 for further details on adjusting the hot start current value.
VRD indicator
In MMA mode, the VRD LED will be lit to indicate that VRD is active and the machine output voltage
is 10.9V (see page 24 for further details).
The table right offers a current guide for various sizes of welding
electrode diameters versus recommended current ranges.
The operator can set their own parameters based on the type and
diameter of welding electrode and their own process requirements.
PLEASE NOTE:
•
The operator should set the parameters that meet the welding
requirements.
•
If the selections are incorrect this may lead to problems such
as an unstable arc, spatter or sticking of the welding electrode
to the work piece.
•
If the secondary cables (welding cable and earth cable) are
long, select cable with larger cross
- section to reduce the voltage drop.
Electrode Size
(mm)
Recommended
Welding Current (A)
1.0 20 ~ 60
1.6 44 ~ 84
2.0 60 ~ 100
2.5 80 ~ 120
3.2 108 ~ 148
4.0 140 ~ 180
A
B