Jasic JT-200D Operator's Manual - Operation
Operation
Before starting any welding activity ensure that you have
suitable eye protection and protective clothing. Also take
the necessary steps to protect any persons within the
area.
MMA (DC)
After connecting the cables as above, make sure that all are
correctly installed. Switch on the mains supply to start the
machine. Select the welding mode “
” DC MMA by
pressing the key in the welding mode selecting zone on the
front panel of the machine. After adjusting all parameters
according to relevant content in this manual, MMA welding
can be carried out. When welding, the digital meter displays
the welding current, and it can also display the arc voltage if
you press the selection key in the parameter and alarm
display selecting zone.
For DC welding, the connection as mentioned above is
DCEP polarity. The operator may choose DCEP/DCEN
according to work piece and electrode application
requirement. Generally, DCEP polarity is recommended for
basic electrodes, while there is no special polarity
requirement for acid electrodes.
MMA (AC)
The only di
ff
erence from that of MMA (DC) is that the
welding mode points to “
”.
Set the amperage on the machine suitable for the electrode
being used. Please see below a guide to amperages
required. Ensure you check that you have the electrode
polarity correct.
Set the arc force current percentage as required. This can be
adjusted during welding.
TIG Welding
After making sure that all leads and cables are correctly
installed, close the power supply switch to start the
machine. Select AC square wave TIG, AC pulsed TIG, DC
TIG or DC pulsed TIG by pressing the welding mode
selecting key on the front panel of the machine, or select
welding mode such as TIG spot welding or composite
waveform TIG welding by selecting operation mode. Open
the gas valve of the cylinder, adjust the gas flow to the
proper value, select the correct cooling mode, adjust all
parameters to the proper value according to the relevant
content in this manual, and TIG welding can be carried out.
The arc ignition mode of this machine is non contact arc
ignition. During welding, the parameter display meter
displays the welding current, and it can display the arc
voltage by pressing the key in the parameter display
selecting zone.
Foot control
Foot control function is generally used in TIG mode:
Connect the foot control to the corresponding terminal on
the front panel of machine with a special cable.
Press the foot control selecting key on the front panel of the
machine to lighten the foot control LED.
Adjust the welding parameters to the proper value, and then
welding can be carried out.
When welding under foot control, TIG operation mode 0 is
used, and it has nothing to do with the current operation
mode setting.
Step on the foot control to ignite arc in non-contact arc
ignition mode. After arc is ignited successfully, the welding
current will be controlled by the foot control. The minimum
current value is 30A, while the maximum current is the preset
value.
Note: Foot control is optional. Give your requirement when
placing your order if necessary.
Application of automatic welding
Connect the computer with the communication interface
RS-485 (It is optional, and give your requirement when
placing your order if necessary.) of the machine; equip
proper software; and computer-controlled automatic welding
can be carried out. The communication protocol of
automatic control is available against payment with this
machine, while the computer software for automatic welding
should be provided by users themselves.
Press the foot control selection key on the front panel of the
machine to light the foot control LED.
Adjust the welding parameters to the proper value, and then
welding can be carried out.
When welding under foot control, TIG operation mode 0 is
used, and it has nothing to do with the current operation
mode setting.
For welder training please visit our Academy website at
www.wilkinson-welding-academy.com
21
Electrode Diameter (mm)
Recommended Welding Current (A)
1.6
44~84
2.0
60~100
2.5
80~120
3.2
108~148
4.0
140~180