Kemppi RA User Manual

Page 23

how to find the optimal dynamics setting?
Start by setting ‘0’ and make a test weld after selecting the correct wire feed speed and

voltage values. Fine tune the welding arc by trying different values in the negative (-) and

positive (+) sides of the dynamics scale.
2. Control knob for wire feed speed or power (adaptive mode)
This control knob increases and reduces the speed of filler wire delivery or power to the

welding arc. The scale is regulated in meters per minute or amperes. There is also a graphical

display bar indicating the proportion of motor speed or power selected.
3. Control knob for voltage or arc length (adaptive mode)
This control knob increases and reduces the available output voltage of the machine to the

welding arc. The scale is regulated in volts and is also supported by a graphical display bar that

indicates the proportion of the available output voltage selected.
In adaptive mode this control knob offers minor arc voltage adjustment for fine tuning the

welding arc.
4. timer button for spot welding and cycle arc welding

SPOT /

CYCLE

The spot and cycle arc timer offers two modes of function. By pressing and selecting the SPOT

timer, you regulate the time duration for one single ‘SPOT’ welding cycle from either 0.1 to 9.9

seconds of arc time. By selecting the ‘CYCLE' arc timer you regulate the machine to a repeating

cycle of arc time and pause time. The pause time offered is 0.1 to 3 seconds. Select function by

depressing button 4. Regulation and adjustment of SPOT and CYCLE arc values are adjusted

by the voltage control (item 3). Function selection is confirmed by either one dot (SPOT TIME)

or dash line (CYCLE TIME) under the word 'Timer’ in the display.
5. selection of 2t/4t gun operating mode

2T / 4T

This button offers you two modes of welding gun functions. The selected mode is indicated as

either 2T or 4T in the display.

• in 2t mode the welding arc is started by a single press and hold of the welding gun

trigger. Welding continues whilst the trigger is held, and stops when the trigger is

released.

• in 4t mode the gun trigger is pressed and gas starts to flow. When the trigger is

released, the arc ignites. Welding continues unti the trigger is pulled and released for a

second time. This mode is useful for long welding durations.

6. selection for manual, autOmatiC or hOt spOt function

MODE

HOT SPOT

This button switches the machine from standard MIG/MAG welding mode to a specialised

process function for localised spot heating and stress relieving for metal panels.
This function is normally used in the automotive industry and light sheet fabrication. To switch

between functions, press and hold the button for 5 seconds. See further information on HOT

SPOT function later in this manual.
7. parameter display
The large illuminated parameter display is designed to provide excellent visibility of welding

values and machine settings in a variety of welding situations. The display is protected by a

polycarbonate lens fitted into the control panel housing.