Gullco GK-203-400-12 - Manual (Page 12)

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The E.A.H.S. works by measuring welding current, comparing it to a target value that has
been taught by the operator and automatically adjusting the height of the welding gun to maintain
the target welding current.
To teach the target welding current:
1. Place the Manual (Teach)/Auto (Tracking) toggle switch in the Manual (Teach) position ( ).
2. Perform a weld, adjusting the welding voltage, wire feed speed, travel speed and gun
positioning until desired weld is achieved. The E.A.H.S. fine adjustment slide knob, and/or
the coarse adjustment slide switch is used to set the desired tip to work distance.
3. While welding at the desired parameters, place the Manual (Teach)/Auto (Tracking) toggle
switch in the Auto (Tracking) position ( ). The value of the welding current at this time is
recorded as the new target value as indicated by a single beep from the control.
4. Adjustments can be made to the target value, by using either the fine adjustment slide knob,
and/or the coarse adjustment slide switch during a weld with the manual (Teach)/Auto
(Tracking) toggle switch in the Auto (Tracking) position.
Once the target welding current has been taught, as described above, simply make sure that the
Manual (Teach)/Auto (Tracking) toggle switch is in the Auto (Tracking) position prior to starting new
welds, for the E.A.H.S. to use the same target value.
Fine adjustment slide knob: Provides fine slide adjustment. In manual mode each click is equal to
0.20” or 0.5mm. In auto mode it is equal to 1.6 amps when working in 0-400amp range.
Coarse adjustment slide toggle switch: Provides coarse slide adjustment. In manual and auto
mode holding to toggle switch in either direction results in a ramping slide speed up to 48 IPM
[122 cm/min].
Power L.E.D.: Whenever the E.A.H.S. is powered “ON” the red L.E.D. will be on solid. When
control displays an error code it will flash once per second until the error code is cleared, see page
13 for error codes.
Up slide indicator L.E.D.: This yellow L.E.D. is used to display the tracking movement of the slide
in the up direction in Auto mode. Any time the slide automatically adjusts the height of the torch in
this direction the L.E.D. will come on. This L.E.D. is also used for displaying error and warning
codes, see page 13 for error and warning codes.
Control status indicator L.E.D.: This three (3) colour L.E.D. (Red, Yellow Green) indicates the
tracking status of the control when in Auto mode. Red means that the control is in Auto mode but
detects no weld current. Yellow means the control is calibrating for tracking, accompanied by a one
(1) sec beep from the remote pendant. Green means the control is in Auto mode and detects
current and is automatically tracking the arc height. This L.E.D. is also used for displaying error and
warning codes, see page 13 for error and warning codes.
Down slide indicator L.E.D.: This yellow L.E.D. is used to display the tracking movement of the
slide in the down direction in Auto mode. Any time the slide automatically adjusts the height of the
torch in this direction the L.E.D. will come on. This L.E.D. is also used for displaying error and
warning codes, see page 13 for error and warning codes.