Gullco GP-250 - Manual (Page 14)

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Description of Programmable Parameters/Variables
The following describes the Program Variable Selector Switch settings for the GSP motor control
using Gullco’s GSP-2004-2 micro-processor chip, as rotated clockwise from zero (0) top dead
center.
P. 0 Normal Operating Position - The control needs to be in this position to allow normal
operation (top dead center).
P. 1 Gun Slide Extend Delay - This sets a delay after the activation of the optional gun
positioning slide solenoid relay, prior to activation of the optional arc signal relay, to allow
the pneumatic slide to position the welding gun before activating the arc. The variable
value range is from 00.0 to 09.9 seconds, in increments of 00.1 seconds.
P. 2 Rotation Start Delay - This sets a delay after the activation of the optional arc signal
relay, prior to starting rotation, to allow for shielding gas pre-flow and to allow the arc to
establish before starting the weld motion. The variable value range is from 00.0 to 09.9
seconds, in increments of 00.1 seconds.
P. 3 Degrees Of Rotation - This sets the total rotation angle that will take place in an
automatic cycle before the final close-down sequence of the welding cycle. The variable
value range is from 045 to 999 degrees, in increments of 001 degree (360º = 1 full rev).
P. 4 Crater-Fill/Slope-Out Delay - When the programmable Weld Cessation (P. 9) variable is
set to “1”, the Crater-Fill/Slope-Out Delay is used to keep the optional arc signal relay
energized for a programmable duration, after the rotation has stopped, providing a
crater-fill function. When the programmable Weld Cessation (P. 9) variable is set to “2”,
the Crater-Fill/Slope-Out Delay is used to keep the turntable rotating for a programmable
duration, after the arc signal has been de-activated, providing a slope-out function. The
variable value range is from 00.0 to 09.9 seconds, in increments of 00.1 seconds.
P. 5 Post Weld Delay - This sets a delay after each crater-fill or slope-out delay (described
above) prior to de-energizing the optional gun positioning slide solenoid relay, or starting
the no-weld rotation (used in stitch welding routines). This is to allow the welding gun to
remain stationary over the end of the weld for any burn-back or post-flow to occur. The
variable value range is from 00.0 to 09.9 seconds, in increments of 00.1 seconds.
P. 6 Stitch Weld (Enable/Disable) - This allows the operator to choose whether the weld will
be continuous (Off) or stitched/spaced (On). If continuous is chosen the parameters P. 7
and P. 8 will not be available to the operator and “- - -” will be displayed. The variable
setting is either On or Off.
P. 7 Stitch Weld Angle – This sets the rotation angle of each stitch weld. The variable value
range is from 001 to 999 degrees, in increments of 001 degree.
P. 8 No-Weld Angle – This sets the rotational angle of each space between stitch welds (no-
weld). The variable value range is from 001 to 999 degrees, in increments of 001
degree.
P. 9 Weld Cessation – This allows the operator to choose the closedown sequence of the
welding process. The variable setting is either:
"1" Crater-fill – Rotation stops prior to de-activation of arc signal (typical for Mig
applications).
"2" Slope-out – Arc signal de-activated prior to stopping the rotation (typical for Tig
applications).