Gullco GP-250 - Manual (Page 11)

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2. Programmable Weld Cessation (P. 9) = “2” (typical for Tig applications).
2-1. The optional gun slide solenoid relay (connected to CN82 of the GSP control) will be
energized and the programmable Gun Slide Extend Delay (P. 1) timing cycle will
commence. This allows time for the optional pneumatic gun slide [GP-175-030] (where
applicable) to position the welding gun before activating the arc.
2-2. Upon completion of the Gun Slide Extend Delay (P. 1), the optional arc signal relay [GK-
191-P-071] (connected to CN81 of the GSP control) will be energized and the
programmable Rotation Start Delay (P. 2) timing cycle will commence. This provides time
for any pre-flow function as well as allowing the arc to establish prior to commencing the
weld motion.
2-3. Upon completion of the Rotation Start Delay (P. 2), the weld rotation will start to travel in
the forward direction at the speed set by the Speed Adjustment knob.
2-4. If the programmable Stitch Weld parameter (P. 6) is set to Off (continuous weld), the cycle
will continue as described in section 2-12. If the Stitch Weld parameter (P. 6) is set to On
(stitch weld), the cycle will continue as described in section 2-5.
2-5. The optional arc signal relay will de-energize when the angular rotation reaches the initial
value set in the programmable Stitch Weld Angle parameter (P. 7) or every time it reaches
the sum of the initial Stitch Weld Angle (P. 7) value plus the accumulative sums of each
Stitch Weld Angle (P. 7) and No-Weld Angle (P. 8). The programmable Crater-Fill/Slope-
Out Delay (P. 4) timing cycle will commence. When the programmable Weld Cessation
variable (P. 9) 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.
2-5-1. Example, the Stitch Weld Angle parameter is set to 20º and the No-Weld Angle is
set to 40º. The weld rotation would stop at 20º, 80º, 140º, 200º etc.
2-6. Upon completion of the Crater-Fill/Slope-Out Delay (P. 4), the weld rotation will stop and
the programmable Post Weld Delay (P. 5) timing cycle will commence. This allows time
for any burn-back and or post-flow functions, prior to the table rotating to the start of the
next weld.
2-7. Upon completion of the Post Weld Delay, the no-weld rotation will start in the forward
direction at full speed.
2-8. The no-weld rotation will stop every time that the angular rotation reaches an
accumulative value of the sum of the programmable Stitch Weld Angle (P. 7) and the
programmable No-Weld Angle (P. 8). A fixed delay of 0.7 seconds will then commence.
This delay ensures that the turntable has come to a complete stop, prior to starting the
next weld.
2-8-1. Example, the Stitch Weld Angle parameter is set to 20º and the No-Weld Angle is
set to 40º. The no-weld rotation would stop at 60º, 120º, 180º, 240º etc.
2-9. Upon completion of the fixed delay, the optional arc signal relay will be re-energized and
the programmable Rotation Start Delay (P. 2) timing cycle will commence again. This