Arc Machines 415 WDR - Manual (Page 33)

Model 415
Operation Manual
Document No. 740084
Revision N
28
17. LEVEL 1 IN DWELL TIME - The amount of time the oscillator will
stay at the IN position before EXCURSION to the OUT position.
18. LEVEL 1 OUT DWELL TIME - The amount of time the oscillator
will stay at the OUT position before EXCURSION to the IN position.
5. EVENT 5: LEVEL 2 TO LAST PROGRAMMED LEVEL - As the arc is rotated around the weld
it is usually necessary to program changes in the current, pulse times, modes and rotation
speed. These changes are called LEVELS and up to 100 can be programmed for each
sequence. Each LEVEL contains the same functions and options as EVENT 4. In TIMER
MODE AUTO each LEVEL TIME sets the duration of that level. TIMER MODE MANUAL the
system will stay in a programmed level until MANUAL ADVANCED by the Operator (from the
Remote Pendant).
6. EVENT 6: DOWNSLOPE - When the last programmed LEVEL is complete the WELD
SEQUENCE will begin the process of stopping as follows:
1. Current and Oscillator DOWNSLOPE - To avoid cratering and cracking of the weld the
current and oscillator need to be reduced slowly. The last LEVEL PRIMARY-AMP
value and BACKGROUND-AMP value (if pulsed) and OSC AMPLITUDE will start to
decrease towards 0. The time it takes to reach arc cutoff (about 3 amp) is called the
DOWNSLOPE time and it is programmable.
2. WIRE STOP DELAY TIMER - At the end of the last Level the WIRE STOP DELAY time
will start counting. The WIRE will continue to feed until this time is complete. When the
wire quits feeding the wire will automatically retract (go in reverse) for the programmed
RETRACT TIME.
3. AVC STOP DELAY - At the end of the last Level the AVC STOP DELAY time will start
counting. The AVC will continue to operate until this time is complete.
NOTE
The ROTATION function does not have a STOP DELAY. The Weld Head will continue
to TRAVEL for the DOWNSLOPE time and then turn off.
7. EVENT 7: POSTPURGE - At the end of DOWNSLOPE, when the current is less than 3 amp
the arc will go out. All functions except gas flow will stop. The gas should not be stopped
until the weld and electrode are cooled enough to prevent oxidation. How long the gas
continues to flow is called the POSTPURGE TIME.
8. EVENT 8: RETURN TO HOME AND RESET - When POSTPURGE is complete the gas will
shut off. When the gas shuts off, Weld Heads with “Return to Home” functions (M-9, M-95,
M-79, etc.) will then have the rotor automatically return to the open position for removal. The
System will then reset and be ready to make another weld.