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:[02] - DOWN SLOPE.
When [02] is selected and the control initiated, DOWN SLOPE will occur after WELD. If
the control is in PULSATION MODE, the DOWN SLOPE will only occur after the last
WELD IMPULSE. For example, if the SCHEDULE calls for 5 cycles of DOWN SLOPE
and 15 cycles of weld, the DOWN SLOPE will start after WELD. The complete weld and
down slope time would add to 20 cycles. If in INTERMITTENT or CONTINUOUS SEAM
Mode DOWN SLOPE will only occur when the last initiation, with a programmed DOWN
SLOPE is removed.
6(77,1*6/23(%27720&855(17
Setting slope bottom current is accomplished by chaining together two SCHEDULES. The
first SCHEDULE is programmed with the desired slope bottom current. This value only is
programmed into the percent current function. The second SCHEDULE contains the actual
SQUEEZE Time, WELD Time, UP SLOPE Time and also any HOLD or OFF Time desired.
If no PERCENT CURRENT value is found in the preceding schedule to an UPSLOPE
schedule a value of 50 PERCENT of SLOPE TOP CURRENT will be used. In
INTERMITTENT or CONTINUOUS SEAM Mode UP SLOPE can not have a programmed
SLOPE BOTTOM CURRENT.
In the UP SLOPE example below, SLOPE BOTTOM CURRENT is set at 50%, the current
will slope up from 50 to 95% current in 5 cycles and then maintain 95% current for an
additional 15 cycles.
SCHEDULE 00
SCHEDULE 01
SQUEEZE count
....... 00 cycles.
SQUEEZE count
..... 20 cycles.
WELD/HEAT count
.... 00 cycles.
WELD/HEAT count
. . 15 cycles.
PERCENT CURRENT
. . 50 PERCENT.
PERCENT CURRENT
95 PERCENT.
HOLD count
........... 00 cycles.
HOLD count
........ 10 cycles.
OFF count
............ 00 cycles.
OFF count
.......... 00 cycles.
IMPULSES
........... 01 (no impulses).
IMPULSES
......... 01 (no impulses).
COOL count
........... 00 cycles.
COOL count
........ 00 cycles.
VALVE MODE
........ 01 (Valve #1).
VALVE MODE
...... 01 (Valve #1).
CYCLE MODE
........ 02 (chained).
CYCLE MODE
...... 00 (non repeat).
SLOPE MODE
......... 00 (no slope).
SLOPE MODE
...... 01 (up slope).
SLOPE COUNT
........ 00 cycles.
SLOPE COUNT
..... 05 cycles.
This sequence actually has a total of 20 cycles of weld as total weld time is slope time plus
weld time. To add downslope to the sequence shown above, with a default SLOPE
BOTTOM CURRENT, change hold count to 00 and cycle mode to 02 in schedule 01 and
add schedule 02 as follows:
Schedule 02
SQUEEZE count
....... 00 cycles
WELD/HEAT count
.... 01 cycles
PERCENT CURRENT
. . 95 PERCENT
HOLD count
........... 10 cycles
OFF count
............ 00 cycles
IMPULSES
........... 01 (no impulse)
COOL count
........... 00 cycles
VALVE MODE
........ 01 (valve #1)
CYCLE MODE
........ 00 (non repeat)
SLOPE MODE
......... 02 (down slope)
SLOPE COUNT
........ 10 cycles
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