Entron EN1000 series

ENTRON Controls, LLC. • 700120S • Page 79
6.2.1 NON-REPEAT – CYCLE MODE=
0000
0000
00 (cont.)
WELD time until the Pressure Switch closes. If the Pressure Switch remains open, the SQUEEZE
LED will flash. Once the Pressure Switch closes, the WELD time begins. Weld current is then
supplied to the welding transformer at a value programmed by the PERCENT CURRENT for a
duration programmed in WELD.
In this example, PULSATION is shown after COOL, until the number of IMPULSES has elapsed,
then moving to HOLD. HOLD time is when the electrodes are closed with no current present,
but the selected valve will still be energized. Since this is a NON-REPEAT sequence, there is
no OFF time mentioned. The valve will automatically de-energize at the end of the programmed
HOLD time.
6.2.2 REPEAT – CYCLE MODE=
0101
0101
01
When any of the 50 possible schedules, having a CYCLE MODE setting of
0101
0101
01, is initiated by a
Pilot switch, the sequence is as shown in the following diagram (Figure 6-2).
In this example, the sequence is much the same as the previous example with the exception of
no IMPULSE welding. If the initiation (foot switch) is held closed until after the OFF time, the
control will move to the beginning of SQUEEZE time and REPEAT the scheduled sequence.
Each individual sequence intended to REPEAT must be programmed separately for CYCLE
MODE
0101
0101
01 to perform a REPEAT function.
6.2.3 CHAINED – CYCLE MODE=
0202
0202
02
Scheduled sequences may be CHAINED, resulting in a weld sequence made up of several
schedules in length. A CHAINED sequence can be programmed by entering
0202
0202
02 in CYCLE
MODE. The last scheduled sequence must be a CYCLE MODE value of
0000
0000
00 (NON-REPEAT),
0101
0101
01 (REPEAT), or
0303
0303
03 (SUCCESSIVE).
If CYCLE MODE
0101
0101
01 is used in the last schedule of a CHAINED sequence, the entire chain will
be repeated if the initiation is held closed.
Figure 6-2. REPEAT sequence