CHAPTER 1: DESCRIPTION
PHASEMASTER™ 6 DIRECT ENERGY WELDING CONTROL
990-083
1-5
PROGRAM
Causes the PM6 to enter the PROGRAM State so that the user can make changes to
Schedules 0 through 7.
? ?
In PROGRAM State, used to select the parameter to the right (? ) or left (? ) of the
parameter which is flashing.
RUN
Causes the PM6 to exit the PROGRAM State without saving the changed schedule. The
changed schedule will become Schedule 0 and will NOT be written to permanent
memory. If no changes are made to the schedule, then it will not be transferred to
Schedule 0. Welding is done in the RUN State.
SAVE
In the PROGRAM State, saves (writes) any schedule to permanent memory. The PM6
will then exit the PROGRAM State and return to RUN State. This key has no function
in the RUN State.
NOTE:
Instructions to "press [ ]", mean that you are to press the key described
inside the brackets. For example: "Press [PROGRAM]" means press the key
labeled PROGRAM. Press [
?
/
?
] or [
?
/
?
] means press either the
?
or the
?
(
?
or
?
) key, whichever is appropriate.
Indicators and Displays
SCHEDULE NUMBER DISPLAY - Indicates the currently selected Schedule Number. Press [
?
/
?
] in
either the RUN or PROGRAM State to select Schedules 0 through 7. When the power is switched to
ON, the PM6 will go to the RUN State and display the last Schedule saved in memory.
FORCE FIRING SWITCH INDICATOR - The red decimal point, next to the SCHEDULE NUMBER,
will light when the Force Firing Switch in the weld head closes. This feature is a useful convenience
when setting the electrode firing force.
POLARITY DISPLAY - Indicates the Polarity of the Welding Current. Press [
?
/
?
] in the PROGRAM
State to select: Positive indicated by [+]; Negative (reverse) indicated by [
)
]; Alternate indicated by [±].
SQUEEZE CYCLES - Indicates the time, in number of cycles of the AC power source, which must
elapse before the welding current starts to flow. SQUEEZE CYCLES is used for Air Operated Weld
Heads only. This display will be blank if a Manual Weld Head is connected. The Squeeze period
allows sufficient time for non- force fired air heads to close and apply the required force to the
workpiece. SQUEEZE time can be set from 0 to 99 cycles in 1 cycle increments. Since all Unitek Peco
Weld Heads are "force fired", Squeeze time is usually set to 0.
WELD CYCLES - Indicates the time, in number of cycles of the AC power source, during which
welding current will flow. WELD time can be set to either 0.5 (one- half cycle) or from 1 to 999 cycles
in 1 cycle increments. Set the Weld Period to the shortest time which produces a consistently acceptable
weld.
HOLD CYCLES - Indicates the time, in number of cycles of the AC power source, after the end of the
Weld Period for which an air actuated weld head will continue to apply force to the workpiece. HOLD
CYCLES is used for Air Operated Weld Heads only. This display will be blank if a Manual Weld Head
is connected. The HOLD Period provides time for either brazing alloy or the weld nugget, in the case of
welds which take more than 10 cycles, to solidify. HOLD Time can be set from 0 to 99 cycles in 1 cycle
increments. HOLD Time has no meaning when used with a Manual Head.
