Amada Miyachi Unitek STA-100A, Operation Manual, Page: 56 / 154

CHAPTER 4: OPERATING INSTRUCTIONS
STA SERIES AC CONTROLS
4-8 990-351
Continuous Seam Weld (Optional on all STA Models)
1 To change the information in the schedule screen the control must be in
PROGRAM
. From the
schedule screen, press the
PROGRAM/SAVE
button so that the red
READY
indicator is off and
the green
PROGRAM
indicator is on.
2 From the schedule screen press once to select the
SHOW SYSTEM VALUES
field. Press the +
button to show the system wide values screen.
3 Press to go to the
MODE
field. Press the + key as needed to select
CONT SEAM.
4 To select the schedule you desire, press the
SCHEDULE
button, then select the schedule number
using the
DATA+/-
buttons.
5 To change weld schedule data, press to scroll through and enter the time (in cycles) desired
for
SQD, SQZ, UP1, W1, CO, UP2, W2, HO
and
OFF
. In each field, use the + or – keys to change
the time desired. See Appendix D, System Timing for a graphical representation of each of
these periods.
6 Press again and enter the weld current or percent heat desired for
W1
. See the description of
the system wide values screen for more information on the %heat and constant current weld
modes.
7 Press and enter the weld current or percent heat desired for
W2
.
8 Press to move to the
MOTORMOVE VALVE
and
SCR
selection. Use the + or – keys to select
the desired motormove valve and SCR. See the description of the system valve status screen
for more information on assigning electrode valves to SCRs.
9 Press to toggle through the available valves. Use the + or – keys to turn each valve on or off
in that schedule.
10 To select the valve ON/OFF settings, press the
VALVES
button located below the main screen,
to go to the valves screen.
11 Use the
MONITOR
screen to set welding limits (see Chapter 3, Section IV ).
12 To save the information that was just modified, press the
PROGRAM/SAVE
button. The
message
***SAVING***
will flash briefly on the top of the screen.
13 If operating in
LOCAL MODE
, press the
WELD ON/OFF
button to put the control into the ready
mode.
14 Actuate the
START
signal to begin welding.