Amada Miyachi Unitek STA-100A, Operation Manual, Page: 42 / 154

CHAPTER 3: USING STA SERIES CONTROL FUNCTIONS
STA SERIES AC CONTROLS
3-14 990-351
NUM VALVES
–
This control will select the number of valves in the system. It is pre-set to either 4 or 12,
depending on the valve option implemented in this unit.
VALVES STATUS
– This control allows the operator to select the
Valve Status
screen, discussed in
Section IX.
MODE
– This control allows the selection of weld modes - Spot Weld and the optional Roll Spot or
Continuous Seam Weld Functions. The unit is shipped as ordered.
MORE
– Brings up
System Values Screen 2
.
System Values Screen 2
87° DELAY
- This control turns the
87° Delay
Mode ON or OFF. This mode is used with
Hypersil transformers to limit the firing of the
SCR to 87° on the first half cycle thereby
preventing saturation of the transformer. The
default setting is ON.
SYSTEM VALUES SCREEN 2
87

DELAY=ON AUTO RESET=OFF
END OUTPUT=ON ERROR OUTPUT=ON
STEP END OUTPUT=ON SET DEFAULTS

WELD ON/OFF=LOCAL MASTER CNTL=LOCAL
LOW LINE ALARM=ON UNIT ADDRESS=01
Screen 1

More

END OUTPUT
– This control turns on and off the
End Output
signal (that signal that indicates the
completion of the weld cycle). It is programmable as either
ON
or
OFF
by placing the cursor at the first
character of the parameter’s value and using the
DATA +/–
key to toggle between the two states.
STEP END OUTPUT
– This control turns on and off the
Step End Output
signal (that signal that indicates
the completion of a stepper). It is programmable as either
ON
or
OFF
by placing the cursor at the first
character of the parameter’s value and using the
DATA +/–
key to toggle between the two states. In the
ON
state, the
Step End Output
signal remains active until a
Reset
signal is received, the operator presses
the
RESET
button, or the
Step Reset
signal is received. In the
OFF
state the
Step End Output
signal
remains inactive. If the
Reset
key is pressed on the front panel or an external
Reset
is received, the error
will return after the next weld. If the unit receives an external
Step Reset
signal, the step counters are
cleared and the error does not occur until the step counts are again reached.
WELD ON/OFF
– This control determines whether the
WELD ON/OFF
button on the Control Panel or the
remote
NW1
signal will control the flow of welding current. The default is
LOCAL
, which places control
on the pushbutton switch. If
REMOTE
is selected, control is placed under the
NW1
signal. In either case,
the control NOT selected is locked out.
When set to
REMOTE
, saving any changes to the schedule or settings on the front panel will set the
Control to the
Weld Off
state. This input must then be opened and re-closed to set the
Weld On
state.
LOW LINE ALARM
– this control determines whether the
Low Line Voltage Alarm
is active.
AUTO RESET
– This control determines how the Control reacts to an internal minor error signal. When
AUTO RESET
is
OFF
, an error signal will prevent the Control from reacting to the next
Start
signal and
will inhibit an
End
signal output from the Control.