Amada Miyachi Unitek STA-100A, Руководство по эксплуатации, Страница: 54 / 154

CHAPTER 4: OPERATING INSTRUCTIONS
STA SERIES AC CONTROLS
4-6 990-351
Section IV: Operation
1 Turn power ON, either from the internal circuit breaker or the external, customer-supplied
circuit breaker or power contactor.
2 After waiting for the internal self-test, and presentation of the introductory screens, the Control
Panel will present the Schedule Screen. During this period, all LEDs will light briefly as an
indication that they are working.
3 Select the appropriate schedule for your welding procedure.
4 During welding operation, you may monitor the operation of the Control through the various
screens described in
Chapter 3, Using STA Series Controls , but you cannot modify the
schedules. If your unit has a PROGRAMMING lock, you will be unable to change the
schedules unless programming is turned ON.
5 In
Roll Spot Mode
(optional), the motor (connected to the valve designated as
the Motormove
Valve
in the schedule) moves only during
OFF
time. All other valves are held through the
OFF
time. If
OFF
time is set to 0, the motor will not move.
NOTE: Some motors require several cycles before motion begins.
6 In Continuous
Seam Weld Mode
(optional), changing the
Binary Schedule
inputs (with
Binary
Select Enabled
) will cause the Control to change schedules. There is a delay of up to 70
milliseconds for switch debounce and 5 cycles for the Control to re-compute the parameters of
the new schedule. During this time, the previous schedule will continue to operate. The
Control will then start at the beginning of
COOL
time in the second schedule.
7 In
% Heat Mode
, the conduction angle depends on both the user-programmed
% Heat
and the
power factor of the secondary circuit. Changes in that power factor can result in changes of the
measured conduction angle even though there are no programmed changes to the
% Heat
.