Amada 300 Series, Operation Manual

Page: 25 / 80

CHAPTER 2: GETTING STARTED
SERIES 300 FAST RESPONSE WELD HEAD SYSTEM
990-115 2-7
2 Set the POWER switch on the Weld Head Control rear panel to the ON (up) position. The Weld Head
Control will automatically run a self-test cycle, during which it:

Determines the downstop position (DNST) of the opposing electrode. It then resets the DNST so that it
is calibrated as 0.000. The upstop (UPST) and search (SRCH) positions are then referenced to DNST.

Verifies the calibration of the position and force
control systems.

Determines the location of the inward-most
position of the Linear Actuator output shaft
relative to DNST. The location is the maximum
UPST to which the Weld Head System can be
programmed for the current length and
placement of the electrodes.
3 At the end of the self-test, the alphanumerical RUN screen appears. The first time it appears, it will
show the factory default settings, as shown here.
If the space between the top and bottom electrodes is substantially less than 1 inch (25 mm), the default
settings for the UPST and SRCH positions will be different than those shown.
Also, the Linear Actuator head moves to the upstop position (UPST) specified by the initial positioning
schedule.
NOTE:
The head may run into the limits of inward travel, as determined during the automatic self-test
cycle. If it does, a message appears on the lowest (alarm) line of the screen. It is safe to continue
operation and correct the electrode settings later.
Setting the Upstop and Search Positions
Note on the alphanumerical RUN screen that the default positions for electrode upstop (UPST) and
electrode search (SRCH) are .800 inch (20.3 mm) and .100 inch (2.5 mm) respectively. These positions
are with respect to the position of the lower electrode, which the Weld Head Control senses during its
power up calibration cycle. You will now need to reset these values to accommodate the combined
thickness of the workpieces that you will be welding.
SCHEDULE:002 WELD: 0000000
FORCE: ↑ 1.6 lb POSITION:.000 inch
■■■■■■■■ UPST ■ SRCH ■ SQZ ■ WELD ■■ DLY ■ FWUP ■■
TIME: MED MED 10 20.0 5.0 4.0 ms
POSITION:.800 .100
inch
MINTHK: .005 FORCE: 10.0 30.0lb
◄▲▼► Select, Numbers Change  PROGRAM 