Arc Machines 227 - Manual (Page 37)

MODEL 227
OPERATION MANUAL
Doc # 740063 Rev E
SECTION IV - SYSTEM FUNCTIONS
4.3 WELD SEQUENCE
8. EVENT 8: RETURN TO HOME AND RESET - When POSTPURGE is
complete the gas will shut off. When the gas shuts off, Weld Heads with
“Return to Home” functions (M-9, M-95, M-79) will then have the rotor
automatically return to the open position for removal. The System will then
reset and be ready to make another weld.
4.4 PANEL KEYS - The following are descriptions of all active operating keys
contained on the system Main Panel (see figure 6):
1. ALL STOP KEY - Active only during weld sequence in test or weld mode.
When pressed it will stop the sequence, turn off the arc with no downslope
and start the postpurge process (see 4.3 event 7).
2. C KEY - Used for screen clear or cancel, it will end (without storing) the
screen being displayed and return to the beginning of any step. The screen
will prompt the operator to indicate what will happen if the C key is pressed.
3. CE KEY - The Clear Entry key is used to clear numbers entered with the
numeric keys before the ENTER key is pressed. Use this key when a mistake
is make using the numeric keys.
4. ENTER KEY - Used at the end of each step to indicate completion and to
move to the next step or screen.
5. F KEYS - These are function keys numbered 1 to 16. Each key is aligned
with a portion of the display and are used to activate, cycle or alter the item
displayed above or below it. Each key will alter different functions
depending on whet screen is being displayed. Use of the F keys is always
prompted by the screens.
6. L KEY - The M-227 is multi-lingual. Pressing this key will change the
display from English to French to German, etc.. The L key is always active.
7. LIB KEY - Used to access the LIBRARY (weld schedule memory/storage).
8. MANUAL PURGE KEY - Active at all times. Used for manually turning
on the gas solenoid. When ON, the gas solenoid will be energized and it
will stay ON until this key is manually pressed again.
9. METER KEY - Only one of the displays is used as a BAR GRAPH METER
during Welding. Limited functions are shown. Use this key to access the
desired meter function. Remember that meter readouts are provided for
functional troubleshooting only. They are not intended for verification of
system performance.
4.11