Arc Machines 207 - Manual (Page 45)

MODEL 207A AND 207A-1
OPERATION MANUAL
Doc. No. 740044
Rev F
SECTION V - OPERATION
5.7
SET UP FUNCTIONS
2. SET UP FUNCTIONS IN PROGRAM MODE - If the System Mode is set to
PROGRAM these additional functions can be shown after the first two SET
UP screens.
1. START LEVEL - Right after the arc is struck an initial current is used to
stabilize the arc. This is called START LEVEL and can be programmed
for a value from 5 to 100 amperes. The START LEVEL current is only
used for a very short period of time but can make the difference between
good starts and bad starts. Always set this value as high as possible yet
still make good repeatable welds without excess penetration at the start.
2. SENSORS - The M-207A FAULT detection system (see 7.4) has an
EXTERNAL input feature that allows the user to monitor up to 3 external
functions (such as an Oxygen Analyzer) and create a M-207A FAULT if
that external feature should fail.
Pressing the F key under this will allow the user to turn any or all of the 3
Sensors ON and select whether the FAULT should occur with a LOW
input signal or HIGH input signal. Reference AMI drawing 45B072514
for pin connections and electrical signal information about High and Low.
3. PRINTER MODE - The M-207A can be set up to make a print out of the
Weld # automatically (AUTO) after every Sequence. If set to MANUAL a
print will only be made if the PRINT key is pressed after a weld sequence.
NOTE
The following SET UP functions are accessed, in PROGRAM MODE, by
pressing the NEXT SCREEN key from the third SET UP screen.
Remember they do not appear if the system mode is in OPERATE.
4. CANNED PROGRAMS - WELD #’S 71 to 100 can be LOCKED or
UNLOCKED. If LOCKED they cannot be MODIFIED, DELETED or
have new ones CREATED (even in the program mode). Even if
LOCKED they can still be copied to any available # between 1 and 70.
If UNLOCKED positions 71 to 100 become accessible to anyone with a
key for the MODE switch.
They are called CANNED programs because AMI ships the M-207A with
a few common weld procedures in these positions.
5.10