Arc Machines 207 - Manual (Page 23)

MODEL 207A AND 207A-1
OPERATION MANUAL
Doc. No. 740044
Rev F
SECTION IV - SYSTEM FUNCTIONS
4.1 FUNCTIONAL DESCRIPTION, GENERAL
4. TRAVEL FUNCTION - The system is equipped with a motor servo
controller that provides the power and regulation for rotating the arc around
the weld seam. The system controls the movement in revolutions per
minute (RPM).
NOTE
The motor servo can only work properly if the weld head being used is
equipped with a motor assembly designed for operation on the M-207A.
5. PULSATION - The system can rapidly change or PULSE back and forth
between two (2) different values of CURRENT and two different values of
TRAVEL. The normal or HIGH value is designated the PRIMARY value.
The other or LOW value is designated the BACKGROUND value.
This pulsation is done as a function of time by using the PRIMARY and
BACKGROUND PULSE TIMES to set an exact amount of time for each
PRIMARY and BACKGROUND function to occur.
6. OVERRIDES - The weld schedule programmer can set the M-207A to allow
the operator to change the value of some weld schedule functions. The
programmer can also set limits to the amount of changes the operator can
make to each function.
7. FAULT STATUS - The system continuously monitors certain functions
such as gas flow, coolant flow (if used), system temperature and input AC.
If there are any problems the system will alert the operator and in some
cases, where weld quality might be affected, the system will stop the
welding process.
8. GAS FUNCTIONS - As stated, the M-207A is intended for the GTAW
process. This process requires a welding gas (usually inert) for operation,
and the M-207A is equipped with a gas solenoid and input/output connectors
for the control of the welding (arc) gas.
9. PRINT FUNCTIONS - Built into the M-207A is a thermal Printer. The
printer allows copies of the Library and complete weld schedule to be made.
4.2