Arc Machines 227 User Manual

Page 28

MODEL 227

OPERATION MANUAL

Doc # 740063 Rev E

SECTION IV - SYSTEM FUNCTIONS

4.1

FUNCTIONAL DESCRIPTION, GENERAL

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) or inches per minute (IPM) depending on weld head type.

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-227.

WIRE FEED FUNCTION - The system is equipped with a motor servo

controller that provides the power and regulation for feeding Wire into the

weld puddle. The system controls the feed in Inches per Minute (IPM).

AVC FUNCTION - The standard M-227 comes with an Arc Voltage

Control (AVC) Motor Servo. A version of the M-227 is also available

without AVC. The AVC in conjunction with a weld head with an AVC

motor is used to maintain the desired Arc Gap between the Electrode and

the weld puddle.

TORCH OSCILLATION - The standard M-227 comes with an OSC Motor

Servo. A version of the M-227 is also available without OSC. The OSC
in conjunction with a weld head with an OSC motor is used to perform both
cross-seam steering during a weld and to provide welding weave across the
weld during rotation.

PULSATION - The system can rapidly change or PULSE back and forth

between two (2) different values of CURRENT, TRAVEL, WIRE FEED

and AVC. 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 or the pulsation can be

synchronized to the movement of the Torch Oscillator function.

OVERRIDES - The weld schedule programmer can set the M-227 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.

4.2