Doc No. 740123
6
MODEL 8 SERIES WELD HEAD
OPERATION MANUAL
5.0 ROTATION (SPEED) AUTO-CALIBRATION
(Contd.)
Rotation calibration potentiometer.
Fig. 5
5.2
ROTATION (SPEED) MANUAL CALIBRATION
Some power supplies do not have auto calibration software. In this
case, the weld head motor is manually calibrated by creating a weld
program that should rotate the electrode 360 degrees. ie:1 RPM for a
total of 60 seconds, 2 RPM for a total of 30 seconds, 3 RPM for
a total of 20 seconds, etc. Select a speed (RPM) and corresponding
time close to or equal to the speed that you intend on welding at to
achieve the most accurate calibration.
5.3 The power supply must be in the “TEST” mode. Create a one level
weld schedule at your selected RPM. Amperage and pulse rate
settings may be set to any value, as during rotation calibration no arc
will be established. Set rotation mode to “CONT” (continuous rotation).
Set rotation delay and downslope times to 0.0.
5.4 Add one additional level with a duration of 5 or more seconds, with the
rotation mode set to “OFF”. This additional level (with rotation off) will
hold the electrode at its stopped position allowing the operator to see if
it traveled too far or not far enough.
