Sequence Of Operation - Miller Electric cyclomatic DWF3 Owner's Manual

SECTION 3 OPERATION
Figure 3.2, DWF–3 REAR PANEL
START DELAY: Allows for a delay between the time a weld cycle is initiated and the time when wire feeding
begins; START DELAY is presettable in 0.1 second increments, from 0.0 to 9.9 seconds.
STOP DELAY: Allows for a delay between the time when a weld cycle is terminated and the time when wire
retracts then stops feeding. STOP DELAY allows for crater fill and is variable from 0 to 9.9 seconds in 0.1 sec–
intervals.
WIRE SPEED: Digital display that indicates WIRE SPEED in inches per minute, in 0.1 inch per minute
increments.
PUSH TO SET: Used in conjunction with the SPEED control to preset wire feed rate. Pressing this switch
while rotating the speed control allows the operator to preset the wire feed rate without actually feeding wire,
thereby eliminating waste of filler wire.
SPEED CONTROL: When in the STANDARD position, wire speed is controlled by the SPEED potentiometer
located directly under the digital display on the control panel. When in the REMOTE position, wire speed is
controlled by a REMOTE signal.
3.3

SEQUENCE OF OPERATION

After the DWF–3 has been installed, make sure all cables and connectors are properly mated. Check the line
voltage selector switch on the rear panel to ensure it is set at the proper position to match the line voltage being
used. The MANUAL/REMOTE switch should be in the OFF position. Back off thumbscrew on the drive unit to
allow introduction of wire between drive rolls. Turn the power switch ON. The POWER indicator should
illuminate and the digital display should read all zeros. Adjust thumbscrew to provide contact on wire. Activate
the FORWARD Jog Switch and "guide" the filler wire into the wire drive entrance guide. The rollers will "pick
up" the wire and begin feeding. Continue feeding the wire FORWARD until the wire is in position at the end of
the guide tip. Use JOG FORWARD/REVERSE to adjust position.
Select the desired amount of START DELAY by setting the thumbwheel switches to the appropriate value. Do
the same for STOP DELAY or FEED TIME as applicable. Next, select the WIRE SPEED by pressing the
PUSH TO SET button. While holding this button in, rotate the SPEED knob until the desired WIRE SPEED is
OM-179 078 3-2