Tweco QWT-120 - Manual (Page 9)

wire cutting station
3-5 sM-qWt-120 installation and opeRation
SECTION 3:
INSTAllATION AND OPERATION
1. Remove the QWT-120 Wire Trimmer from the shipping
carton.
2. Mount the QWT-120 unit onto a solid work table within
the envelope of the robot.
NOTE
the cutting path should be within reach of the
end of the welding wire, at the desired angle
of cut. the unit may be mounted in a vertical
upright position, or at an angle of up to 30°.
the mounting plate has four .406” Ø (11,03mm)
holes that allow the use of 3/8” Ø (9,53mm)
hex head bolts to secure the unit to the
worktable. Refer to figure 2.
Figure 2: Mounting Hole Location
7.12”
(180,8mm)
4.12”
(104,6mm)
8.00”
(203,2mm)
5.00”
(127mm)
Ø 0.406”
(11,03mm)
3. Lay out the hole pattern on the work table surface.
Drill the four holes and secure the QWT-120 unit to
the work table surface.
4. Plug the 120-volt AC power cord into the appropriate
receptacle.
The motor is controlled by a 24-volt DC relay circuit
built into the unit. The operational mode switch
activates the relay circuit. The unit comes with a 22/2
PVC control cable to receive the 24-volt DC signal
from the robot controller to the QWT-120 unit. Refer
to Section 4: Wiring Diagram.
5. Connect the 2 conductor control wires to the
robot controller per the robot manufacture’s
recommendations.
A three position toggle switch is located on the outer
housing of the QWT-120 unit. Refer to Figure 3.
Figure 3: Test/Off/Auto Toggle Switch
The 3-position toggle switch is used as follows:
TEST (UP) Allows the unit to function as long as
the switch is held in the UP position.
NOTE
Do not run the unit continuous, this may cause
overheating of the unit.
OFF (CENTER) Allows the unit to be turned off.
AUTO (DOWN) Allows the unit to be controlled ON or
OFF by the robot controller using the
24-volt DC signal.
6. Set the unit to the AUTO position.
7. The QWT-120 Unit is now ready to be used.