Tweco 15XC Merlin - Manual (Page 30)

INSTALLATION PROCEDURES 3-8 Manual 0-2251
3.5 WORK AND GROUND CONNECTIONS
Machine torch systems are equipped with shielded torch
leads to minimize RF interference from high frequency
pilot arc initiation. Follow these grounding procedures
when installing machine torch systems:
1. Connect the ground wire (from the front panel) to a
solid earth ground, which is created by driving a
copper rod approximately 7 ft (2 m) into the earth.
Locate the rod as close as possible to the power supply.
Cut the ground wire to the appropriate length.
2. The power supply and work table should be grounded
to the same earth ground. The control device should be
grounded separately to a similar earth ground.
3. To minimize RF interference, torch leads should be run
as far as possible from any CNC components, control
lines, or primary power lines.
4. Connect work ground cables as shown (Figure 3-E).
Figure 3-E Proper Work and Ground Cable Connections
Standoff Control
Console
CNC Control
Power Supply
Remote Panel
Standoff Control
Remote Panel
Earth
Ground
Power
Supply
Work
Cable
Workpiece
Work Ground
Earth
Ground
Green Cable
(Work Ground)
3-Phase
Input
A-00880