Tweco 100XL Plus CE PAK Master - Manuel (Page 22)

INSTALLATION 3-6 Manual 0-2813
7. Connect the ATC Adapter connectors to the power
supply adapter.
WARNING
The Shielded ATC Adapter includes two connec-
tors that are not used and must be taped out of the
way to prevent contacting the Negative / Plasma
or Pilot Leads.
8. Tighten the Through - Hole protector onto the ATC
Adapter leads.
9. Connect the torch leads male connector to the ATC
female receptacle. The connectors should push to-
gether with a very small amount of pressure. Secure
the connection by turning the locking nut clockwise
until it stops. DO NOT use the locking nut to pull the
connection together. Do not use tools to secure the
connections.
A-03627
1
2
ATC Male
Connector
ATC Adapter
Female Receptacle
Torch Leads
To
Power Supply
Torch Connection - Torch Leads with ATC Male
Connector, Power Supply with ATC Adapter
10. Check the torch for proper consumable parts.
CAUTION
The torch parts must correspond with the type of
operation. Refer to Section 4.04, Torch Parts Se-
lection.
3.08 Ground Connections For
Mechanized Applications
A. Electromagnetic Interference (EMI)
Pilot arc initiation generates a certain amount of electromag-
netic interference (EMI), commonly called RF noise. This RF
noise may interfere with other electronic equipment such as
CNC controllers, remote controls, height controllers, etc. To
minimize RF interference, follow these grounding procedures
when installing mechanized systems:
B. Grounding
1. The preferred grounding arrangement is a single point or
“Star” ground. The single point, usually on the cutting
table, is connected with 1/0 AWG (European 50 mm
2 ) or
larger wire to a good earth ground (refer to paragraph ‘C’,
Creating An Earth Ground). The ground rod must be placed
as close as possible to the cutting table, ideally less than 10
ft (3.0 m), but no more than 20 ft (6.1 m).
NOTE
All ground wires should be as short as possible.
Long wires will have increased resistance to RF
frequencies. Smaller diameter wire has increased
resistance to RF frequencies, so using a larger di-
ameter wire is better.
2. Grounding for components mounted on the cutting
table (CNC controllers, height controllers, plasma re-
mote controls, etc.) should follow the manufacturer’s
recommendations for wire size, type, and connection
point locations.
For Thermal Dynamics components it is recom-
mended to use a minimum of 10 AWG (European 6
mm
2 ) wire or flat copper braid with cross section equal
to or greater than 10 AWG connected to the cutting
table frame. The connection point must be clean bare
metal; rust and paint make poor connections. For all com-
ponents, wires larger than the recommended minimum can
be used and may improve noise protection.
3. The cutting machine frame is then connected to the
“Star” point using 1/0 AWG (European 50 mm 2 ) or
larger wire.
4. The plasma power supply work cable (see NOTE) is
connected to the cutting table at the single point “Star”
ground.
NOTE
Do Not connect the work cable directly to the
ground rod.