Tweco 6000GST Merlin Plasma Cutting CE Slave Power Supply - Manual (Page 18)

INTRODUCTION & DESCRIPTION 2-4 Manual 0-2653
the contactors, and the GAS indicator will go out.
When adequate plasma supply pressure is available
the pressure switch will close, allowing power to be
resumed for cutting.
NOTE
There is no gas pressure interlock for secondary
gas.
3. Thermal Interlock
Thermal overload sensors are located in the trans-
former, pilot resistors, and main heatsink in the power
supply. If one of these components is overheated the
appropriate switch will open, causing the tempera-
ture light to turn from green to red and shutting off
power to the main contactor. When the overheated
component cools down the switch will close again
and allow operation of the system.
G. Plasma Torches
Plasma torches are similar in design to the common au-
tomotive spark plug. They consist of negative and posi-
tive sections which are separated by a center insulator.
Inside the torch, the pilot arc is initiated in the gap be-
tween the negatively charged electrode and the positively
charged tip. Once the pilot arc has ionized the plasma
gas, the superheated column of gas flows through the
small orifice in the torch tip, which is focused on the metal
to be cut.
The Maximizer 300 Torch uses an internal closed-loop
cooling system. Deionized coolant is distributed from a
reservoir in the Power Supply through the coolant sup-
ply lead. At the torch, the coolant is circulated through
the torch tip and electrode, where the extra cooling helps
to prolong parts life. Coolant then circles back to the
power supply through the return lead.
2.05 Options And Accessories
These items can be used to customize a standard system
for a particular application or to further enhance perfor-
mance. Torch accessories are listed in the separate Torch
Instruction Manual.
NOTE
Refer to Section 6, Parts Lists, for ordering infor-
mation.
A. RC6010 Remote Control
For mechanized systems, this low profile unit pro-
vides full CNC interface capability and allows the
operator to control most system functions from a re-
mote location.
B. SC-10 Standoff Controls
For machine torch systems, the Standoff Control auto-
matically finds height and maintains torch standoff
with a high speed torch lifter motor.
NOTES
Standoff Control SC10 must be used with the Re-
mote Control RC6010.
C. Computer Control Cable Kits
For interfacing the power supply with a computer or
auxiliary control device. Available in various cable
lengths.
D. High Pressure Regulators
Available for air, oxygen, argon/hydrogen, nitrogen,
CO
2
, and water.
E. High Flow Water Shield (HFWS) Assembly
Reduces arc glare, noise, and fumes during the cut-
ting process.
F. Two Stage Air Line Filter(Standard)
Removes damaging contaminants as small as 5 mi-
crons from the plasma stream when using com-
pressed air.
G. Gas Control Module (GCM 6000)
NOTE
This Accessory is shipped with all Merlin 6000GST
Systems.
Gas Control Module allows remote setting of gas pres-
sures, flows and selection of various plasma and sec-
ondary gases. This allows one-time plumbing con-
nections of various gas/water supplies that can be
connected to the Power Supply. The operator has
complete flexibility to quickly select the best plasma
and secondary gas combinations for the metal to be
cut.
An optional Secondary Gas/Water (H
2
0) Flow Con-
trol that can be added to control the flow of gas and
water when used as the secondary. Contains control
solenoids, flowmeters and control valves for accu-
rate setting of secondary used.
NOTE
This Option must be installed on the Gas Control
Module (GCM6000) if water is to be used as the
secondary or gas flow control is required.