Tweco 160 S Arcmaster - Manual (Page 17)

ARCMASTER ® 160 S
March 31, 2006 2-3
2.05 Description
The Thermal Arc™ ArcMaster 160 S is a self contained single-phase DC arc welding power sources with Constant Current
(CC) output characteristics. This unit is equipped with a Digital Volt/Amperage Meter and lift arc starter, and high-frequency
arc starter for use with Gas Tungsten Arc Welding (GTAW), and Shielded Metal Arc Welding (SMAW) processes. The power
source is totally enclosed in an impact resistant, fl ame resistant and non-conductive plastic case.
160A 5A (A)
(V)
OCV
18V
210A
Art # A-05037
STICK PROCESS
160A 25A (A)
(V)
OCV
10V
LIFT-TIG PROCESS
Figure 1 - ArcMaster 160 S Volt-Ampere curve
NOTE
Volt-Ampere curves show the maximum Voltage and Amperage output capabilities of the welding power source.
Curves of other settings will fall between the curves shown.
2.06 Functional Block Diagrams
Figure 2 illustrates the functional block diagram of the 160 S-power supply.
To each control circuit
Main
Circuit
Switch Filter
Input
Diode
Capacitor
DC Power
Primary
Voltage
Sensor
IGBT
Inverter
Themal
Detector
Main
Transformers
(T1)
Output
Inductor
Output
Diodes Transformer
(HCT1)
Hall Current
Lift Tig Mode
Output Short
Sensing
Circuit
Stick Mode
VRD
Sensing
Circuit
Thermal
Sensor
Circuit
Drive
Circuit +/-12VDC +18VDC
+24VDC +5VDC
Trouble
Sensing
Circuit
Torch Control
Connection
(CON1)
Current
Adjustment
Circuit
Reference
Adjustment &
Mode select Switch
Panel Circuit Boad
Sequence
Control Fan Control
Circuit
Fan
Input
Power
Primary
Circuit
Sensor
Figure 2-2: 160 S Functional Block Diagram