Tweco 200 ACDC Arcmaster(Feb2006) - Manual (Page 17)

11
2.02 Functional Block Diagram
Figure 2 illustrates the functional block diagram of the 200 ACDC-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
Secondary
IGBT
Inverter
Output
Diodes
Themal
Detector
Transformer
(HCT1)
Hall Current Coupling
Coil
Lift T ig Mode
Output Short
Sensing
Circuit
Stick Mode
VRD
Sensing
Circuit
HF-UNIT
Control
Circuit
Thermal
Sensor
Circuit
Drive
Circuit +/-15VDC +18VDC
+24VDC +5VDC
Trouble
Sensing
Circuit
Torch Control
Connection
(CON1)
Current
Adjustment
Circuit
Reference
Adjustment &
Mode select Switch
Panel Circuit Boad
Drive Circuit
DC Power
Sequence
Control Fan Control
Circuit
Gas Control
Circuit
Fan
Gas
High
Frequency
Unit
Input
Power
Figure 2. 200 ACDC Model Functional Block Diagram
2.03 Transporting Methods
This unit is equipped with a handle for carrying purposes.
WARNING 1
ELECTRIC SHOCK can kill. DO NOT TOUCH live electrical parts. Disconnect input power conductors
from de-energized supply line before moving the welding power source.
WARNING 2
FALLING EQUIPMENT can cause serious personal injury and equipment damage.
Lift unit with handle on top of case.
Use handcart or similar device of adequate capacity.
If using a fork lift vehicle, place and secure unit on a proper skid before transporting.