Service manual

2-4
March 31, 2008
TRANSTIG 200 Pi SERVICE MANUAL
2.06 Functional Block Diagrams
Figure 2-2 illustrates the functional block diagram of the Transtig 200 Pi power source.
Art # A-06029
To each control circuit
Main
Circuit
Switch
Filter
Input
Diode
Capacitor
DC Power
Primary
Voltage
Sensor
IGBT
Inverter
Thermal
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 Board
Sequence
Control
Fan Control
Circuit
Fan
Input
Power
Primary
Circuit
Sensor
Gas Control
Circuit
Solenoid
Coupling
Coil
High
Frequency
Unit
HF Unit
Control
Circuit
Figure 2-2: Transtig 200 Pi Functional Block Diagram
2.07 Transporting Methods
These units are equipped with a handle for carrying purposes.
!
WARNING
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
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.