Tweco 400i Transmig - Manual (Page 16)

TRANSMIG 400 i
2-4 July 18, 2008
2.06 Functional Block Diagrams
Figure 2-2 illustrates the functional block diagram of the Transmig 400 i power source.
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
+/-15VDC +18VDC
+24VDC +5VDC
Trouble
Sensing
Circuit
14PIN
Receptacle
(CON1)
Current
Adjustment
Circuit
Reference
Adjustment &
Mode Select Switch
Panel Circuit Board
Sequence
Control
Fan Control
Circuit
Fan
Input
Power
Primary
Circuit
Sensor
Down
Transformers
AC115V,AC24V
(T3)
Over
Current
Protect
Thermal
Detector
Output
Voltage
Detect
Circuit
Art # A-08566
Figure 2-2: Transmig 400 i 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.