ESAB Caddy Tig 1500i TA34, Service Manual

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WIRING DIAGRAM
0740 800 186 - 8 - © ESAB AB 2016
WIRING DIAGRAM
The power source is based on a number of function modules. These are described in the
component descriptions on the following pages. Wire numbers and component names in the
wiring diagram show to which module each component belongs.
Circuit boards within each module have names such as 15AP1 - 15AP99.
15 = module association, 1-69
AP = circuit board
1 = individual identification number, 0-99
Components within modules are named in a similar way.
Component description
Component description
1 MMC module: control panel and display board, see chapter "Description of
Operation".
2 Mains module.
2AP1 Power supply board, see chapter "Description of Operation".
2L1-2L8 Ferrite ring cores.
2QF1 Mains switch.
2XS1 Flat pin sockets. Important: to obtain a proper electric connection, the
complete cord set must be replaced if the sockets have to be replaced.
10 TIG module.
10AP1 TIG board, see chapter "Description of Operation".
10TV1 HF transformer.
10YV1 Gas valve, 230 V AC.
15 Power module.
15AP1 Power board, see chapter "Description of Operation".
15AP2 Secondary board, see chapter "Description of Operation".
15C1 Smoothing capacitor, 1000 uF.
15D1 Diode module with rectifier and freewheel diodes.
15EV1 Fan.
15L1 Inductor.
15L2 PFC Inductor (Power Factor Corrector)
15RS1 Shunt. 60 mV at 100 A.
15ST1 Thermal switch, fitted in the winding of main transformer 15TM1. See chapter
"Description of Operation".
15ST2 Thermal switch, fitted on the heat sink. See chapter "Description of
Operation".
15TM1 Main transformer.
20AP1 Controller circuit board. See the description in chapter "Description of
Operation".