Control card A003 functions / connectors
Control card A003´s functional blocks:
• Secondary IGBT control power stage
• Remote controller connection
• AC-TIG aux. Pulse developement
• OCV circuit
X1/1
Secondary IGBT control
X1/2
+ 5 V
X1/3
Secondary IGBT control
X1/4
- 15 V
X1/5
+ 15 V
X1/6
GND
X1/7
Remote controller set value
X1/8
-
X1/9
TIG/MMA selection from remote controller
X1/10
AC-TIG aux. Pulse control
X1/11
+ 24 V
X1/12
+ 15 V
X1/13
+ 15 V
X1/14
GND
X1/15
GND
X1/16
-
X2
AC-TIG aux. Pulse power supply (auxiliary coil)
X3/1,4
Secondary IGBT control
X3/3,6
Secondary IGBT control
X4
AC-TIG aux. Pulse power supply (auxiliary coil)
X5/1,3
Secondary IGBT control
X5/3,5
Secondary IGBT control
X7
Protective earth
X8/1
TIG/MMA selection from remote controller
X8/2
Remote controller potentiometer voltage reference
X8/3
Remote controller potentiometer "slide"
X8/4
Remote controller potentiometer ground
X10
AC-TIG aux. Pulse / OCV circuit DC +
X11
OCV circuit DC -
X12
Main transformer secondary mid-points
30
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