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ESAB FABRICATOR 141i
TROUBLESHOOTING 6-12 Manual 0-5448
DRIVE Header Pin
Pin Function
Signal
1
+15V
+15 VDC
2
IGBT1 ,4 PWM Driver Signal
5VDC Vpk
3
IGBT2 ,5 PWM Driver Signal
5VDC Vpk
4
IGBT2 ,5 PWM Driver Signal
5VDC Vpk
5
IGBT1 ,4 PWM Driver Signal
5VDC Vpk
6
Rectified Secondary of Current Transformer TR8
-6VDC
7
Common of +15V
0VDC
Table 6-20 DRIVE Header Pin Function (Connects to IN header on Main PCB1)
WVIN Header Pin
Pin Function
Signal
1
Negative welding terminal
Negative welding voltage
2
Not used
n/c
3
Positive welding terminal
Positive welding voltage
Table 6-21 WVIN Header Pin Function (Connects to welding terminals)
IFB Header Pin
Pin Function
Signal
1
+15V power source
+15VDC
2
-15V power source
-15VDC
3
Current sensor signal
4V/ 300A
4
0V
0V
Table 6-22 IFB Header Pin Function (Connects to welding output current sensor)
SOURCE Header Pin
Pin Function
Signal
1
+24V power source
+21~25VDC
2
Common of +24V and -24V
0V
3
-24V power source
-21~25VDC
Table 6-23 SOURCE Header Pin Function (Connects to DY2 header on Main PCB1)
CR Header Pin
Pin Function
Signal
1
Burn back potentiometer Min
0V
2
Burn back potentiometer wiper
0-5VDC
3
Burn back potentiometer Max
+5VDC
Table 6-24 CR Header Pin Function (Connects to CR header on Burnback PCB5)
IGBT OT Header Pin
Pin Function
signal
1
NTC temperature sensor
0V-5V
Overtemperature
when voltage less
than 0.9v.
2
NTC temperature sensor
0V
Table 6-25 IGBT OT Header Pin Function (Connects to 47K NTC resistor)
NTCS Header Pin
Pin Function
Signal
1
Power source for NCT circuitry
12VDC between Pin 1 and pin 2
2
Power source for NCT circuitry
Table 6-26 NTCS Header Pin Function (Connects to NTCS header on Main PCB1)
Содержание fabricator 141i
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Страница 42: ...ESAB FABRICATOR 141i THEORY OF OPERATION 5 2 Manual 0 5448 Notes...
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Страница 84: ...ESAB FABRICATOR 141i KEY SPARE PARTS 9 2 Manual 0 5448 9 02 Power Source Art A 11811_AB Figure 9 2 31...
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