Circuit Diagram - Thermal Arc 181i FABRICATOR Service Manual

FABRICATOR 181i

6.16 Circuit Diagram

Art # A-10151
Troubleshooting
AC IN
AC IN
AC OUT
AC OUT
DC IN
DC IN
PTC
TIG GAS
J21-1
N/A
N/A
J21-2
DY1
+24V
J22-1
0V J22-2
N/A J22-3
N/A
N/A J22-4
N/A
N/A J22-5
N/A
MD
Motor Positive +24V J12-1
Motor Negative J12-2
0V
QF/FJ
J14-1
J14-2
J14-3
J14-4
NTCS
J9-1
+24V
0V
J9-2
DY2
J4-3
-24V
J4-2
0V
+24V J4-1
J2-7
J2-6
J2-5
J2-4
J2-3
J2-2
J2-1
PWM
J17-1
J17-2
J1
blue
blue
red
black
QF/DY
J13-1 +24V
white
J13-2 0V
red
J13-3 +24V
black
J13-4 0V
blue
NTCS
J8-1
white
J8-2
red
SOURCE
J3-3
white
J3-2
white
J3-1
white
DRIVE
J1-7 0V
white
Rectified secondary of current transformer tr8
J1-6
white
IGBT 1 pwm driver signal
J1-5
white
J1-4 IGBT 2 pwm driver signal
white
J1-3
IGBT 2 pwm driver signal
white
J1-2
IGBT 1 pwm driver signal
white
J1-1
+15V
white
PWM
J16-1 0V
black
Motor pwm drive signal
J16-2
red 5V DC pk
WVIN
Positive
red J15-1
N/A J15-2
N/A
J15-3 Negative
black
IFB
J18-4
red 0V DC
J18-3 Current Sensor Signal
white
J18-2
-15V
yellow
J18-1 +15V
gray
VDR ON INDICATOR
VDR OFF INDICATOR
Power Indicator
Fault Indicator
KG4
KG3
Process
Trigger
6-20
TROUBLESHOOTING
VDR Positive
Solenoid Negatiove
Solenoid Positive
J13 J15
J10 J24
MB J11
J26-2
J23-16 0V
J26-1
J23-15 5V DC
J23-14 Amps Setpoint
GUN
J23-13 Inductance pot terminal 1
J27-1
J23-12 Volts Setpoint
J27-2
+24V
J23-11 Inductance pot terminal 2
J23-10 Remote/Local switch
15V DC
J23-9
J23-8 MODE Pushbutton
J23-7 Chip Slect
J23-6 Stick Mode
J23-5 Serial display eprom
J23-4 2T/4T pushbutton
J23-3 Serial display data (CLK)
Serial display data (LOAD)
J23-2
Serial display data & eprom (D-IN)
J23-1
Remote Control Socket
Manual 0-5152
REMOTE
LOCAL
TORCH SWITCH