SERVICE MANUAL
Transmig 165
ST
Transmig 165
ST
SERVICE MANUAL
Transmig 165
ST
Transmig 165
ST
Manual 0-5442
10-11 TROUBLESHOOTING
PWM Header Pin
Pin function
Signal
1
0VDC
0 VDC
2
Motor pwm drive signal
5 VDC pk
Table 10-20 PWM Header pin function (connects to PWM header on inverter PCB)
QF/DY Header Pin
Pin function
Signal
1
+24V (VRD positive, South Pacific Version Only)
24 VDC
2
Solenoid negative
0 VDC
3
+24V (solenoid positive)
24 VDC
4
0V
0 VDC
Table 10-21 QF/FJ Header pin function (Connects to QF/FJ header on inverter PCB)
FUNs Header Pin
Pin function
Signal
1
+24V (Fan positive)
24 VDC
2
0V (Fan negative) when fan is on
0 VDC
Table 10-22 FUNs Header pin function (not used)
DRIVE Header Pin
Pin function
Signal
1
+15V
15 VDC
2
IGBT 1 pwm drive signal, 15V p-p square wave
15 VDC pk
3
IGBT 2 pwm drive signal, 15V p-p square wave
15 VDC pk
4
IGBT 2 pwm drive signal, 15V p-p square wave
15 VDC pk
5
IGBT 1 pwm drive signal, 15V p-p square wave
15 VDC pk
6
Rectified secondary of current transformer TR8
15 VDC pk
7
0V
0 VDC
Table 10-23 DRIVE Header pin function (connects to IN header on inverter PCB)
WVIN Header Pin
Pin function
Signal
1
Positive welding terminal
positive VDC
2
No connection
n/c
3
Negative welding terminal
0 VDC
Table 10-24 WVIN Header pin function
IFB Header Pin
Pin function
Signal
1
+15V
15 VDC
2
-15V
-15 VDC
3
Current sensor signal
4
0V
0 VDC
Table 10-25 IFB Header pin function (Connects to welding output current sensor)
SOURCE Header Pin
Pin function
Signal
1
+24V
24 VDC
2
0V
0 VDC
3
-24V
-24 VDC
Table 10-26 SOURCE Header pin function (connects to DY2 header on control PCB)
CR Header Pin
Pin function
Signal
1
+5V
5 VDC
2
Wiper 10k Burnback potentiometer
0 – 5 VDC
3
0V
0 VDC
Table 10-27 CR Header pin function (connects to 10k Burnback potentiometer)
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