User Interface Board Pc3 Test Point Values - Miller Millermatic 350P Technical Manual

Always perform pre-power troubleshooting before applying power to unit (see Section 8).

9-12. User Interface Board PC3 Test Point Values

Receptacle
J3
JP5
JP6
Millermatic 350
PC3 Voltage Readings
Pin
1 Not used
2 + Voltage feedback
3 Not used
4 − Voltage feedback
1 +5 volts DC with respect to JP5-3
2 +5 volts DC with respect to JP5-3
3 dgrnd
4 dgrnd
5 +25 volts DC with respect to JP5-3
1 +33.1 volts DC with gun trigger open, 0 volts with gun trigger closed
2 +33.1 volts DC with gun trigger open, 0 volts with gun trigger closed
3 +33.1 volts DC with gun trigger open, 0 volts with gun trigger closed
4 +33.1 volts DC with gun trigger open, 0 volts with gun trigger closed
5 Gun select with respect to JP6-8
6 +5 volts DC for 50 IPM wire feed speed, 0 volts for 800 IPM wire feed speed
7 +5 volts DC for 50 IPM wire feed speed, 0 volts for 800 IPM wire feed speed
8 Gun select with respect to JP6-5
a) Tolerance −  10% unless specified
b) Reference − to circuit common
(chassis ground) unless noted
c) Triggered − means gun trigger is
pressed
Values
TM-1327 Page 67