Manual 0-2972
A-5
APPENDIX
P1-1
+12vdc from Main PCB
P1-2
+12vdc from Main PCB
P1-3
Ground
P1-4
Ground
P1-5
Logic Low - W1 on Signal
P1-6
Ground
P1-7
RUN / RAPID AUTO RESTART / SET Signal
Logic Low for SET
P1-8
Logic Low = Pressure good signal
P1-9
Overtemp Signal (Logic Low)
P1-10
Ground
P1-11
Ground
P1-12
Ground
P1-13
28VAC
P1-14
Logic Low = Gas on Signal to Main PCB
P1-15
Logic Low = CSR Signal from Main PCB
P1-16
Ground
P1-17
Logic Low = DC OK Signal to Main PCB
P1-18
Logic Low = OVERTEMP Signal to Main PCB
P1-19
Logic Low = AC OK Signal to Main PCB
P1-20
Return for Torch Switch
P1-21
Logic Low = Torch Switch Signal
P1-22
+12 vdc
P1-23
To Current Control Pot
P1-24
Current Control
P1-25
Current Control Return
P1-26
Gate Drive B Return
P1-27
Gate Drive B Signal
P1-28
Gate Drive A Return
P1-29
Gate Drive A Signal
P1-30
(-) Output Signal
P1-31
Current Sense Signal
P1-32
Current Sense Signal
P1-33
Current Sense Return
P1-34
Current Sense Return
P1-35
ISense
P1-36
Tip
TP1
Logic Ground
TP2
DC OK Signal
TP3
CSR Signal
TP4
PWM Fault Shutdown
TP5
Demand Signal
TP6
Overtemp Fault
TP7
(-) Output Signal
TP8
Gate Drive A Signal
TP9
Gate Drive A Return
TP10
Gate Drive B Signal
INDICATOR LED:
D8
Inverter On
Logic Board Signals
