Gas console control board pcb2 -36 – Hypertherm HD4070 Rev.1 User Manual
Page 199
5-36
HyPerformance HD4070
Instruction Manual
MAINTENANCE
Gas console control board PCB2
D1
D11 D12 D13
D14
D16
D17
041657.eps
4070
.54
Always ON
U23
Gas console control PC board LED list
LED
Signal name
Function
D11
S1
Used, in combination with S2 and S3 to set state of gas console. See chart below.
D12
S2
See above
D13
S3
See above
D14
+ 5 VDC
Power indicator
D16
+ 12 VDC
Power indicator
D17
– 12 VDC
Power indicator
U23 LCD display shows the following:
– Revision number
– Inlet gas pressures
– Current operating state number
– Error messages
– Motor valve position
– Control voltage
Gas state chart: LED indicators (1 = ON, 0 = OFF)
LED
D11(S1)
D12(S2)
D13(S3)
State #
Description
0
0
0
0
All outputs OFF
0
0
1
1
Preflow
0
1
0
2
Ignition
0
1
1
3
Spare (not used)
1
0
0
4
Pierce complete
1
0
1
5
Steady state
1
1
0
6
Rampdown
1
1
1
7
Spare (not used)