Control board pcb3 status indicators -27, Control board pcb3- status indicators – Hypertherm HD4070 Rev.8 User Manual
Page 174
MAINTENANCE
HD4070
Instruction Manual
5-27
3
Control Board PCB3- Status Indicators
Control PC Board LEDN List
LEDN1
Signal Name
Function
L
EDN1-A
160 Amp Select
LEDN1-B
80 Amp Select
LEDN1-C
40 Amp Select
LEDN1-D
20 Amp Select
Used, in combination, to set power level
LEDN1-E
10 Amp Select
LEDN1-F
5 Amp Select
LEDN1-G
2.5 Amp Select
LEDN1-H
1/10 Current, divides current by 10. Used at low amperage to disable one chopper for better function
LEDN1-I
Chopper fans ON
L
EDN1-J
Contactor
0 4 1 6 0 5 R A e p s
D13
D14
D12
D6
D5
D3
D2
D1
D4
D7
D9
A
J
Control PC Board LED List
LED
Signal Description/ Function
D1
Chopper #1 Temp OK
D2
Interlocks OK, panels in place
D3
Transformer Temp OK
D5
Power indicator, +15 Volts
D6
Power indicator, -15 Volts
D7
DC Output ON, signals choppers to turn on
D9
Chopper #2 Temp OK
D12
Current #1, current detected from chopper #1
D14
Current #2, current detected from chopper #2
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