Hypertherm HD4070 Rev.8 - 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