Hypertherm HT4400 HySpeed Plasma Arc Cutting System - Manual (Page 113)

MAINTENANCE
5-22 HT4400 Instruction Manual
3
Relay Board LED Status
Test Preflow Mode
Note: In all Relay Board Figures, LED ON = LED OFF=
D22
Power to
Choppers
D16
Analog PCB
power
D17
Start Circuit
Assy power
(Power Supply)
D18
Pump motor
enable
D11
SV-12 Plasma
off valve
(Valve Cluster) D10
SV-8 Shield
preflow
(Valve Cluster) D13
SV-10 Plasma
preflow
(Valve Cluster)
D20
Output
Enable
+12 VDC
Relay Board LED Status
Test Cutflow Mode
D22
Power to
Choppers
D16
Analog PCB
power
D17
Start Circuit
Assy power
(Power Supply)
D18
Pump motor
enable
D12
SV-11 Plasma
cut-flow
(Valve Cluster)) D11
SV-12 Plasma
off valve
(Valve Cluster) D19
SV-9 Shield
cut-flow
(Valve Cluster)
D20
Output
Enable
+12 VDC