Hypertherm HT4001 Plasma Arc Cutting System - Manual (Page 132)

MAINTENANCE
11-96
6-6
HT4001
Instruction Manual
HT4001 Initialization
Move circuit breaker
CB1 to ON position
Correct interlock
problem
STATUS LEDs on Interlock Display
Board (PCB5) are extinguished:
System initialization is now complete.
Line voltage to control transformer (T2)
24 VAC to:
Power Distribution board (PCB1)
12 VDC to:
RHF door interlocks (S1, S2),
Transformer and chopper temp. switches (TS2, TSW1–4),
RHF Console cooling water flow switch (FS1)
Gas Console plasma pressure switches (PS1, PS2)
120 VAC to:
AC Power light (LT1)
Transformer Fans (M5 – M7)
Chopper Fans (M1 – M4)
µP Control Board (PCB2)
24V/120V relay on Distribution Board (PCB1)
closes:
24 VAC to:
µP Control PCB (PCB2)
Terminal strip TB4
120 VAC to:
MV1 Motor
Transformers in chopper modules 1–4
Relay PCB (PCB4)
Analog PCB (PCB3)
THC Mother board PCB (PCB12)
Isolation PCB (PCB11)
Terminal strip TB4
(If Slave in System) – Serial I/O PCB (PCB10)
Start Circuit PCB (PCB14)
µP Control PCB (PCB2)
Interlocks
satisfied?
No
Yes