Tweco 400 XT Ultra-Cut Plasma Cutting System With Automated Gas Control - Manual (Page 96)

ULTRA-CUT 400 XT
4-28 OPERATION Manual 0-5306
Group 5 - Plasma High Proportional Valve (V5)
5-1 Valve open Check for open connection; Replace valve.
5-2 DPC inlet Supply pressure low Raise plasma inlet pressure; check for DMC valve not open; restriction in gas supply / hoses.
5-3 Outlet pressure too low Valve full open. Leak in plasma hose to torch; defective control valve (V5); defective pressure
sensor (PS6); DPC Control PCB
5-4 Outlet pressure low Tracking error Leak in plasma hose to torch; defective control valve (V5); defective pressure sen-
sor (PS6); DPC Control PCB
5-5 Outlet pressure too high. Valve at minimun setting. Restriction in plasma hose, torch, DPC manifold; defective control
valve (V5); defective pressure sensor (PS6); DPC Control PCB
DPC Status Code Key
Code Message Cause/Remedy
Group 6 - Plasma Low Proportional Valve (V4)
6-1 Valve open Check for open connection; Replace valve.
6-2 DPC inlet Supply pressure
low
Raise plasma inlet pressure; check for DMC valve not open; restriction in gas supply/hoses.
6-3 Outlet pressure too low Valve full open but pressure still too low. Leak in plasma hose to torch; Defective control valve (V4);
Defective pressure sensor (PS6); DPC Control PCB
6-4 Outlet pressure low Tracking error. Leak in plasma hose to torch; Defective control valve (V4); Defective pressure sensor
(PS6); DPC Control PCB
6-5 Outlet pressure Too high Valve at minimum setting but pressure still too high. Restriction in plasma hose to torch; torch or
DPC manifold; Defective control valve (V4); Defective pressure sensor (PS6); DPC Control PCB
6-6 Outlet pressure high Tracking error. Restriction in plasma hose; torch or DPC manifold; Defective control valve (V4);
Defective pressure sensor (PS6); DPC Control PCB
Group 7 - Pilot Proportional Valve (V3)
7-1 Valve open Check for open connection; Replace valve.
7-2 DPC inlet Supply pressure
low
Raise plasma inlet pressure; check for DMC valve not open; restriction in gas supply/hoses.
7-3 Outlet pressure too low Valve full open but pressure still too low. Leak in plasma hose to torch; defective control valve;
defective pressure sensor (PS6); DPC Control PCB
7-4 Outlet pressure low Tracking error. Leak in plasma hose to torch; defective control valve; defective pressure sensor
(PS6); DPC Control PCB
7-5 Outlet pressure Too high Valve at minimum setting but pressure still too high. Restriction in plasma hose, torch, DPC mani-
fold; defective control valve; defective pressure sensor (PS6); DPC Control PCB
7-6 Outlet pressure high Tracking error. Restriction in plasma hose, torch, DPC manifold; defective control valve; defective
pressure sensor (PS6); DPC Control PCB
Group 8 - Shield Gas Proportional Valve (V1)
8-1 Valve open Check for open connection; Replace valve.
8-2 DPC inlet Supply pressure
low
Raise plasma inlet pressure; check for DMC valve not open; restriction in gas supply/hoses.
8-3 Outlet pressure too low Valve full open but pressure still too low. Leak in plasma hose to torch; defective control valve;
defective pressure sensor (PS5); DPC Control PCB
8-4 Outlet pressure low Tracking error. Leak in plasma hose to torch; defective control valve; defective pressure sensor
(PS5); DPC Control PCB
8-5 Outlet pressure Too high Valve at minimum setting but pressure still too high. Restriction in plasma hose, torch, DPC mani-
fold; defective control valve; defective pressure sensor (PS5); DPC Control PCB
8-6 Outlet pressure high Tracking error. Restriction in plasma hose, torch, DPC manifold; defective control valve; defective
pressure sensor (PS5); DPC Control PCB