E54 - Short-Circuit Between Electrode And Nozzle; E55 - Electrode Finished - Cebora PLASMA PROF 162 Service Manual

CEBORA S.p.A.
To reset this situation, shut off the power source, remove the start command and restart the
power source.

E54 - Short-circuit between electrode and nozzle.

E55 - Electrode finished.

These functions are controlled only during cutting (transfer arc).
These two alarms use the same circuits and same transmission line. The difference between the
two errors consists only of the level of the signal transmitted to the control. The troubleshooting
procedures are therefore similar.
SHORT-CIRCUIT TEST.
With power source off, torch board (68), connector J4 terminals AB and choke (43) = 0 ohm.
q
♦ Check the adapter, cable, electrode and torch nozzle; replace if worn or damaged.
DETECTION CIRCUIT TEST.
The pilot arc starts regularly.
q
♦ See par. 3.3.6. and 3.3.7.
DETECTION CIRCUIT POWER SUPPLY TEST.
HF board (15), connector J2, terminals 1 - 2 = 10 VAC.
q
♦ Check the wiring between connectors J2 on board (15) and J3 on board (8).
♦ Check fuse F2 on board (8); if broken, replace and make sure that terminals 1 - 2
of J2 on board (15) are not short-circuited. If so, replace board (15).
♦ Check the 10 VAC on terminals 0 – 10 of board (8); if missing, check the wiring
between the service transformer and board (8), or replace the service transformer
(8). If present replace the board (8).
♦ Check the adapter, cable, electrode and torch nozzle; replace if worn or damaged.
♦ Check the wiring between connectors J7 on board (62) and J4 on board (15), and between J1
on board (15) and J10 on board (62).
♦ Replace board (15).
♦ Replace board (62).
3.302.002
NOTE
Correct?
NO
YES
Correct?
YES
NO
Correct?
YES
NO
24
03/08/00