53 - "Trg" On Displays (U). Start Button Pressed At Start-Up Or During Operating Mode Reset; 55 - Exhausted Electrode - Cebora PLASMA PROF 123 ACC Service Manual

CEBORA S.p.A.
CP161 TORCH RECOGNITION TEST
Control board (47), connector J9 = signals according to following table with torch CP161
inserted in the central adapter (41).
Torch type
CP161
♦ Check wiring between J9 control board (47) and central adapter (41).
♦ Check the supply voltage of the control board (47), taking special care for 24 Vac
voltage carrying out the CONTROL BOARD (47) POWER SUPPLY TEST of
par. 3.3.1.
♦ Check if the torch recognition connections in the torch central adapter are intact
and correspond to the CP161 torch type (see description above).
♦ With Power Source off, temporarily disconnect J9 from control board (47) and
check the resistance between terminal 2 of J1 and terminals 3, 4, 5 and 6 of J9 on
control board (47). Correct value = 7 Kohm approximately, for terminals 3, 4 and
5; junction of two diodes in both measure directions for terminal 6. If incorrect
replace the control board (47).
♦ Replace control board (47).
♦ Replace control board (47).
3.4.9 - 53 - "trG" on displays (U). Start button pressed at start-up or during operating
mode reset.
A few alarms such as "excessive temperature" stop the Power Source with the relevant signal
goes on but they are not memorized and are reset automatically when conditions return within
the allowed limits again.
To prevent the Power Source from starting suddenly due to a random reset, this situation is
detected and causes the Power Source block, with the message "trG" displayed.
To reset the regular operation, switch off Power Source, remove the start command and
switch on the Power Source again.

3.4.10 - 55 - Exhausted electrode.

This function is controlled only during cutting (transfer arc).
This alarm signals that the electrode conditions are not sufficient to guarantee the Power
Source correct operation and consequently it may be difficult to execute good quality cuts.
The following checks are recommended to solve this problem.
NOZZLE VOLTAGE TEST.
Sensor board (52), terminal J4(+) and connector J5, terminal 1(-), voltage = fig. 5.2.3b
(approximately +130 Vdc, with pilot arc lit), for a duration of 2.5 seconds (pilot arc
maximum time) with start button pressed.
3.302.269
Voltage on J9 terminals on control board (47)
2 - 3 2 - 4
24 Vac 24 Vac
Correct?
YES
NOTE
Correct?
YES
2 - 5
0 Vac
NO
NO
29
2(+) - 6(-)
-12 Vdc
12/04/2012