Error Codes And Alarm Signals; 01 - Internal Ram Error; 02 - Eeprom Error; 10 - Malfunction In The Circuit To Detect Short-Circuits At The Output - Cebora SOUND MIG 2035/M Pulse Service Manual

CEBORA S.p.A.

3.4 - Error codes and alarm signals.

3.4.1 - 01 - Internal RAM error.

3.4.2 - 02 - EEPROM error.

Block due to software error. Replace the control board (27).

3.4.3 - 10 - Malfunction in the circuit to detect short-circuits at the output.

Upon power source start-up this test checks the operating conditions by performing a brief
test to generate the open-circuit output voltage. While this is taking place it is important that the
torch not touch the workpiece or welding bench.
The following conditions may be detected during this test:
− Output voltage present and output current present = error 54;
− Output voltage present and output current absent = correct operation;
− Output voltage absent and output current present = error 54;
− Output voltage absent and output current absent = error 10.
Error 10 indicates that a low output voltage (<45 Vdc) has been detected, with no output
current from the power source. This test is carried out only during the power source start-up.
This may be caused by an interruption in the inverter command circuits, or in the power
circuits, or in the connection between J2 control board (27) and power source output terminals
(output voltage detection line).
In case of "Error 10", carry out the open circuit operation test in par. 3.3.7.
If results are positive, replace control board (27).

3.4.4 - 14 - Microprocessor supply voltage error on control board (27).

Perform the CONTROL BOARD (27) POWER SUPPLY TEST in par. 3.3.1, paying special
attention to the +14 Vdc (alarm threshold = 11 Vdc).

3.4.5 - 20 - Absence of interlock signal on power board (26).

The "interlock" signal is provided by a jumper between terminals 3 and 4 of J6 on power
board (26), and is used to make sure that the power board (26) is connected to the control board
(27) (current feedback signal line to the primary circuit of the transformer (30)).
Check the wiring between terminals 3 and 4 of J6 on power board (26) and terminals 1 and 2
of J4 on control board (27).
Make sure that there is a short-circuit between terminals 3 and 4 of J6 on power board (26).
With power source off, temporarily disconnect connector J4 from control board (27).
Power up the power source again and check the supply voltage on J4 of control board (27),
terminals 2(+) and 1(-) = +5 Vdc. If incorrect, replace control board (27).
Replace the control (27) and/or power boards (26).

3.4.6 - 25 - Malfunction on the EPLD bus in the control board (27).

This code calls up various problems that may occur in controlling the igbt inverter on the
power board (26). These are generally those defects that cause excessive current at the primary
circuit of the transformer (30), due for example to a short-circuit at the output of the power board
(26) or in the diode group (56).
For an analysis of the problem, see "open circuit operation" par. 3.3.7 and "operation on
resistive load" par. 3.3.8.
3.302.161
28
24/03/2004