Error Codes And Alarm Signals; 02 - Hardware Lockup; 30 - Minimum Current Signal Error From Power Board (56) (Current Transducer Offset); 35 - No Current At Power Board (56) Output - Cebora PLASMA PROF 123 ACC Service Manual

CEBORA S.p.A.

3.4 - Error codes and alarm signals.

3.4.1 - 02 - Hardware lockup.

Block due to user data memory writing error. Replace control board (47).
3.4.2 - 30 - Minimum current signal error from power board (56) (current transducer
offset).
This alarm is displayed when there is a current signal higher than 0 with Power Source
powered but without start command.
POWER SOURCE OUTPUT CURRENT TRANSDUCER OFFSET TEST.
Control board (47), connector J3, terminals 1(+) - 3(-) = <0.05Vdc, with Power Source
powered without delivering current (output current transducer on power board (56)).
♦ Check the wiring between J3 control board (47) and J3 power board (56).
♦ With the Power Source off, temporarily disconnect J3 from control board (47),
and check resistance between terminals 1 and 3 of J3 on control board (47).
Correct value = 67 ohm. If incorrect, replace control board (47).
♦ Check the presence of supply voltage at the output current transducer on power
board (56), performing the POWER SOURCE OUTPUT CURRENT
TRANSDUCER POWER SUPPLY TEST of par. 3.3.8.
♦ Replace power board (56) and/or control board (47).
♦ Replace control board (47).

3.4.3 - 35 - No current at power board (56) output.

This code signals that during the cutting operation the output current delivered by the power
board (56) does not correspond to the reference signal generated by the control board (47). This
trouble may be caused by a fault (e.g. reduced mains voltage) and as a consequence the power
board (56) cannot reach the current value expected from the control, even if the maximum
possible current is fed.
For an analysis of the trouble, perform tests of par. 3.3.8, 3.3.9 and 3.3.10, considering that
the trouble may be caused by an error of the current transducers fitted in the power board (56)
and so see also par. 3.4.2, 3.4.4.

3.4.4 - 39 - Nozzle current transducer reading error (current transducer offset).

This alarm is displayed when a nozzle current signal detected is higher than 0 with Power
Source powered but without start command.
NOZZLE CURRENT TRANSDUCER OFFSET TEST.
Control board (47), connector J4, terminals 1(+) - 3(-) = <0.1Vdc, with Power Source
powered without delivering current (nozzle current transducer on power board (56)).
♦ Check the wiring between J2 power board (56) and J4 control board (47).
3.302.269
Correct?
YES
Correct?
YES
NO
NO
26
12/04/2012