30 - Incorrect Setting Of The Minimum Current Threshold On The Control Board (27); 42 - Error In The Signal Of The Motor Encoder (401); 52 - Start Button Pressed During Start-Up; 53 - Start Button Pressed While Resetting From Stop Due To Temperature Beyond Allowable Limits Or Open Wire Coil Cover - Cebora SOUND MIG 2035/M Pulse Service Manual

CEBORA S.p.A.

3.4.7 - 30 - Incorrect setting of the minimum current threshold on the control board (27).

MINIMUM THRESHOLD CURRENT SETTING.
Control board (27), connector J4, terminal 4(-) and test-point TS4(+) = +360 mVdc, with
power source powered.
♦ Adjust trimmer TR1 on control board (27) to have 360 mVdc +/- 10 mV.
♦ Replace the control board (27).
♦ Correct operation.

3.4.8 - 42 - Error in the signal of the motor encoder (401).

The signal provided by the encoder built into the motor (401) is used as a speed feedback
signal to adjust the motor speed. "Error 42" indicates that the signal provided by the encoder is
lower than the reference signal generated by the control board (27), and thus the motor (401)
speed is not correct.
If the speed indicated by the encoder is greater than the speed corresponding to the reference
signal generated by the control board (27), there is no "error 42" block, since this situation may
be normally encountered while the wire is slowing or braking.
Perform the "wire feeder motor operation" test in par. 3.3.6.

3.4.9 - 52 - Start button pressed during start-up.

See START COMMAND TEST WITH TRADITIONAL TORCH and START COMMAND
TEST WITH PUSH-PULL TORCH, par. 3.3.4.
3.4.10 - 53 - Start button pressed while resetting from stop due to temperature beyond
allowable limits or open wire coil cover.
The high temperature or open wire coil cover alarms stop the power source with indication
"OPn" or "tH" on display (G), but they don't remain in memory. It is automatically reset when
the temperature falls within the allowed limits and the cover is properly closed.
It may occur that the unit resets when the start command is present; therefore, to prevent the
power source from starting suddenly due to a random reset, this situation is detected and causes a
memory block in the power source, with "Error 53" indicated on display (G).
To restore proper functioning, remove the start command, and if necessary carry out the
START COMMAND TEST WITH TRADITIONAL TORCH and START COMMAND TEST
WITH PUSH-PULL TORCH, par. 3.3.4.

3.4.11 - 54 - Short-circuit between torch and workpiece upon start-up.

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 54 indicates a possible short-circuit or isolation leak in the power circuit downstream of
the diode group (56) and choke (29).
3.302.161
Correct?
YES
NO
29
24/03/2004