Common faults and solutions of UN6 water-cooled pneumatic butt welding machine

serial number

ContainsRighteousness

Fault display reason

solutionSolution

1

Thyristor pass-through

When the controller has no output, it detects that the thyristor single or double tube is conductive.

1、 Check whether the thyristor is damaged

2、 Is the wiring correct?

2

The thyristor does not conduct

When the controller outputs pulses, it detects that the thyristor single or double tube is cut off.

1、 Check whether the thyristor is damaged andAre the wiring of terminals 3, 4, 5 and 6 correct?

2、 Please power on the controller7.8 wiring swap

3

passedhot

When an external thermal protection switch is connected, the switch operates or is abnormal.

1. Whether the thermal protection device operates (whether it is really overheated)

2. Is the AA setting correct?

4

Overcurrent

Welding current is too large

1、 Is the AH setting correct (for example, the parameter setting is too small)

5

Undercurrent

Welding current is too small

1、 Is the AL setting correct (for example, the parameter setting is too small)

2、 The workpiece is not placed properly or the contact is not good

3、 The current setting value exceeds the maximum current of the transformer

6

Transformer range is too large

Sampling current is small

Replace the transformer with a smaller range

7

Memory data error

Controller parameter settings are incorrect

Check parameter settings

8

no sync signal

Sync signal lost

1. Check whether the wiring matches the wiring diagram

2、Please also add7 and 8 are swapped, 3 and 4 are swapped with 5 and 6 (i.e. 3 and 5 are swapped, 4 and 6 are swapped)