Troubleshooting; Possible Faults - ESAB PEG1 Bedienungsanleitung

TROUBLESHOOTING

TROUBLESHOOTING
Equipment
See diagram 333 232 on page 74.
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For column and boom versions see diagram 443 386 on page 78.
Universal meter
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2 types of extension cards for Euro card format:
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1.
2.
Check
that the control unit is correctly connected as shown in diagram
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333 232,
see diagram 443 386 for column and boom versions
that cables and connections, including those for external equipment,
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are undamaged and correctly connected.
that the controls are correctly set.
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that all supply voltages are correct.
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Note
that the 3 row connectors on the meter card are connected to the dis-
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play card.
that cables or circuit cards must not be disconnected while power is on.
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Wait 20 seconds after switching off before doing anything.
that the circuit card contact rows are marked as follows:
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a = nearest circuit card
b = middle row
c = Furthest from circuit card
1 = the top 3(2) connections
32 = the bottom 3(2) connections
that the system zero is connected to the shunt/electrode and does not
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carry earth voltage.

POSSIBLE FAULTS

1. Symptom Fuse A 23 on back panel blows when power is switched on.
Shorting in either motor regulator
Cause 1.1
Action Measure resistance between a18 -- a30 on both motor regulators.
If it is less than 10 ohm, replace the regulator.
Cause 1.2 Shorting in a drive or brake transistor.
Action Measure the resistance between the transistor casing and each leg individ-
ually. The resistance should be higher than 10 ohm.
dga7f1ea
Model DIN 41612 type C equipped for a--c
Model DIN 41612 type D equipped for a--c
It is possible to reverse the connections!
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