CHOWEL WELCOM-250Y, Maintenance Manual

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WELCOM-250Y, Z MAINTENANCE MANUAL
CHOWEL
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2. Fault detection
Fault is checked for at the time of power on, inactive status, start and
sequence end and alarm the detection according to its cause.
2-1 Fault detection items
The followings are the typical times, details and remedies of fault
for each fault code. Use them for troubleshooting.
. E01 CONTROLLER FAILURE
This fault is checked for when the power is turned on.
If the fault is fatal due to the detect of the memory I.C, output
to or communication with the external will be impossible.
If the controller failure indicator will be turned ON and the
communication to the external is impossible, replace the timer unit.
. E02 INITIAL POWER FAILURE
This fault is checked for when the power is turned on, and alarmed
immediately, if any.
This fault indicates that there is a trouble with the control power built
in the welding controller.
Replace the welding controller.
This fault can not be reset. To make sure of normal operation of
the new controller, turn ON the power again.
. E03 INTERNAL PARTS FAILURE
This fault is checked for when the power is turned on, and alarmed
immediately, if any.
This fault indicates that there is a trouble with some parts in the timer unit.
Replace the timer unit.
This fault can not be reset. To make sure of normal operation of
the new controller, turn ON the power again.
. E10 LOW LINE VOLTAGE
This fault is checked for when the power is turned on, and alarmed
immediately, if any.
This fault indicates that the weld line voltage dropped below the
lower limit for at least several second.
Check whether the weld line voltage matches up to the rated voltage or not.