CHOWEL WELCOM-250Y, Руководство по обслуживанию

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WELCOM-250Y, Z MAINTENANCE MANUAL
CHOWEL
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. E11 ILLEGAL POWER FREQUENCY
This fault is checked for when the power is turned on, and alarmed
immediately, if any.
This fault indicates that the weld line frequency could not be
identified when the power is turn on.
Check whether the power supply is unstable or not.
Reset this fault by turning ON the power again.
. E12 LOW VOLTAGE IN WELD
This fault is checked for when the power is turned on, and alarmed
immediately, if any.
This fault indicates that the power has been shut OFF during the
welding or the drastic voltage drop was caused. Check whether
the weld during the power shut-off is defective or not.
. E20 MEMORY DATA ERROR
This error is checked for when the power is turned ON, and
initiation, and alarmed immediately, if any.
This error indicates that the data in the memory was destroyed
or is outside of the specified range.
Reset the whole area of the program and monitor whether it has
been used or not.
. E21 CURRENT PROGRAM ERROR
This error is checked for during the weld current control, and
alarmed when sequence ends.
This error indicates that the current set value excesses the controllable range
during the constant current control calculation processing.
Check whether the current and the weld transformer turns ratio
have been properly set or not.
. E30 NO CURRENT FAULT
This fault is checked for during the weld current control, and
alarmed when the sequence ends.
This fault indicates that the weld current was excessively low due to dirt
caught by the electrode tips or the thyristor failed in firing control.
Check whether there is dirt caught by the electrode tips or the initial
squeeze time is sufficient or not.