Omron S8AS, User Manual

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116
Clearing Errors
Section 7-3
• From the protection level setting display
• When an E** error has occurred
Note When the Reset Key is pressed, “
rst
” (RST) will be displayed on the seven-
segment display.
Clearing Errors by Turning Power OFF and ON
Branch outputs that have been cut off can be reconnected by turning the input
power OFF and then ON again. This function can be enabled or disabled by
setting the Reset Method Setting (RST) parameter. The default setting allows
errors to be reset by turning the power supply OFF and ON again. For other
methods, refer to the section on the Reset Key.
Identifying and Correcting the Cause of the Error
When an error code is displayed on the seven-segment display, determine
whether an error actually occurred or there is a problem with the parameter
setting.
Correcting Abnormal
Current Tripping (A11)
Errors When error code A11 (abnormal current tripping) and the current are dis-
played alternately on the seven-segment display, there are two possible
causes. Check whether the load connected to the output is too large or the
current setting is too low.
• If there are too many loads connected, split up the loads.
• If the current setting is too low, increase the setting.
• If the overcurrent is occurring momentarily, check the abnormal current
tripping type setting on page 62. The detection of short-lived abnormal
currents can be prevented by changing the setting from instantaneous
detection (detection after 10 ms) to standard detection (detection after
80 ms).
Over-temperature Output
(A30) Displayed When error code A30 (over-temperature) and the temperature are displayed
alternately on the seven-segment display, there are two possible causes.
Check whether the S8AS's internal temperature is too high or the setting of
the over-temperature output threshold is too low.
Maintenance Forecast
Monitor Output (A23)
Displayed When error code A23 (maintenance forecast monitor output) is displayed on
the seven-segment display, it indicates that the replacement time calculated
by the S8AS has fallen below the set value. The number of years left before
replacement is required will be displayed in half-year increments. Prepare to
replace the Power Supply.