Omron E5AK PROGRAMMABLE TYPE User Manual page 179

8.2 How to Use the Error Display
Input error
F Meaning
F Action
F Operation at er-
ror
Memory error
F Meaning
F Action
F Operation at er-
ror
A/D converter error
F Meaning
F Action
F Operation at
error
When an error has occurred, the No.1 display alternately indicates er-
ror codes together with the current display item.
This section describes how to check error codes on the display, and the
actions you must take to remedy the problem.
Input is in error.
Check the wiring of inputs, disconnections, and shorts, and check the
input type.
For control output functions, the manipulated variable matched to the
setting of the "MV at PV error" parameter (level 2 mode) is output.
Alarm output functions are activated as if the upper limit is exceeded.
Program operation is continued.
Internal memory operation is in error.
First, turn the power OFF then back ON again. If the display remains
the same, the E5AK-T controller must be repaired. If the display is re-
stored to normal, then a probable cause can be external noise affecting
the control system. Check for external noise.
Control output functions turn OFF (2 mA max. at 4 to 20 mA output,
and output equivalent to 0% in case of other outputs). Alarm output
functions turn OFF.
Internal circuits are in error.
First, turn the power OFF then back ON again. If the display remains
the same, the E5AK-T controller must be repaired. If the display is re-
stored to normal, then a probable cause can be external noise affecting
the control system. Check for external noise.
Control output functions turn OFF (2 mA max. at 4 to 20 mA output,
and output equivalent to 0% in case of other outputs). Alarm output
functions turn OFF. Program operation is stopped.
8.2 How to Use the Error Display
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