Omron E5EK - MANUAL 2 User Manual page 130

8.2 How to Use the Error Display
Input error
' Meaning
' Action
' Operation at
error
Memory error
' Meaning
' Action
' Operation at
error
A/D converter error
' Meaning
' Action
' Operation at
error
When an error has occurred, the No.1 display alternately indicates error
codes together with the current display item.
This section describes how to check error codes on the display, and the
actions you must be taken to remedy the problem.
Input is in error.
Check the wiring of inputs, disconnections, and shorts, and check the in
put type.
For control output functions, output the manipulated variable matched to
the setting of the MV at PV error" parameter (level 2 mode). Alarm out
put functions are activated when the upper limit is exceeded.
Internal memory operation is in error.
First, turn the power OFF then back ON again. If the display remains the
same, the E5EK DRT controller must be repaired. If the display is restored
to normal, then a probable cause can be external noise affecting the con
trol system. Check for external noise.
Control output functions turn OFF (2mA max. at 4 to 20mA 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 E5EK DRT controller must be repaired. If the display is restored
to normal, then a probable cause can be external noise affecting the con
trol system. Check for external noise.
Control output functions turn OFF (2mA max. at 4 to 20mA output, and
output equivalent to 0% in case of other outputs). Alarm output functions
turn OFF.
8–3