Omron E5EK-T - Error Display

E5jK-T
E5jK-T
38
How to Use the Error Display
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 that must be taken to remedy the problem.
Input Error
Meaning Input is in error .
Action Check
the wiring of inputs, disconnections, and shorts, and check the input type and the input type
jumper connector .
Operation at Error For
control output functions, output the manipulated variable matched to the setting of the “MV at PV
error” parameter (level 2 mode). Alarm output functions are activated when the upper limit is
exceeded.
Memory Error
Meaning Internal memory operation is in error
Action First, turn the power OFF then back ON again. If the display remains the same, the E5 j K-T Control -
ler
must be repaired. If the display is restored to normal, the probable cause may be external noise
affecting the control system. Check for external noise.
Operation at Error 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 .
A/D Converter Error
Meaning Internal circuits are in error .
Action First,
turn the power OFF then back ON again. If the display remains the same, the E5 j K-T Control -
ler
must be repaired. If the display is restored to normal, the probable cause may be external noise
affecting the control system. Check for external noise.
Operation at Error 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 .
Calibration Data Error
This error is output only during temperature input and is displayed for two seconds when the power is
turned ON.
Meaning Calibration data is in error .
Action
Must repair .
Operation at Error Both
control output functions and alarm output functions are active. However , note that the readout
accuracy is not assured.
Display Range Over
Meaning Though not an error , this is displayed when the process value exceeds the display range when the
control range (setting range ± 10%) is larger than the display range (–1999 to 9999).
• When less than “–1999”
• When greater than “9999”
Operation Control continues, allowing normal operation.