E5AK/E5CK/E5EK
E5AK/E5CK/E5EK
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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 E5AK/E5EK Controller 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 E5AK/E5EK Controller 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.
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