I-82 Digital Controller E5CK
■ 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.
Meaning Input is in error.
Action Check the wiring of inputs, disconnections, and shorts, and check the input type and the input type jumper con-
nector.
Operation at Error For control output functions, output the manipulated variable matched to the setting of the “MV at PV error” param-
eter (level 2 mode). Alarm output functions are activated when the upper limit is exceeded.
Meaning Internal memory operation is in error
Action First, turn the power OFF then back ON again. If the display remains the same, the E5CK Controller must be re-
paired. 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.
Meaning Internal circuits are in error.
Action First, turn the power OFF then back ON again. If the display remains the same, the E5CK Controller must be re-
paired. 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.
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.
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.
Input Error
Memory Error
A/D Converter Error
Calibration Data Error
Display Range Over
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