8.2 How to Use the Error Display
E5CK
8–3
8.2 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 acĆ
tions you must take to remedy the problem.
Input error
Input is in error.
Check the wiring of inputs, disconnections, and shorts, and check the inĆ
put type.
For control output functions, the manipulated variable matched to the setĆ
ting 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.
Memory error
Internal memory operation is in error.
First, turn the power OFF then back ON again. If the display remains the
same, the E5CKĆT controller must be repaired. If the display is restored 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.
A/D converter error
Internal circuits are in error.
First, turn the power OFF then back ON again. If the display remains the
same, the E5CKĆT controller must be repaired. If the display is restored 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.
F Meaning
F Action
F Operation at er-
ror
F Meaning
F Action
F Operation at er-
ror
F Meaning
F Action
F Operation at
error
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