Omron e5ck User Manual page 163

8.2 How to Use the Error Display
Input error
F Meaning
F Action
F Operation at er-
ror
Memory error
F Meaning
F Action
F Operation at er-
ror
A/D converter error
F Meaning
F Action
F 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 ac
tions you must take 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, the manipulated variable matched to the set
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.
Internal memory operation is in error.
First, turn the power OFF then back ON again. If the display remains the
same, the E5CK T 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.
Internal circuits are in error.
First, turn the power OFF then back ON again. If the display remains the
same, the E5CK T 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.
8.2 How to Use the Error Display
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