Omron E5 C Series Manual page 121

Error Displays (Troubleshooting)
When an error occurs, the No. 1 display or No. 2 display shows the error code.
Take necessary measure according to the error code, referring the following table.
Display Name
The input value exceeded the control
range.*
The input type is not set correctly.
The sensor is disconnected or short-
circuited.
The sensor is not wired correctly.
The sensor is not wired.
* Control Range
Temperature resistance
Input error
s.err
thermometer or thermocouple input:
SP Lower Limit - 20°C to SP Upper
Limit + 20°C
(SP Lower Limit - 40°F to SP Upper
Limit + 40°F)
ESIB input:
Same as specified input range.
Analog input:
Scaling range -5% to 105%
Below -1,999
[[[[
Display
range
exceeded
Above 9,999
]]]]
A/D
There is an error in the internal
converter
e333
circuits.
error
Memory There is an error in the internal
e111
error memory operation.
This error is displayed when the peak
Overcurrent
ffff
current exceeds 55.0 A.
ct1
If there is a HB or HS alarm, the No.
HB or HS
ct2
1 display will flash in the relevant
alarm
lcr1
setting level.
lcr2
"----" will be displayed for the Valve
Opening Monitor parameter if any of
the following error occurs.
• Motor calibration has not been
Potentiometer
Input Error
• The wiring of the potentiometer is
---- (Position-
proportional
Models Only) • The potentiometer input value is
Meaning
This is not an error. It
is displayed when the
control range is wider
than the display range
and the PV exceeds
the display range.
The PV is displayed
for the range that is
given on the left (the
number without the
decimal point).
performed.
incorrect or broken.
incorrect (e.g., the input is out of
range or the potentiometer has
failed).
Action
Check the wiring for input to be sure
it is wired correctly, not broken, and
not shorted. Also check the input
type.
If there are no problems in the wiring
or input type settings, cycle the
power supply.
If the display remains the same,
replace the Digital Temperature
Controller.
If the display is restored to normal,
then the probable cause is external
noise affecting the control system.
Check for external noise.
Note: For a temperature resistance
thermometer, the input is
considered disconnected if
the A, B, or B' line is broken.
-
After checking the input error, turn
the power OFF then back ON again.
If the display remains the same, the
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.
First, cycle the power supply.
If the display remains the same, the
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.
-
-
Check for the above errors.
E5@C/E5@C-T
Operation
After the error occurs and it is
displayed, the alarm output will operate
as if the upper limit was exceeded.
It will also operate as if transfer
output exceeded the upper limit.
If an input error is assigned to a
control output or auxiliary output, the
output will turn ON when the input
error occurs.
The error message will appear in the
display for the PV.
Note: 1. The heating and cooling
control outputs will turn OFF.
2. When the manual MV, MV
at stop, MV at reset, or MV
at error is set, the control
output is determined by the
set value.
Control continues and operation is
normal.
The value will appear in the display
for the PV.
Refer to the E5@C Digital Temperature
Controllers User's Manual (Cat. No.
H174) or the E5@C-T Digital
Temperature Controllers
Programmable Type User's Manual
(Cat. No. H185) for information on the
controllable range.
The control outputs, auxiliary
outputs, and transfer outputs turn
OFF. (A current output will be approx.
0 mA and a linear voltage output will
be approx. 0V.)
The control outputs, auxiliary
outputs, and transfer outputs turn
OFF. (A current output will be approx.
0 mA and a linear voltage output will
be approx. 0V.)
Control continues and operation is
normal.
The error message will appear for the
following displays.
Heater Current Value 1 Monitor
Heater Current Value 2 Monitor
Leakage Current Value 1 Monitor
Leakage Current Value 2 Monitor
The No. 1 display for the following
parameter flashes in Operation Level
or Adjustment Level.
Heater Current Value 1 Monitor
Heater Current Value 2 Monitor
Leakage Current Value 1 Monitor
Leakage Current Value 2 Monitor
However, control continues and
operation is normal.
Close control: The control output is
OFF or the value that is set for the
MV at PV Error parameter is output.
Floating control: Operation will be
normal.
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