Error Detection - Omron C200H-TV Series Operation Manual

Error Detection

Heater Burnout Alarm
Temperature Alarm
EEPROM Error
Duplicate I/O Unit
Special I/O Unit Error
Display Error name
HB Heater burnout
indicator lit
Error displayed when an abnormality occurs in the loop currently being dis-
played.
The following bits are set when a heater burnout alarm occurs.
Wd (n+8), bit 02 = 1
Wd (n+9), bit 02 = 1
Use one of the methods below to reset a heater burnout alarm.
a) Turn the Special I/O Unit restart flag (AR0100 to AR0109) ON and then
back OFF.
b) Turn the C200H power supply OFF then back ON.
c) Set the heater burnout current limit to 00 then back to its original value.
Display Error name
ALM1 Temperature alarm 1
indicator lit
––– Temperature alarm 2
"ALM1" displays the temperature alarm 1 for the loop current selected. No indi-
cator is provided to show an ALM2 alarm.
The bits shown in the table below are set to 1 when a temperature alarm occurs.
Wd (n+8) Bit 01 =1
Bit 00 =1
Wd (n+9) Bit 01 =1
Bit 00 =1
Display Error
name
e111
EEPROM
error
The RUN indicator turns off when an EEPROM error occurs.
The Unit number duplicates the number of another Special I/O Unit. The SR bit
25415 turns ON when an Duplicate I/O Unit error occurs. Refer to AR0000 to
AR0011 for the duplicated Unit number. The C200H PC will not operate during a
duplicate I/O error.
Set the Unit number to a separate number.
I/O refresh not operating correctly between the CPU Unit and Temperature Con-
trol Unit. The Heat/Cool Temperature Control Unit is operating based on the con-
Cause
The detected heater
current is below the
heater burnout current
value.
Loop 1 heater burnout alarm
Loop 2 heater burnout alarm
Cause
The temperature is in
the alarm range set
with Alarm 1 SV.
The temperature is in
the alarm range set
with Alarm 2 SV.
Temperature alarm 1
Temperature alarm 2
Temperature alarm 1
Temperature alarm 2
Output status after error
Control output:
The transistor output or
voltage output is OFF or the
current output is less than
2 mA.
Alarm output is OFF.
Section 5
Remedy
Check the heater
and heater wiring.
Replace heater if
necessary.
Remedy
Check the
controlled conditions
Loop 1
Loop 2
Cause Remedy
Defective Replace
EEPROM the Unit
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