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8Error indications
This controller has a display function to indicate several types of error code shown below.
If any of the error codes is displayed, please eliminate the cause of error immediately.
After the cause is eliminated, turn off the power once, and then re-start the controller.
Error code
AL3 lamp lit
PV not displayed
Possible cause
(SV indication flickers)
Control output
Group
q Thermocouple burnt out.
w RTD (A) line burnt out.
e PV value exceeds P-SU
by 5% FS.
q The RTD line (B or C) burnt out.
w The RTD line (between A and B or
A and C ) short.
e PV value is below P-SL by 5%FS.
r 1 to 5 VDC or 4 to 20mA DC wiring
open or short.
q PV value <
-
199.9
Note) In case of RTD input, "LLLL" is
not displayed even if the tem-
perature becomes below
-
150 ˚C.
Break of the heater (when provided with
heater break alarm)
Incorrect range setting (P-SL/P-SU).
Incorrect DP13 setting.
Add 64 to set value of DP13 to display
PV.
q when the burn-out control output
is set as the lower limit
(standard): OFF or 4 mA or less
w when the burn-out control output
is set as the upper limit: ON or
20 mA or larger
Control is continued until the value
reaches
-
5% FS or less, after which
burn-out condition will occur.
Normal control
OFF or 4mA or less
Normal control
I
II
Error indications
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