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6 Read if the indication is abnormal.
Displays in abnormalities
This unit has a display function to indicate several abnormalities. If an abnormality occurs, eliminate the cause
of abnormality immediately. After the cause is eliminated, turn off the power once before the power is turned on.
Note : In case a measuring range of -150 to 600
°
C or -150 to 850
°
C is used for resistance bulb input, control
will be continued without “LLLL” display.
Control output
q when the burn-out control output is set for
the lower limit (standard): OFF or 4 mA or
less
w when the burn-out control output is set for
the upper limit: ON or 20 mA or larger
The control is continued.
Note) The control is continued until the value
reaches -5% FS or less.
The burn-out will take place when the
value reaches -5% FS or less.
The control is continued.
OFF or 4mA or less
Undefined (Don't use this controller
immediately.)
Display
HB lamp ON
Cause
q when the thermocouple sensor is burnt out.
w when the RTD (A) is burnt out.
e when the PV value exceeds the upper limit value of the
range +5% FS.
q when the RTD (B or C) is burnt out.
w when the RTD (between A and B, or between A and C) is
shorted. (Note)
e when the PV value is below the lower limit value of the
range -5% FS.
r when the 1 to 5 VDC wiring is opened or shorted.
q when a PV value is below -199.9.
The heater is burnt out.
When P-SL/P-SU setting is improper.
Fault in the unit
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