70
3
Troubleshooting
Remedies
Set the parameter of
correctly.
Correct the polarity of the input signal on the
PXR3.
Set the parameter of
to 3, and check if the tem-
perature around an ordinary temperature is displayed.
(Thermocouples B and R have a large error around ordi-
nary temperatures. However, this is not a fault.)
Ask to make adaptations on your model. Or
replace your model with a new one.
Tighten the connecting cables.
Replace the sensor with a new one. Or remove
the short-circuit.
Replace the sensor or other input devices with
new ones.
Set the parameters again so that the value of
is smaller than the value of
.
Set the parameters again so that the difference of
the set values of
and is made larger.
Set the parameters of
and
again
according to the input range table.
Set the parameters of and
again
so that the measured range is 9999 or less.
Set the parameter of to "1" or "2".
Set all the parameters again. (When the set values of the param-
eters of , , and are changed, the
set value of each parameter for which "*" is marked at the page
number of the reference page in the Parameter list, are changed.)
Set to "0", and return
to an
original value.
Set the parameter
to 0.0.
Adjust the set value of parameter
to be
suitable for the device to be controlled.
Set the parameter
correctly.
Perform the auto-tuning.
Decrease the set value of the parameters
and
gradually.
Set the parameters
,
,
and
again to be suitable for the
process.
Set the parameter again to be suitable
for the process.
Symptoms
1. The display has shown
or
.
2.
has been dis-
played.
3. A decimal point has not
been displayed.
4. The SV or the set val-
ues of some parameters
have been changed
without any operation.
5. ON/OFF control (Two-posi-
tion control) has not started.
6. ON/OFF control is not
functioning properly.
7. The Micro-controller is
not controlling prop-
erly.
Possible causes
q The setting of is not correct for
the input signals of sensors or others.
w The polarity of the input signal does not
match that of the PXR.
e Input terminals are short-circuited in ther-
mocouple B or R. (
= 4, 5)
r
The input signals and type of sensors or others
do not match those of the controller you use.
t
The connecting cables for the sensor are loose.
y A break or short-circuit occurred in the
sensor.
u The sensor or other input devices that are
connected to the PXR3 have problems.
i The set value of the parameter of
is larger than the value of
.
o The measured value is too large or too
small.
q
The value of
is set to 3277°C or more
for thermocouple and resistance bulb input.
w
The measured range (
to
) is set
to 10000 or more for voltage and current input.
"0" is set in the parameter of
.
q The parameter of
,
, or
was changed.
w When the set value of
is larger than
1000, "1" is registered for
.
0.0 is not set in the parameter
.
q The set value of parameter
is not
correct.
w
The setting of parameter
is not correct.
q The set values of the parameters
,
,
and
are not correct.
w The cycle times are too long.
e Output is limited.
r Output is not limited correctly.
Reference
pages
Page 35
Page 35
-
-
-
-
Page 36
Page 36
Page 36
Page 36
Page 38
Page 36
Page 34
Page 20
Page 23
Page 32
Page 16
Page 33
Page 56
Page 57
This section explains the judgments and remedies for problems.
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