300
Troubleshooting by Unit Section 9-5
Temperature Input Unit
(GRT1-TS2@), contin-
ued
• Temperature input data is
not as expected, or the tem-
perature input data error is
large.
• An Off-wire condition was
detected even though there
is no Off-wire condition.
• Function allocation for the I/
O data is incorrect.
• Check that the correct tempera-
ture input data has been allo-
cated to the I/O data.
• Scaling is being performed. • When performing scaling, check
whether or not the scaling val-
ues are correct.
• If the scaling function is uninten-
tionally turned ON, turn it OFF.
• The sensor being con-
nected and the Unit’s input
type are different.
Check the input type setting.
• User adjustment error is
large.
Check the user adjustment set-
ting.
• An error in the 1/100 and
normal Display Modes.
• An error reading the sen-
sor’s decimal point position.
• The display value 100 times the
input value in 1/100 Display
Mode regardless of the selected
input type. Check that the cor-
rect display value is set in the
Unit.
The Slice I/O Terminal is not
mounted in the standard ori-
entation.
Check the mounting orientation.
Cannot set the input type with
the external switch.
• SW4 is turned OFF
(default)
• Turn SW4 ON.
User adjustment settings are
not accepted.
• Adjustment was performed
with an input that was out-
side of the acceptable set-
ting range.
• Enter the correct input resis-
tance and perform correction
again (GRT1-TS2P/TS2PK).
Enter the correct input voltage
and perform correction again
(GRT1-TS2T).
• Check the adjustment system
and correct if necessary.
Off-wire display will not go
out.
• The sensor is discon-
nected.
• The temperature is far out-
side of the sensor’s mea-
surement temperature
range.
• The input type is incorrect
for the temperature being
measured.
• Fix the sensor disconnection.
• Check the connected sensor,
input type setting, and tempera-
ture range.
• Top/valley status will not turn
ON.
• Top/valley occurrences are
not being counted.
• The hysteresis setting is
too high for the amount of
temperature change.
• Decrease the hysteresis to cor-
respond with the amount of tem-
perature change.
• Hysteresis is set to 0. • Set hysteresis to a value other
than 0.
• Top/valley function is not
enabled.
• Enable the top/valley function.
(After enabling the function, it is
necessary to reset the Configu-
rator or turn the power supply
OFF and ON.)
• Top/valley status turns ON
frequently.
• Top/valley count is higher
than expected.
• Hysteresis is set too low for
the amount of temperature
change.
• Increase the hysteresis to corre-
spon
d with the amount of tem-
perature ch
ange.
Model Details Probable cause Remedy
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