Omron CRT1 - 10-2008 Operation Manual page 522

Troubleshooting
Model
Analog I/O Slave • The analog data values are
Units and Tempera- different from expected or the
ture Input Units analog data error is too large.
• A disconnection is detected
even though it is not discon-
nected.
Cannot set using external
switches.
The user adjustment and bias
compensation settings are not
accepted for the CRT1-TS04T.
The Top/Valley Detection Tim-
ing Flag will not go ON.
The Top/Valley Count Over
Flag will not go ON (Tempera-
ture Input Units only).
The Top/Valley Detection Tim-
ing Flags go ON too frequently.
The top/valley count is unex-
pectedly high for a Tempera-
ture Input Unit.
Problem
• The I/O data function alloca-
tions are not correct.
• The scaling function is oper-
ating.
• The connected Sensor is dif-
ferent from the set input type.
• The user adjustment error is
too large.
The following conditions apply
to Temperature Input Units
only.
• The setting for the 1/100 Dis-
play Mode/Normal Display
Mode is incorrect.
• The sensor's decimal point
position was read incorrectly.
The following conditions apply
to the CRT1-TS04T only.
• The Unit is mounted vertically
or face-down.
• The Unit was replaced, but
the terminal block was not
changed. (The accuracy may
be reduced if the components
are not replaced as a set.)
• SW8 is turned OFF (default).
• Attempted to calibrate with
inputs outside the setting
range.
The hysteresis setting is too
high.
The hysteresis setting is 0.
The hysteresis setting is too
low.
Cause Possible correction
• Check again that the analog
data type to be set is correctly
allocated for the I/O data.
• If using the Scaling function,
check again that the scaling
value is correct.
• Remove the Scaling function
if it has been allocated by
mistake.
• Check the input type again.
• Execute user adjustment
again.
The following conditions apply
to Temperature Input Units
only.
• In Normal Display Mode, the
display value is multiplied by
x1 or x10, depending on the
input type setting.
• In 1/100 Display Mode, the
display value is multiplied by
x100, regardless of the input
type setting. Check the set-
tings and input type again.
• Check the Unit's mounting
direction.
• Turn ON SW 8.
• Calibrate again with the cor-
rect input voltage (current).
• Change the adjustment sys-
tem if necessary.
Adjust the hysteresis setting.
Section 12-2
499