Yokogawa YTA320 - Manual (Page 34)

<6. Maintenance>
6-6
IM 01C50B01-01E
6.5 Integral Indicator and Error
Display
For temperature transmitters equipped with an
integral indicator, errors in the temperature sensor
or the transmitter cause an integral indicator to call
up the applicable error code. Table 6.4 lists the error
codes and the associated corrective actions.
Table 6.4 List of Error Codes
Indicator BT200 display Cause Output operation upon error Action
N/A Good
Er-01 Output Too Low Input value is lower than the PV low
range value.
Output goes to minimum
value(–2.0%).
Check the LRV setting and
adjust.
Er-02 Output Too High Input value is higher than the PV
upper range value.
Output goes to maximum
value(105%).
Check the URV setting and
adjust.
Er-03 Sensor1 Failure Sensor1 fails or disconnects from
the terminal block.
If sensor1 is set as PV, the
burnout value is output.
When sensor backup mode is
set in YTA320, sensor2 input
is used as output.
• Check sensor for damage.
• Check terminal connection.
• If sensor backup mode is set,
refer to “Er-09”.
Er-04 Sensor2 Failure
(YTA320 only)
Sensor2 fails or disconnects from
the terminal block.
If sensor2 is set as PV, or
sensor backup mode is in
effect, sensor burnout value is
output.
• Check sensor for damage.
• Check terminal connection.
• If sensor backup mode is
set, repair wiring or replace
damaged sensors.
Er-05 S1 Signal Error Sensor1 input value greatly exceeds
the sensor measurement range.
Sensor type setting or connection
polarity may be incorrect.
Output goes to minimum
value(–2.0%) or maximum
value(105%).
• Check sensor connections.
• Check the sensor type
selected.
Er-06 S2 Signal Error
(YTA320 only)
Sensor2 input value greatly exceeds
sensor measurement range. Sensor
type setting or connection polarity
may be incorrect.
Output goes to minimum
value(–2.0%) or maximum
value(105%).
• Check sensor connections.
• Check sensor type selected.
Er-07 Amb Temp Low The ambient temperature exceeds
the lower ambient temp limit and
the specified accuracy cannot be
achieved.
Continues to operate and
output.
Use a heater to raise the
ambient temperature, or reset
to a higher level.
Er-08 Amb Temp High The ambient temperature exceeds
the upper ambient temp limit and
the specified accuracy cannot be
achieved.
Continues to operate and
output.
Take enough distance from the
source of heat, or reset to a
lower level.
Er-09 Sns Backup Start
(YTA320 only)
Sensor backup mode is in effect. Sensor2 input is used as
output. If sensor2 also fails,
the transmitter operate with
burnout settings.
Restore the status of sensor1
to normal and Enable sensor1
return parameters, or turn the
power ON again.
Er-10 Illegal PV MAP There is a problem with the PV
mapping settings.
Output status immediately
before error is retained
(HOLD).
Check the setting for PV
mapping and correct the
setting.
Er-11 Term Sns Failure Terminal block temperature sensor
failed.
Operation and output
continues.
Contact our service personnel.
Er-12 EEPROM Failure EEPROM failed. The output goes to the value
set by the hardware failure
mode jumper.
Contact our service personnel.
Er-13 CPU Failure Output side hardware failure. The output goes to the value
set by the hardware failure
mode jumper.
Contact our service personnel.
Er-14 AD Conv Failure Input circuit hardware failure. The output goes to the value
set by the hardware failure
mode jumper.
Contact our service personnel.
Er-15 Reverse Cal Fail Confirmation Calculation result is
bad.
The output goes to the value
set by the hardware failure
mode jumper.
Contact our service personnel.