YOKOGAWA YTA610 User manual

User’s
Manual
Manual Change No. 18-0027-E
Oct. 19, 2018
Please use this manual change with the user’s manuals listed below.
1. Applicable User’s Manual and Page
IM No. (Edition) Page Revised contents
IM 01C50T03-02EN(1)
YTA610 and YTA710
Temperature Transmitters
(BRAIN Protocol)
Add NOTE.
Add *1 and *2.
3-10 3.2.9 Burnout Function
3.2.14 Sensor Backup(for the 2-input model only)
Table 4.1 List of Alarms
Table 4.1 List of Alarms
Table 4.2 Output Operation
4.3 Self Check Function
Applicable part
4-3
4-4
Add *1 and *2.
Add *2.
Add NOTE.
4-7
4-2
3-16
Change CAUTION.
Change CAUTION.

<3. Parameter Setting>
3-10
IM 01C50T03-02EN
IMPORTANT
• The Test Output by the forced output function
is automatically canceled 10 minutes (it is
changeable by F30:RELEASE TIME setting)
after changing to MANUAL MODE. Even if the
power of the conguration tool is turned o󰀨 or if
the communication cable is disconnected during
test output execution, the Test Output state is
maintained.
• If you wish to cancel the Test Output immediately,
select the NORMAL MODE with “F10:OUTPUT
MODE”. Also, when the temperature transmitter
is turned o󰀨, the Test Output is canceled.
• If “I30:OUTPUT” is set to 4 mA or 20 mA, the
MANUAL MODE cannot be set using F10.
NOTE
If the temperature transmitter has the integral
indicator, “TEST” is displayed in the lower row
along with its output level (% indication) during test
output.
Also, “AL.70” alarm (Output Man Mode alarm) is
generated during Test Output. This informs that
the Test Output is in progress; this is not abnormal.
3.2.9 Burnout Function
(1) Setting the output state at sensor burnout
If a sensor mapped to the PV value is broken or if
it has become disconnected from the terminal, you
can set the output state.
The following shows the setting parameters related
to the sensor burnout.
Parameter Settings Remarks
E40:
BURN OUT
Operation setting
of burnout
function
HIGH (21.6 mA)
LOW (4 mA)
USER (The value
set in E41 or
E42)
OFF (Hold with
previous output
value)
E41:
BURN OUT mA
Specify the
burnout output in
mA when “USER”
is selected.
It is also reected
in E42
E42:
BURN OUT %
Specify the
burnout output
in % format
when “USER” is
selected.
Also reected in
E41
* Either E41 or E42 can be set, and they are reected
mutually.
If a sensor is burnt out, alarm AL.09, AL.10 to AL.13, or
AL.22 occurs.
CAUTION
There is a time lag between sensor failure and
sensor abnormality detection.
Since the failed measurement value is output, the
current output also becomes undefined.
When an error is detected, it becomes the output
set with this parameter.
However, when sensor burnout is set to OFF, it
may be held with indefinite measurement value,
so please understanding this point.
(2) Display of output state of hardware
abnormal value
Parameter
name Display Description
E43:TX
FAILURE
HIGH:
110% (21.6 mA)
LOW:
-5% (3.2 mA)
The output state
at hardware
abnormality
setting can be set
by the slide switch
of the MAIN
assembly.
NOTE
Even if abnormality or disconnection of the
terminal block temperature sensor occurs,
AL22 may not be output and AL04 may be
generated.

<3. Parameter Setting>
3-16
IM 01C50T03-02EN
3.2.13 Output Adjustment
The Output Adjustment function adjusts analog
output values. When a precision ammeter (for
calibration) is connected, when the 0% and 100%
are output, and if there is a deviation in PV value,
the Output Adjustment is executed.
Use the following parameters for adjustment
purposes.
Parameter Usage
I30:OUTPUT Sets the Output mode. Set the analog
output to NORMAL (Normal Output), 4
mA, or 20 mA.
I31:OUT
ZERO
Output adjustment: Zero-point
adjustment
I32:OUT GAIN Output adjustment: Gain point
adjustment
I33:OUT ADJ
CLR
Output adjustment: Clear of data
[Adjustment method]
(1) Write “4 mA” in “I30:OUTPUT”, and output 4 mA
current.
(2) Read the actual output PV value using the
precision ammeter for calibration.
(3) Write the PV value that was read in Step (2), in
“I31:OUT ZERO”.
If only the zero-point adjustment is required,
skip Steps (4), (5) and (6), and proceed to Step
(7).
(4) Write “20 mA” in “I30:OUTPUT”, and output 20
mA current.
(5) Read the actual output PV value using the
precision ammeter for calibration.
(6) Write the PV value that was read in Step (5), in
“I32:OUT GAIN”.
(7) Write “NORMAL” in “I30:OUTPUT”, and return
to the normal output.
3.2.14 Sensor Backup (for the 2-input
model only)
If Sensor1 has failed, the Sensor Backup function
automatically uses Sensor2 as output.
Even if Sensor1 is recovered during backup
operation, Sensor2 will continue to be used until
the backup operation is reset by the parameter
or by switching the power OFF. If Sensor2 has
failed during backup operation, the temperature
transmitter generates an AL.24 “Backup Sns2 Fail”
alarm and outputs the sensor burnout.
(1) Setting the sensor backup function
(1) Set the “sensor type” and “number of wire
connections” of Sensor1 and Sensor2. If
Sensor1 and Sensor2 must measure the same
target (both should measure the temperature or
voltage).
(2) Set an alarm mask appropriately.
Setting
parameter
Target
Alarm
Default
value
Setting
value
K10:S1 FAIL
MASK
AL.10 S1
Failure
NO MASK NO MASK
K11:S2 FAIL
MASK
AL.11 S2
Failure
NO MASK NO MASK
K12:S1
SHRT MASK
AL.12 S1
Short
MASK MASK/
NO MASK
K13:S2
SHRT MASK
AL.13 S2
Short
MASK MASK/
NO MASK
K23:BKUP
S1 MASK
AL.23 Backup
S1 Fail
NO MASK NO MASK
K24:BKUP
S2 MASK
AL.24 Backup
S2 Fail
NO MASK NO MASK
IMPORTANT
Always set “K10:S1 FAIL MASK”, “K11:S2 FAIL
MASK”, “K23:BKUP S1 MASK”, and “K24:BKUP
S2 MASK” parameters to NO MASK.
To activate the Sensor Backup function even if
the sensor short-circuit is detected, set "K12:S1
SHRT MASK" and "K13:S2 SHRT MASK" to
"NO MASK". If the Sensor Backup function is not
required when a short-circuit occurs, set them to
"MASK".
CAUTION
There is a time lag between sensor failure and
sensor abnormality detection.
Since the failed measurement value is output, the
current output also becomes undefined.
For this reason, until failure of Sensor 1 switches
to Sensor 2, or ”Output state at sensor burnout”
due to failure of Sensor 2 The output becomes
undefined until switching to the output.
When an abnormality is detected, it is output
according to the measured value of Sensor 2 or
"Output state at sensor burnout".
(3) Set the PV mapping to the Sensor Backup
function.
Setting
parameter Setting value
B10:PV is Sensor Backup
For details about mapping, refer to Section 3.2.3.
"Process variable mapping".

<4. Self-Diagnostics>
4-2
IM 01C50T03-02EN
Table 4.1 Alarm List
Indicator
display
BRAIN conguration
tool display Cause Output operation
upon error Action
AL.00 CPU Failure The main CPU has failed. Data output and
communication do not
occur if the transmitter
has failed.
Device Replacement
AL.01 Snsr NV Failure CRC mismatching of the
sensor's non-volatile memory
has occurred, or normal data
wiring has failed.
Data output and
communication
are permitted if the
transmitter has failed.
AL.02 Temp NV Failure CRC mismatching of TEMP
ASSY non-volatile memory has
occurred, or Write/Read Verify
mismatching has occurred.
(System cannot start up
normally.)
AL.03 AD Conv Failure Hardware failure at input side
AL.04*1 Main R-Calc Fail Mismatching of MAIN ASSY
CPU inverse computation has
occurred.
AL.05 Temp R-Calc Fail Mismatching of TEMP ASSY
CPU inverse computation has
occurred.
AL.06 Temp Volt Fail Abnormal TEMP ASSY power
voltage
AL.07 Comm NV Fail CRC mismatching of
communication non-volatile
memory has occurred, or
normal data wiring has failed.
AL.08 Temp NV Warning CRC mismatching of TEMP
ASSY non-volatile memory has
occurred, or Write/Read Verify
mismatching has occurred.
(System can start up but may
fail.)
The output continues.
AL.09 Int Comm Fail Internal communication error The output and
communication for
sensor burnout are
permitted.
AL.10 S1 Failure The Sensor1 input circuit is
open or disconnected from the
terminal.
See Table 4.2. • Check the
soundness of the
temperature sensor.
• Check the sensor
connection.
AL.11 S2 Failure The Sensor2 input circuit is
open or disconnected from the
terminal.
AL.12 S1 Short Sensor1 has shorted.
AL.13 S2 Short Sensor2 has shorted.
AL.14 S1 Corrosion Sensor1 has corroded. Normal operation Check the sensors,
terminals, and cables.
AL.15 S2 Corrosion Sensor2 has corroded. Normal operation
AL.20 S1 Signal Error The Sensor1 input has error Normal operation • Check the
soundness of the
temperature sensor.
• Check the sensor
type.
AL.21 S2 Signal Error The Sensor2 input has error Normal operation
AL.22*2 Term Sensor Fail The terminal block temperature
is abnormal. The terminal block
temperature sensor has failed,
or its circuit is open.
See Table 4.2. Device Replacement

<4. Self-Diagnostics>
4-3
IM 01C50T03-02EN
Indicator
display
BRAIN conguration
tool display Cause Output operation
upon error Action
AL.23 Backup S1 Fail Sensor1 has failed during
sensor backup, and the Sensor2
data is output.
Output the backup side
data. If the backup side
sensor has also failed,
data is output by the
burnout setting.
Check the soundness of
Sensor1.
AL.24 Backup S2 Fail Sensor2 has failed during
sensor backup.
Normal operation Check the soundness of
Sensor2.
AL.25 Sensor Drift Sensor drift Normal operation Check the soundness of
the sensor.
AL.26 S1 Temp Cycle Temperature cycle count of
Sensor1 has exceeded the
threshold.
Normal operation Reset the temperature
cycle count.
AL.27 S2 Temp Cycle Temperature cycle count of
Sensor2 has exceeded the
threshold.
Normal operation Reset the temperature
cycle count.
AL.30 Output Too Low The PV value has dropped
below the lower limit.
Lower limit: 3.68 mA
(-2%)
Check and correct the
lower limit setting.
AL.31 Output Too High The PV value has exceeded the
upper limit.
Upper limit: 20.8 mA
(105%)
Check and correct the
upper limit setting.
AL.40 S1 Temp Low The measurement temperature
of Sensor1 is too low.
Normal operation Check the sensor type.
AL.41 S1 Temp High The measurement temperature
of Sensor1 is too high.
Normal operation
AL.42 S2 Temp Low The measurement temperature
of Sensor2 is too low.
Normal operation
AL.43 S2 Temp High The measurement temperature
of Sensor2 is too high.
Normal operation
AL.44 Amb Temp Low The ambient temperature is
below -40°C.
Normal operation Increase the ambient
temperature using
a heater, or use the
transmitter in a place
where the ambient
temperature is high.
AL.45 Amb Temp High The ambient temperature is
above 85°C.
Normal operation Place the transmitter
away from the heat
source.
AL.50 LRV Too Low The LRV has been set below
the temperature range of sensor
specications.
Normal operation Check and correct the
lower limit setting.
AL.51 LRV Too High The LRV has been set above
the temperature range of sensor
specications.
Normal operation
AL.52 URV Too Low The URV has been set below
the temperature range of sensor
specications.
Normal operation Check and correct the
upper limit setting.
AL.53 URV Too High The URV has been set above
the temperature range of sensor
specications.
Normal operation
AL.54 Span Too Small The span has been set below
the recommended minimum
span.
Normal operation Check and correct the
upper and lower limit
settings.
AL.60 Illegal PV Cfg The sensor (or sensor value)
mapped to PV has been set
incorrectly.
Hold to the output upon
error. 4-mA current is
output if it occurred
during startup.
Check the PV mapping.
AL.61 Reserved Reserved
AL.62 Reserved Reserved
AL.70 Output Man Mode Forced Output mode has been
selected.
The set value of Forced
Output mode
Set to the normal mode.
*1: AL04 may be generated even when abnormality or disconnection of the terminal block temperature sensor occurs.
*2: Even if abnormality or disconnection of the terminal block temperature sensor occurs, AL22 may not be output and AL04 may
be generated.

<4. Self-Diagnostics>
4-4
IM 01C50T03-02EN
The sensor burnout conditions depend on the setting of current output mapping, and the alarm occurred.
These conditions are as follows.
Table 4.2 Output Operations
Current
output
mapping
S1 Failure S2 Failure S1 Short S2 Short Term Sensor Fail
SENS.1 Sensor burnout Normal operation Sensor burnout Normal operation
S.1-TER Sensor burnout Normal operation Sensor burnout Normal operation
TERM Normal operation Normal operation Normal operation Normal operation
SENS.2 Normal operation Sensor burnout Normal operation Sensor burnout
S.2-TER Normal operation Sensor burnout Normal operation Sensor burnout
S.1-S.2 Sensor burnout Sensor burnout Sensor burnout Sensor burnout
S.2-S.1 Sensor burnout Sensor burnout Sensor burnout Sensor burnout
AVG Sensor burnout Sensor burnout Sensor burnout Sensor burnout
BACKUP *1 *1 *1 *1
*1: If both Sensor1 and Sensor2 have failed, a Sensor Burnout is output.
*2: Fixed output value just before the alarm occurred.
NOTE
While the Sensor Backup function is active, if both
AL.23 Backup S1 Fail and AL.24 Backup S2 Fail
occur, sensor burnout will occur. For details about
sensor backup refer to Section 3.2.14 "Sensor
Backup Function".
IMPORTANT
If S1 Failure, S2 Failure, S1 Short, S2 Short, Term
Sensor Fail, Backup S1 Fail, and Backup S2 Fail
are masked, the sensor burnout due to these
events is also suppressed.
If it is necessary for the sensor burnout event to
occur, release the alarm mask (NOMASK setting).
4.2 History Functions
The YTA710 temperature transmitter has the
following history functions.
(1) Alarm history
(1) Number of history records
Up to 59 history records are stored in the
temperature transmitter memory, and any ve
of them can be referred to simultaneously.
If more than 59 records are stored, history
records will be deleted in order starting from the
oldest and overwritten by new history records.
(2) History data bu󰀨er
The same 59 history records are held in the
bu󰀨er that is constantly updated and in the
parameter display bu󰀨er of the temperature
transmitter.
Before displaying the parameters, synchronize
the parameter display bu󰀨er with the bu󰀨er that
is constantly updated. Then, update them to the
latest information.
Execute the following parameters to
synchronize the data.
Parameter Option Remarks
P18:AL LOG
UPD
NO
EXEC
Nothing occurs even if this
value is written. In normal
circumstances, this value is
displayed.
EXEC When this value is written,
the bu󰀨ers are synchronized
explicitly.
When synchronization has
nished, the system returns
to the NO EXEC state
automatically.
Output Hold*2
Output Hold*2
Output Hold*2
Output Hold*2
Output Hold*2
Output Hold*2
Output Hold*2
Output Hold*2
Output Hold*2

<4. Self-Diagnostics>
4-7
IM 01C50T03-02EN
4.3 Self Check Function
The YTA has the following self-check functions.
(1) Hardware failure
This function detects a failure of CPU, AD converter,
memory and others.
(2) Sensor failure
This function detects an open circuit of sensors.
The transmitter ows the current, and outputs an
open-circuit alarm if the resistance exceeds the
threshold.
Parameter setting: Not required
Alarm output: If the resistance exceeds the
threshold, an S1 Failure (AL.10) or S2 Failure
(AL.11) alarm is output.
(3) Terminal block failure
This function detects an open circuit of CJC. The
transmitter measures the CJC resistance and
noties of a terminal block failure if the resistance
exceeds the threshold.
Parameter setting: Not required
Alarm output: If the resistance exceeds the
threshold, a Term Sensor Fail (AL.22) alarm is
output.
(4) TC short-circuit (TC)
This function detects a short-circuit of the TC
sensor. The transmitter ows current, and outputs
a short-circuit alarm if the sensor resistance (S1
RP23 for L10, or S2 RP43 for L15) is below the
threshold.
Set the threshold (resistance) using the following
parameters.
Threshold setting
parameter Alarm detected Remarks
L20:S1TC SHRT
TH
S1 Short (AL.12)
L22:S2TC SHRT
TH
S2 Short (AL.13) 2-input model
only
NOTE
In order to output the S1 (or S2) Short alarm,
"K12:S1 SHRT MASK" and "K13:S2 SHRT
MASK" must be set to "NO MASK". (The alarm is
masked by default.)
(5) “RTD” or “ohm” short-circuit (for 3-wire/4-
wire type only)
This function detects a short-circuit of the sensor
during “RTD” or “ohm” measurement. If the sensor
resistance drops below the threshold (L11: S1 RC1
to L14: S1 RC4, L17: S2RC4, L16: S2RC4), a
short-circuit alarm is output.
The threshold is xed to 5 Ω, and parameter setting
is not required.
Threshold setting
parameter Alarm detected Remarks
Not applicable S1 Short (AL.12)
Not applicable S2 Short (AL.13) 2-input model
only
NOTE
• The alarm mask must be released in order to
output the S1 (or S2) Short alarm. (The alarm
is masked by default.)
• In the case of 3-wire RTD or ohm connection,
if actual connection and connection setting
are imbalanced, an unforeseen alarm may be
generated.
(6) RTD Corrosion (for 3-wire/4-wire type only)
This function detects any corrosion between
terminal block and measurement cables. If the
resistance between the terminal block and cables
(L11:S1 RC1 to L14:S1 RC4, L17:S2 RC3, L16:S2
RC4) exceeds the threshold, a corrosion alarm is
output.
Set the threshold using the following parameters.
Threshold setting
parameter Alarm detected Remarks
L21:S1RTD COR
TH
S1 Corrosion
(AL.14)
L23:S2RTD COR
TH
S2 Corrosion
(AL.15)
2-input model
only
NOTE
The alarm mask must be released in order to
output the S1 (or S2) Corrosion alarm. (The alarm
is masked by default.)
NOTE
Even if abnormality or disconnection of the
terminal block temperature sensor occurs, AL22
may not be output and AL04 may be generated.