YOKOGAWA YTA610 User manual

User’s
Manual
Manual Change No. 18-0031-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 01C50T02-02EN(2)
YTA610 and YTA710
Temperature Transmitters
Fieldbus Communication
6-56.3.3 Parameters of SENSOR Transducer Block
Applicable part
Add CAUTION.

<6. Explanation of Basic Items> 6-5
IM 01C50T02-02EN
SENSOR_CONNECTION_1 (2)
(Sensor1ProbeSetup(M)→SENSOR_
CONNECTION_1(2))
Indicates and stipulates the number of wires
connected to sensor input 1 (or 2). This setting only
valid for RTD and resistance input.
WIRING_RESISTANCE_1(2)
(Sensor1ProbeSetup(M)→WIRING_
RESISTANCE_1(2))
Wiring resistance of the 2-wire resistance input,
the input resistance minus this value is used as the
temperature value.
PRIMARY_VALUE_1 (2)
(DeviceConguration→STB→BasicSetup→
Sensor1(2)Basic→PrimaryValRange1(2))
Indicates the value and status of the input from
sensor 1(2). The unit set in PRIMARY_VALUE_
RANGE_1(2) applies to the unit of the value.
NOTE
If an input exceeds the range shown in
PRIMARY_VALUE_RANGE_1(2), the value
up to 120% of the range will be output for upper
limit side, and -20% of the range will be output
for lower limit side. In this case, the accuracy
of the input exceeding the range shall not be
guaranteed.
SENSOR1(2)_VALUE
(DeviceConguration→STB→BasicSetup→
Sensor1(2)Basic→Sensor1(2))
Indicates the value and status of the Sensor1(2).
The unit is set in SENSOR1(2)_UNIT, and the
damping time constant in SENSOR1(2)_DAMP.
TERMINAL_VALUE
(ProcessVariables→STB→SensorValue→
Sensor1(2)→Terminal)
Indicates the value and status of the terminal board
temperature. The unit of temperature is set in
TERMINAL_UNIT, and the damping time constant
in TERMINAL_DAMP.
BACKUP_VALUE
(ProcessVariables→STB→SensorValue→
Backup→Backup)
When 2 sensors are connected, this parameter
normally shows the value input from sensor 1, and
in case of sensor 1 failure (when the backup action
becomes active), shows the value input from
sensor 2. The unit and damping time constant
follow the respective settings for the input currently
selected. If you want to switch back to select
sensor 1 input while the backup action is active
after the sensor 1 input recovers, set 1 (Enable) in
SENSOR_ RECOVER. Because this data is not
retained, set 1(Enable) in the parameter every
switch back. When there is no connection to
sensor 2 input, the status of BACKUP_VALUE is
Bad and the value is undefined.
NOTE
Sensor Type: Any type available but two sensors
should be same type.
●Parameters Related to Limit Switches
Parameters whose names begin with “LIMSW”
store the settings for limit switch signals output to
DI function blocks. The SENSOR transducer block
has 4 limit switches numbered from 1 to 4, and
theseparametersdeterminethespecicationsof
the respective switches. In the following parameter
names and descriptions, read the number “1” as
“2,” “3,” or “4” according to the intended limit switch
number.
LIMSW_1_VALUE_D
(DeviceConguration→STB→DetailedSetup→
LimitSwitch→Switch1→Limsw1)
Indicates the value and status of limit switch 1.
AVERAGE_VALUE
(ProcessVariables→STB→SensorValue→Diff.
Average→Average)
Indicates the value and status of the average of 2
inputs when 2 sensors are connected. The unit
of temperature is set in AVERAGE_UNIT. When
there is no connection to sensor 2 input, the status
of AVERAGE_VALUE is Bad and the value is
undefined.
CAUTION
There is a time lag between sensor failure and
sensor abnormality detection.
Since the failed measurement value is output, the
PRIMARY_VALUE_1(2) and
SENSOR1(2)_VALUE also becomes undefined.
At that time, the status of PRIMARY_VALUE_ 1
(2) and SENSOR 1 (2) _VALUE is "Good".
Status will be "Bad" when sensor abnormality is
detected. In the AI function block, if the undefined
process value is within SCALE, the Status will be
"Good", if the SCALE is exceeded, the Status will
be "Uncertain".