Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 14)

3. OPERATION
IM 01C50T01-01E 3-1
3. OPERATION
IMPORTANT
Do not turn off the power to the transmitter
immediately after transfer of the data from HART
Communicator. If the transmitter is turned off in
less than 30 seconds after parameters has been
set, the setting data will not be stored and the
transmitter will return to the previous settings.
NOTE
Parameters and functions in regards to Sensor2
are offered only for Model YTA320, and not
available with YTA110/YTA310.
3.1 Parameter Description
The followings outline the functions of the HART
parameters for YTA. Table 3.1 shows the name, usage
and selection of each parameter.
• Review Configuration Data (
→
3.3)
• Sensor Configuration (
→
3.4.1)
When changing the sensor type from the current
setting to another, it is necessary to change some
parameter settings.
• Process variable mapping (
→
3.4.2)
Process variable is to be assigned as primary(PV),
secondary(SV), tertiary(TV) and fourth(4V) Variable
and can be monitored on the Integral indicator or
Handheld terminal. Primary variable(PV) is output as
the 4 to 20mA analog signal.
• Unit Setting (
→
3.4.3)
Choose the engineering unit for the process variables
assigned as PV,SV, TV and 4V from
°
C, Kelvin,
°
F
and
°
R . When mV or ohm is specified as an input
type, the unit is automatically set as mV or ohm.
• Range setting (
→
3.4.4 )
Changing the range of PV to be output as the 4 to
20mA DC. There’s two ways to set the range value.
<a> Setting by keypad
<b> Setting by applying value
• Damping time constant (
→
3.4.5)
Setting the response time of the transmitter smooths
the output with rapid changes in input.
• Tag No., Message, Descriptor (
→
3.4.6 ,
3.5.1)
Setting data in Tag, Message, and Descriptor
parameters.
• Test Output (
→
3.5.2)
Make the transmitter output a fixed current from -2.5
through 110 % in 0.1% increments for loop checks.
• Sensor Burnout (
→
3.5.3)
Configure the current output value in sensor failure.
Selectable from High, Low and User setting value.
• Integral Indicator Display Mode (
→
3.5.4)
To change items to be displayed on the Integral
Indicator.
• Write Protection (
→
3.5.5)
To enable / disable write protection of parameters.
• Sensor Backup Function (
→
3.5.8)
To configure a transmitter to automatically transfer
the input from Sensor1 to Sensor2 when Sensor1
fails.
• Burst Mode (
→
3.5.9)
In the burst mode, a transmitter continuously sends a
selected set of data.
• Sensor trim (
→
3.5.6)
The trim adjustment function allows the user to add a
compensation to the factory set characterization
curve to more closely match the input signal.
• Output trim (
→
3.5.7)
Adjust the output value. See “IM01C50B01-01E 6.
Calibration” also.