Vigilantplant TDLS8000, Руководство пользователя

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<6. Configuration>
6-2
IM 11Y01D01-01EN
“Field Communication” is Modbus input. For details on the Modbus function, see “11.
Modbus”.
• Backup mode: When “Active input” is selected, set the pressure value to use for the
concentration calculation when an input value from the sensor is out of range.
With “Disable,” backup is disabled and the input is used as is for the pressure value.
With “Backup value,” the value set in “Backup set value” is used for the pressure
value.
With “Hold,” the intermediate value of the input values of five cycles that were within
the range immediately before an input value from the sensor became out of range
is used for the pressure value. The following figure shows the example of when the
analog input falls below the lower limit of 4 mA.
A ● in the figure indicates the point of acquisition of an AI input value, and a value is
acquired every analysis cycle. The second ● of the five cycles immediately before
falling below the lower limit is the intermediate value of the current values so the
pressure value of this time is held. If the analog input immediately after turning on
the power of the TDLS8000 is out of range while “Hold” is selected, a pressure value
corresponding to 4 mA is held.
[mA ]
[s]
4.0
AI input current
Time
Analysis cycle
Intermediate value
• Backup set value: Backup pressure value when “Backup mode” is “Backup value”
(3) Configure the analog input range setting only when “AI-1” is selected in “Active type.”
Enter the pressure value corresponding to each of 4 mA and 20 mA.
Setup menu path:
[HART] “Detailed setup>>I/O condition>>Analog input>>AI-1(Pressure)”
[YH8000] “Configuration>>I/O>>Analog Input>>AI-1 (Pressure)”
6.1.3 Process Temperature
Set the process temperature of the process to be measured. When you select the input source,
set the action for error input as described in the procedure below.
Setup menu path:
[HART] “Detailed setup>>Analysis>>Process param>>Temperature”
[YH8000] “Configuration>>Analysis>>Process Parameters>>Temperature”
(1) Select “Mode” (temperature input mode).
When “Fixed” is selected, set the temperature value as an arbitrary fixed value.
When “Active input” is selected, input the temperature value via a 4-20 mA analog input (AI-
2) or Modbus. The TDLS8000 acquires a temperature value sent from the input source at
every measurement value analysis cycle and uses it for the concentration calculation.
3rd Edition: Jun. 10, 2016-00