<3. Parameter Setting>
3-3
IM 01C50T03-02EN
3.2 Parameter Description
The following outlines the setting items for YTA
BRAIN protocol. Before starting operations, review
the entire configuration of the transmitter to confirm
that it meets the requirements of the current
application.
•
Checking Sensor Connection (→3.2.1)
Confirm that the sensor is correctly connected.
•
Sensor Configuration (→3.2.2)
Set the “sensor type” and “number of wire
connections” of the sensor connected to the input
terminal of the temperature transmitter. (Set the
“sensor type” and “number of wire connections” of
Sensor1 or Sensor2.)
•
Process variable mapping (→3.2.3)
Process variable is to be assigned as primary (PV),
secondary (SV), tertiary (TV) and quaternary (QV)
Variables. They can be monitored on the integral
indicator or by using the configuration tool. The
process variable mapped to the PV is handled as
the 4 to 20 mA DC output.
•
Unit (→3.2.4)
An engineering unit of “degC” or “K” (Kelvin) can be
chosen for process variables. When voltage value
or resistance is specified as an input type, the unit is
automatically set as mV or ohms.
•
PV Range (→3.2.5)
Change the range of PV [primary variable] to be
output as the 4 to 20 mA DC.
There are two ways to set the range value: Setting
by keyboard, and setting by applying a value.
•
Damping (→3.2.6)
Adjust the response time to smooth the output with
rapid changes in input.
The damping time constant of the process variable
can be set from 1 to 100 seconds.
•
Device Information (Tag number, writing
in note) (→3.2.7)
Not only a tag number but also an optional memo
can be set for each instrument.
•
Test Output (→3.2.8)
This function can output any value as DC output.
Use it for loop check. An output of any value
between 3.6 mA and 21.6 mA can be set.
•
Burnout Function (→3.2.9)
Configure the current output value of 4 to 20 mA
DC if the input sensor circuit is opened or if the
hardware has failed.
•
Integral Indicator Display Mode
(→3.2.10)
Allow to select items to be displayed on the LCD
panel if the integral indicator is mounted.
•
Write Protect (→3.2.11)
Enable or disable parameter writing.
•
Sensor trim (→3.2.12)
Correct the factory default characteristics to match
the input signal.
•
Analog Output trim (→3.2.13)
Fine tune the 4 to 20 mA DC output.
•
Sensor Backup Function (→3.2.14)
When the Backup mode is selected, Sensor2
operates as a backup sensor of Sensor1. If the
Sensor1 circuit is opened or if a problem occurs in
this circuit, the signal output is switched to Sensor2
output automatically.
•
Sensor Matching Function (→3.2.15)
If the transmitter has the optional specifications or
CM1, the accuracy of the temperature transmitter
can be improved by changing the specific sensor
constants.
•
CJC Selection (→3.2.16)
Select whether to use the terminal block
temperature for cold contact compensation or to
use the arbitrary constant set by the user.
