<3. Parameter Setting>
3-9
IM 01C50T03-02EN
(1) Setting the damping time constant
The temperature transmitter calculates 63% of the
input range to be output after the time period set by
the damping time constant has elapsed.
The damping time constant can be set between 0
and 100 seconds (an integer). If set to 0 seconds,
damping is skipped.
Output
0
63%
100%
T
D
t
T
D
: Damping time constant
F0305.ai
Figure 3.3
Output response if a step change
(100%) occurs at time 0
(2) Damping calculation threshold
The temperature transmitter does not perform
damping if the variation amount is larger than
the damping calculation threshold. However, this
function is only effective for damping of analog
output.
The damping calculation threshold is set by the
percentage (%) that is relative to the output range
(the output change rate per calculation cycle).
This threshold can be set between 0 and 99% (an
integer). If set to 0%, damping is skipped.
The output if the range is set to 0 to 100°C and if the
damping calculation threshold is set to 10%
Range: 0 to 100%
Input
Output
Time
9%
(°C)
10
0
(%)
10
0
Input
Output
Time
(°C)
10
0
(%)
10
0
14%
F0306.ai
If input variation amount
is below the preset value
If input variation amount
is above the preset value
Variation
amount
Variation
amount
Figure 3.4
Example of damping operation
3.2.7 Device information (tag number, and
memory writing)
Parameter
Format
Remarks
C01:TAG NO. Up to 16
characters
If the tag number is
specified at the time of
ordering, it is set prior
to factory shipment.
O10:MEMO1 Up to 16
characters
If you need to
write more than 16
characters, set the
excess characters in
MEMO2 and MEMO3
fields.
O20:MEMO2 Up to 16
characters
O30:MEMO3 Up to 16
characters
O40:DATE
“yyyy/mm/dd”
format
It is only the date
recording function.
There is no built-in
clock function, and the
date is not updated.
3.2.8 Test Output
The constant current of 3.6 mA (2.5%) to 21.6
mA (110%) can be output from the temperature
transmitter.
This function is useful for performing the loop
check.
The following shows the setting parameters related
to the test output.
Parameter
Settings
Remarks
F10:
OUTPUT MODE
Switches
between Test
Output and
Normal Output.
NORMAL MODE:
Normal Output
MANUAL MODE:
Test Output
F20:
OUTPUT mA
Specify the Test
Output value in
mA.
Also reflected in
F21
F21:
OUTPUT %
Specify the Test
Output value in
percentage.
Also reflected in
F20
F30:
RELEASE TIME
Set the release
time of Test
Output.
10 MINUTES
30 MINUTES
60 MINUTES
3 HOURS
6 HOURS
12 HOURS
*
Either F20 or F21 can be set, and they are reflected
mutually.
