YOKOGAWA EXA TB TB400G, Руководство пользователя

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<5. FUNCTIONS>
5-5
IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
5.2.2 Other Functions Related to Output
Table 5.3 shows other functions related to analog output and the operation modes and function
numbers for setting.
Table 5.3 Other Functions Related to Output
Detected item Details Mode FUNCTION
1 Bi-linear output Setting of break points when an analog signal is output
with line-segment approximation.
PROGRAM 1 6
2 Output hold during
maintenance
When maintained (other than the <MEAS.> mode), the
function to hold the analog output.
PROGRAM 1 4.
3 Output mode when
a failure is detected
Analog output mode (non-hold, hold, or preset)
selection when the "FAIL" lamp is lit.
PROGRAM 1 5.
4 Holding an output of
4 mA or less
If a turbidity value becomes smaller than the output
range lower limit, the output is held at 4 mA (1 V).
PROGRAM 1 6.
5 Setting of output
value if a failure is
detected.
If "preset" is selected in function 3), the value set here
is output.
PROGRAM 1 5
(1) Bi-linear Output
The point where a setpoint (%) of the output range span (mg/L) corresponds to 59% of the output
signal (4 to 20 mA or 1 to 5 V) span is the break point. The setting range is 0 to 100%. Figure 5.2
shows an example of a setting.
F0502.ai
0 1 4 5 3 2
12
20
4
Break point
mA
Output range (mg/L, (deg.))
40 % setting
Example of setting
Output range: 0 to 5 mg/L (deg.)
Output: 4 to 20 mA
Break point setting: 40 % (2 mg/L (deg.))
Output
signal
Figure 5.2 Example of Bi-linear Output
If the output range setpoint is determined to be 50%, the output is linear. Also, if set at 0% or
100%, the output is as shown in Figure 5.3 respectively.
F0503.ai
12
20
4
mA
Output range (mg/L, (deg.))
Lower
limit
Upper
limit
12
20
4
mA
Output range (mg/L, (deg.))
Lower
limit
Upper
limit
In the case of setting 0 %
In the case of setting 100 %
Output
signal
Output
signal
Figure 5.3 Output When the Break Point Is Set at 0% and 100% of the Output Range