13-3
〔
Example: Chart speed selection by an alarm output
〕
Set another alarm to a value which is more or less lower than the necessary alarm point, and switch the chart speed
by its output. Thus, detail records of measuring data before and after the necessary alarm point can be obtained.
Measuring data
Chart speed
Lower than 800
℃
5mm/H
800 to 1200
℃
50mm/H
Higher than 1200
℃
Stop
[Connection example]
An example of the selection of chart speeds by an alarm output
Description of operation in the above example
①
The chart speed is 5mm/H when no alarm occurs.
②
If a measured value becomes higher than 800
℃
, alarm output 1 turns on and the chart speed is switched to
50mm/H.
③
If a measured value becomes higher than 1200
℃
, alarm output 2 turns on and the recording stops.
Alarm setting
Necessary alarm point
:
Higher-limit 1000
℃
(
alarm output 3
)
Chart speed switching alarm contact
:
Higher-limit 800
℃
(
alarm output 1
)
Chart stop alarm point
:
Higher-limit 1200
℃
(
alarm output 2
)
Chart speed setting
Chart speed 1
:
5mm/H
Chart speed 2
:
50mm/H