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Multiple range high/low limit alarm output
Flow rate
High limit
Low limit
High-high limit
Low-low limit
Multiple range
DO1
High limit alarm output
Multiple range
DO2
Low limit alarm output
Alarm output ON
DI range select signal
Note 1: Range changes to Small range when range select signal is H level, and to Large range in L
level.
Note 2: High-high/low-low limit alarm is activated when Small range is selected. High/low limit
alarm is not output to display.
High/low limit alarm is activated when Large range is selected. High-high/low-low
limit alarm is not output to display.
Note 3: Alarm output state is the same state to which digital output 1 or 2 is set. When converter
power is OFF, contact output is OPEN.
Note 4: Each alarm set value % is the percent set to the first range.
Note 5: Hysteresis of each alarm is 2.5 % for the first range.
Example
When Large range and Small range are set as below:
And you want to set alarm values as below:
Set the alarm set values as below:
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Alarm output ON
Small range (Range 2)
Large range (Range 1):
Small range (Range 2):
Large range alarm set values
High limit value:
Low limit value:
Small range alarm set values
High-high limit value: 400 m
Low-low limit value:
High limit value:
Low limit value:
High-high limit value: 40 % (400 m
Low-low limit value:
－ 131 －
Alarm output ON
Alarm output ON
Alarm output ON
Large range (Range 1)
3
1000 m
/h
3
500 m
/h
3
800 m
/h
3
600 m
/h
3
/h
3
/h
300 m
3
80 % (800 m
/h÷1000 m
3
60 % (600 m
/h÷1000 m
3
/h÷1000 m
3
30 % (300 m
/h÷1000 m
6 F 8 A 0 9 2 8
Time
3
/h=0.8)
3
/h=0.6)
3
/h=0.4) See Note4.
3
/h=0.3) See Note4
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Troubleshooting
