Toshiba lf516 User Manual

 
 

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The procedure to use multiple range high/low limit alarm is shown below. 

 

 

 

                 
 
 
 
 
                 

・

Set the range in accordance with 8.2.9 Span (range) in the following order. 

 

1. Set the range type to “unidirectional flow, multiple ranges selected by 

external signal”. 

2. Set Range 1 and Range 2 respectively. 

 

                 
 
 
 
 
                 

・

Set digital output 1 and 2 (DO1, DO2) function to multiple range high limit 

alarm output and multiple range low limit alarm output respectively in 
accordance with 8.2.18 Digital I/O.  

 

Also set the alarm output state to either of normally open or normally close. 

 

 

・

Set digital input (DI) function to RANGE SW in accordance with 8.2.19 

Digital I/O. 

 

                 
 
 
 
 
                 

・

Set high limit alarm and low limit alarm to ON and set alarm value to high 

and low alarms respectively in accordancewith 8.2.23 Flow Rate High, Low, 
High-High and Low-Low limit Alarm Setting. 

 
    Set the alarm not to use to OFF. 

 

 

・

Set high-high alarm and low-low alarm to ON and set alarm value to them 
respectively in accordance with 8.2.23 Flow Rate High, Low, High-High 
and Low-Low limit Alarm Setting.  

 
Set the alarm not to use to OFF. 
 
(Note 1) When setting DO using HHT AF900 (Ver2.40 or older), set alarm outputs 

as below: 

Multiple range high limit alarm output   

SPECIAL-B, 

Multiple range low limit alarm output   

SPECIAL-A