Multiple range high/low limit alarm output, Toshiba, 6, f, зао, 8,6,9 – Toshiba LF600F User Manual
Page 135
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TOSHIBA
; 6, F, ЗАО, 8,6,9,
Multiple range high/low limit alarm output
Flow rate
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:
Large range (Range 1):
1000 m^/h
Small range (Range 2):
500 m^/h
And you want to set alarm values as below:
Large range alarm set values
High limit value:
800 m^/h
Low limit value:
600 m^/h
Small range alarm set values
High-high limit value: 400 m^/h
Low-low limit value: 300 m^/h
Set the alarm set values as below:
High limit value:
Low limit value:
80 % (800 m^/h
-1000
m^/h=
0
.
8
)
60 % (600 m^/h
4-1000
m^/h=
0
.
6
)
High-high limit value: 40 % (400 m^/h-blQOQ m^/h=0.4)
Low-low limit value: 30 % (300 m^/h-blQOQ m^/h=0.3)
See Note4.
See Note4
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