Autonics krn100 series - Page 65

8 Parameter detail setup
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(4) Square
In case of voltage, current input type, this mode is used when input value is calculated by
square for the desired display value. Reverse of Root, flux signal is calculated by square for
differential pressure signal.
In case lower limit range: -5V, upper limit range: +5V and
in case lower limit scale: -1000, upper limit scale: 1000,
if current input value is 2V, display value is -20.
Display value = 
Input value Lower limit input value
Upper limit input value Lower limit input value


×
(
Upper limit scale Lower limit scale
)
+ Lower limit scale
20 = 
7
10


× 2000 1000
(5) Two Unit
For compound pressure, if input pressure is lower than atmospheric pressure(0), it displays
the degree of a vacuum with mmHg unit. If input pressure is higher than or same as
atmospheric pressure(0), it displays positive pressure with kg/cm
2
unit.
When using Two Unit function, lower limit value is fixed as -760mmHg and kg/cm
2
value is
able to set within setting range 1 to 35.
Two Unit limits scale point as 0 ↔ 0.0 ↔ 0.00. When using Two Unit, display unit is
automatically changed as mmHg or kg/cm
2
.
The calculation with Record Method (Data storage method) and Filter type (Input digital
filter) is impossible and ignored due to different type of two unit value.
 Setting range: 1 to 35
 Factory default: -
If pressure range is -760mmHg to 3kg/cm
2
, and pressure transmitter outputs 4-20mA, for 4mA
input it displays -760 mmHg, 8mA input is unit changing point. For 20mA input, it displays
3kg/cm
2
.
Range
Unit changing
point (mA)
-760mmHg to 1kg/cm
2
12.130
-760mmHg to 5kg/cm
2
6.740
-760mmHg to 10kg/cm
2
5.498
-760mmHg to 15kg/cm
2
5.031
-760mmHg to 20kg/cm
2
4.786
-760mmHg to 25kg/cm
2
4.635
-760mmHg to 30kg/cm
2
4.533
-760mmHg to 35kg/cm
2
4.459