Wiring with easy
104
05/04 AWB2528-1508GB
Analog value comparator/
threshold value switch
easy provides 16 analog comparators A1 to A16 for use as
required. These can also be used as threshold value switches
or comparators.
An analog value comparator or threshold value switch
enables you to compare analog input values with a setpoint,
the actual value of another function relay or another analog
input. This enables you to implement small controller tasks
such as two-point controllers very easily.
All easy-AB, easy-DA and easy-DC devices are provided with
analog inputs.
• The analog inputs of the easy500 are I7 and I8.
• The analog inputs of the easy700 are I7, I8, I11 and I12
The following comparisons are possible:
h
Compatibility with easy400 and easy600
If you have loaded an existing easy400 or easy600 circuit
diagram, the previous comparator functions and values
are retained. The analog value comparator function relay
can work in easy500 and easy700 in the same way as in
easy400, easy600. The setpoints are converted to the new
resolution of the analog inputs. The setpoint 5.0 (easy400,
easy600) is converted to the setpoint 512 (easy500,
easy700).
Value at function
relay input I1
1
Comparator functions
Value at function
relay value input
I2
Mode selection at
the function relay
Analog input I7, I8,
I11, I12
Analog input I7, I8,
I11, I12
Setpoint 0000 to
9999
Setpoint 0000 to
9999
Actual value of
counter relays C1 to
C16
Actual value of
counter relay C1 to
C16
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