5 Function blocks
5.1 A, analog value comparator/threshold value switch
Control Relay easy800
11/11 MN04902001Z-EN
www.eaton.com
137
Operating mode
This parameter defines which comparison result is to be used to close
function block contact Q1.
The default settings of this parameter is LT.
Inputs
I1 and I2:
The signals at function block inputs I1 and I2 are compared.
F1 and F2:
If required adjust the comparison values and increase them by
entering gain factors F1 and F2.
•
F1 is permanently assigned to I1.
•
F2 is permanently assigned to I2.
OS:
You can use the offset input OS to move the zero point of the function
block input I1.
HY:
The HY function block input is used for the positive and negative
switching hysteresis of the input I2.
All function block inputs can be assigned the following operands:
•
Constant.
•
Markers MD, MW, MB.
•
Analog inputs IA01 to IA04:
•
IA01: Terminal I7.
•
IA02: Terminal I8.
•
IA03: Terminal I11.
•
IA04: Terminal I12.
•
Analog output QA01.
•
Output
…
QV of a different function block
If they are not associated, the inputs have a default value of:
•
F1 and F2 = 1
•
OS and HY = 0
Parameters
Function, parameterization in the function block
GT
>I1
greater than
>I2
EQ
I1
equal to
>I2
LT
>I1
less than
>I2