ABB CL Series Applications Manual page 113

Wiring with the logic relay
A1-------ÄM9
A1 LT
I1
F1
I2
F2
OS
HY
110
First operating state
A6 EQ
I1
F1
I2
F2
OS
HY
Second operating state
A7 EQ
I1
F1
I2
F2
OS
HY
Example: Analog value comparator, comparison of
two analog values
To compare two analog values, you can use the following
circuit. In this case, the comparison determines whether I7 is
less than I8.
Parameter settings of the analog value comparator.
+
I7 Æ
+0
I8 æ
+0
+0
0025
+
I7 Æ
+0
0500 æ
+0
+0
0025
Third operating state
+ A8 EQ
I7 Æ I1
+0 F1
0700 æ I2
+0 F2
+0 OS
0025 HY
1SVC 440 795 M0100
+
I7 Æ
+0
0850 æ
+0
+0
0025