ABB CL Series Applications Manual page 109

Wiring with the logic relay
A5 GE
I1
F1
I2
F2
OS
HY
A5-------ÄQ1
106
1
2
3
4
on
off
Figure 50: Signal diagram of analog value comparator in Equal to
1: actual value at I8, multiplied with gain factor F2
2: setpoint plus hysteresis value
3: setpoint
4: setpoint minus hysteresis
The n/o contact switches on if the actual value at I8
(multiplied by F1) reaches the configured setpoint. If the
actual value exceeds the setpoint, the n/o contact switches
off. The n/o contact switches on if the actual value at I8
(multiplied by F1) reaches the configured setpoint. If the
actual value falls below the setpoint minus hysteresis, the
n/o contact switches off.
Example: Function of the Greater than/equal to
comparison
Parameter display and parameter set for Greater than/equal
+
analog value comparator.
I7 Æ
+0
0100 æ
+0
+0
0025
Circuit diagram with analog value comparator.
mode
1SVC 440 795 M0100