ABB CL Series Applications Manual page 108

1SVC 440 795 M0100
A8 EQ
I1 I8
F1 0010
I2 3000
F2 +0
OS +0
HY 0250
A8-------ÄQ3
1
2
3
4
on
off
Figure 49: Signal diagram of analog value comparator in Less than/
equal to mode
1: actual value at I7
2: setpoint plus hysteresis value
3: setpoint
4: setpoint minus hysteresis
The n/o contact switches off when the actual value at I7
exceeds the setpoint plus hysteresis. If the actual value at I7
equals or falls below the setpoint, the n/o contact switches on.
Function of the Equal to comparison
Parameter display and parameter set for Equal to analog
+
value comparator.
Æ
æ
Circuit diagram with analog value comparator.
h The values
values are used with a gain factor, and no offset is used.
A gain factor of 10 is used with the analog value at I8. The
hysteresis is adjusted accordingly.
Analog value comparator/
threshold value switch
F2 +0 OS +0
and were not defined. No
105