Analog value comparator/
threshold value switch
105
1SVC 440 795 M0100
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.
Circuit diagram with analog value comparator.
on
off
1
2
3
4
A8 EQ +
I1 I8 Æ
F1 0010
I2 3000 æ
F2 +0
OS +0
HY 0250
A8-------ÄQ3
h
The values F2 +0 and OS +0 were not defined. No
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.
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