User manual

Analog value comparator/threshold value
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Table 9: Comparison examples:
Circuit diagram display with analog value comparator
Analog value comparators are integrated as contacts in the
circuit diagram.
In the circuit diagram above, I1 enables both analog value
comparators. If a value goes below the set value, A1 switches
output Q1. If another value exceeds the set value, A2
deactivates output Q1. A3 switches marker M1 on and off.
Table 10: Parameter display and parameter set for analog value
comparator:
A1 function relay
Value input I1
A1 function relay
Value input I2
I7 GE
(greater than/equal
to)
I8
I7 LE
(less than/equal to)
I8
I7 GE
(greater than/equal
to)
Setpoint
I7 LE
(less than/equal to)
Setpoint
I8 GE
(greater than/equal
to)
Setpoint
I8 LE
(less than/equal to)
Setpoint
I1uA1----SQ1
hA2----RQ1
A3-------ÄM1
A1 EQ +
I1 +0 Æ
F1 +0
I2 +0 æ
F2 +0
OS +0
HY +0
A1 Analog value comparator function relay 1
EQ Equal mode
The function relay has the following modes:
•
LT: less than
•
LE: less than/equal to
• EQ: equal to
•
GE: great than/equal to
•
GT:greater than
+ + appears in the PARAMETER menu.
- does not appear in the PARAMETER menu.
EZ500_700.book Page 103 Tuesday, May 3, 2005 5:15 PM