Siemens 7SR10 Argus Series, Manual

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7SR10 Description of Operation
©2018 Siemens Protection Devices Limited Chapter 1 Page 58 of 77
4.2 Quick Logic
The ‘Quick Logic’ feature allows the user to input up to 4 logic equations (E1 to E4) in text format. Equations can
be entered using Reydisp or at the relay fascia.
Each logic equation is built up from text representing the control characters. Each can be up to 20 characters
long. The allowable characters are:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Digit
( ) Parenthesis
! ‘NOT’ Function
. ‘AND’ Function
^ ‘EXCLUSIVE OR’ Function
+ ‘OR’ Function
E n Equation (number)
I n
Binary Input (number)
‘1’ = Input energised, ‘0’ = Input de-energised
L n
LED (number)
‘1’ = LED energised, ‘0’ = LED de-energised
O n Binary output (number)
‘1’ = Output energised, ‘0’ = Output de-energised
V n Virtual Input/Output (number)
‘1’ = Virtual I/O energised, ‘0’ = Virtual I/O de-energised
Example Showing Use of Nomenclature
E1= ((I1^F1).!O2)+L1
Equation 1 = ((Binary Input 1 XOR Function Key 1) AND NOT Binary Output 2) OR LED 1
When the equation is satisfied (=1) it is routed through a pick-up timer (
En Pickup Delay ), a drop-off timer ( En
Dropoff Delay
), and a counter which instantaneously picks up and increments towards its target (
En Counter
Target ).
P.
U.
DELAY
D.O
. DELAY
T
Counter Value 1 2
Increment
Counter
Equation Output 1 0 1 0 1
For Counter Target = 2
E n = 1
Equation n P.U. DELAY D.O. DELAY Counter E n = 1
Counter
= Target Value
Figure 4-3 Sequence Diagram: Quick Logic PU/DO Timers (Counter Reset Mode Off)
When the count value = En Counter Target the output of the counter (En) = 1 and this value is held until the
initiating conditions are removed when En is instantaneously reset.
The output of En is assigned in the OUTPUT CONFIG > OUTPUT MATRIX menu where it can be programmed to
any Binary Output (O), LED (L) or Virtual Input/Output (V) combination.
Protection functions can be used in Quick Logic by mapping them to a Virtual Input/Output.