Figure 51: Key To Logic Diagrams - GE P4A Technical Manual

P54A/B/C/E
Key:
Energising Quantity
Internal Signal
DDB Signal
Internal function
Setting cell
Setting value
Hardcoded setting
Measurement Cell
Internal Calculation
Derived setting
HMI key
Connection / Node
Switch
Switch
Bandpass filter
V00063

Figure 51: Key to logic diagrams

P54xMED-TM-EN-1
AND gate
OR gate
XOR gate
NOT gate
Logic 0
Timer
Pulse / Latch
SR Latch
SR Latch
Reset Dominant
Latched on positive edge
Inverted logic input
Soft switch
Multiplier
Comparator for detecting
undervalues
Comparator for detecting
overvalues
Chapter 7 - Autoreclose
&
1
XOR
0
S
Q
R
S
Q
R
D
1
2
X
133