CHAPTER 5: SETTINGS FLEXLOGICC60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL 5-1835– 95: The last step in the procedure is to specify the upper input to the AND gate, the operated state of digitalelement 2. This operand is "DIG ELEM 2 OP".Writing the parameters in numerical order forms the equation for virtual output 3:[95] DIG ELEM 2 OP[96] Cont Ip H1c On[97] NOT[98] AND(2)[99] = Virt Op 3It is now possible to check that this selection of parameters produces the required logic by converting the set ofparameters into a logic diagram. The result of this process is shown in the figure, which is compared to the logic forvirtual output 3 diagram as a check.Figure 5-93: FlexLogic equation for virtual output 36. Repeating the process described for virtual output 3, select the FlexLogic parameters for Virtual Output 4.– 99: The final output of the equation is virtual output 4, which is parameter “= Virt Op 4".– 98: The operator preceding the output is timer 2, which is operand “TIMER 2". Note that the settings required forthe timer are established in the timer programming section.– 97: The operator preceding timer 2 is OR #2, a 3-input OR, which is parameter “OR(3)”.– 96: The lowest input to OR #2 is operand “Cont Ip H1c On”.– 95: The center input to OR #2 is operand “TIMER 1".– 94: The input to timer 1 is operand “Virt Op 3 On".– 93: The upper input to OR #2 is operand “LATCH (S,R)”.– 92: There are two inputs to a latch, and the input immediately preceding the latch reset is OR #1, a 4-input OR,which is parameter “OR(4)”.– 91: The lowest input to OR #1 is operand “Virt Op 3 On".– 90: The input just above the lowest input to OR #1 is operand “XOR(2)”.– 89: The lower input to the XOR is operand “DIG ELEM 1 PKP”.– 88: The upper input to the XOR is operand “Virt Ip 1 On".– 87: The input just below the upper input to OR #1 is operand “Virt Op 2 On".– 86: The upper input to OR #1 is operand “Virt Op 1 On".– 85: The last parameter is used to set the latch, and is operand “Virt Op 4 On".The equation for virtual output 4 is:[85] Virt Op 4 On[86] Virt Op 1 On[87] Virt Op 2 On[88] Virt Ip 1 On[89] DIG ELEM 1 PKP[90] XOR(2)[91] Virt Op 3 On[92] OR(4)[93] LATCH (S,R)[94] Virt Op 3 On[95] TIMER 1[96] Cont Ip H1c On
