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GE Multilin C60 Breaker Protection System 5-159

5 SETTINGS 5.5 FLEXLOGIC

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

[97] OR(3)

[98] TIMER 2

[99] = Virt Op 4

It is now possible to check that the selection of parameters will produce the required logic by converting the set of parame-

ters into a logic diagram. The result of this process is shown below, which is compared to the logic for virtual output 4 dia-

gram as a check.

GE C60 User Manual

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