5-228 N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUALINPUTS/OUTPUTS CHAPTER 5: SETTINGS5There are 64 virtual inputs that can be individually programmed to respond to input signals from the keypad (via theCOMMANDS menu) and communications protocols. All virtual input operands are defaulted to “Off” (logic 0) unless theappropriate input signal is received.If the VIRTUAL INPUT x FUNCTION is to “Disabled,” the input is forced to off (logic 0) regardless of any attempt to alter theinput. If set to “Enabled,” the input operates as shown on the logic diagram and generates output FlexLogic operands inresponse to received input signals and the applied settings.There are two types of operation: self-reset and latched. If VIRTUAL INPUT x type is “Self-Reset,” when the input signaltransits from off to on, the output operand is set to on for only one evaluation of the FlexLogic equations and then return tooff. If set to “Latched,” the virtual input sets the state of the output operand to the same state as the most recent receivedinput.The self-reset operating mode generates the output operand for a single evaluation of the FlexLogic equations. If theoperand is to be used anywhere other than internally in a FlexLogic equation, it likely needs to be lengthened in time. AFlexLogic timer with a delayed reset can perform this function.Figure 5-115: Virtual inputs logic5.9.3 Contact outputs5.9.3.1 Digital outputsSETTINGS INPUTS/OUTPUTS CONTACT OUTPUTS CONTACT OUTPUT H1Upon startup of the relay, the main processor determines from an assessment of the modules installed in the chassiswhich contact outputs are available and then present the settings for only these outputs.An ID can be assigned to each contact output. The signal that can OPERATE a contact output can be any FlexLogic operand(virtual output, element state, contact input, or virtual input). An additional FlexLogic operand can be used to SEAL-IN therelay. Any change of state of a contact output can be logged as an Event if programmed to do so. VIRTUAL INPUT 1EVENTS: DisabledRange: Disabled, Enabled CONTACT OUTPUT H1 CONTACT OUTPUT H1 IDCont Op 1Range: up to 12 alphanumeric characters OUTPUT H1 OPERATE:OffRange: FlexLogic operand OUTPUT H1 SEAL-IN:OffRange: FlexLogic operand CONTACT OUTPUT H1EVENTS: EnabledRange: Disabled, EnabledVIRTUAL INPUT 1FUNCTION:VIRTUAL INPUT 1 ID:“Virtual Input 1 to OFF = 0”“Virtual Input 1 to ON = 1”ANDANDANDORSETTINGSETTINGEnabled=1(Flexlogic Operand)Virt Ip 1827080A3.CDRSETTINGVIRTUAL INPUT 1TYPE:LatchedSelf - ResetRSLatch
