5-236 G30 Generator Protection System GE Multilin5.8 INPUTS AND OUTPUTS 5 SETTINGS5These settings specify how the direct input information is processed. The DIRECT INPUT 1 NAME setting allows the user toassign a descriptive name to the direct input. The DIRECT INPUT 1 DEVICE ID represents the source of direct input 1. Thespecified direct input is driven by the device identified here.The DIRECT INPUT 1 BIT NUMBER is the bit number to extract the state for direct input 1. Direct Input 1 is driven by the bitidentified as DIRECT INPUT 1 BIT NUMBER. This corresponds to the direct output number of the sending device.The DIRECT INPUT 1 DEFAULT STATE represents the state of the direct input when the associated direct device is offline. Thefollowing choices are available:• Setting DIRECT INPUT 1 DEFAULT STATE to “On” value defaults the input to Logic 1.• Setting DIRECT INPUT 1 DEFAULT STATE to “Off” value defaults the input to Logic 0.• Setting DIRECT INPUT 1 DEFAULT STATE to “Latest/On” freezes the input in case of lost communications. If the lateststate is not known, such as after relay power-up but before the first communication exchange, the input will default toLogic 1. When communication resumes, the input becomes fully operational.• Setting DIRECT INPUT 1 DEFAULT STATE to “Latest/Off” freezes the input in case of lost communications. If the lateststate is not known, such as after relay power-up but before the first communication exchange, the input will default toLogic 0. When communication resumes, the input becomes fully operational.b) DIRECT OUTPUTSPATH: SETTINGS INPUTS/OUTPUTS DIRECT OUTPUTS DIRECT OUTPUT 1(32)The DIRECT OUT 1 NAME setting allows the user to assign a descriptive name to the direct output. The DIR OUT 1 OPERAND isthe FlexLogic operand that determines the state of this direct output.c) APPLICATION EXAMPLESThe examples introduced in the earlier Direct inputs and outputs section (part of the Product Setup section) are continuedbelow to illustrate usage of the direct inputs and outputs.EXAMPLE 1: EXTENDING INPUT/OUTPUT CAPABILITIES OF A G30 RELAYConsider an application that requires additional quantities of contact inputs or output contacts or lines of programmablelogic that exceed the capabilities of a single UR-series chassis. The problem is solved by adding an extra UR-series IED,such as the C30, to satisfy the additional inputs/outputs and programmable logic requirements. The two IEDs are con-nected via single-channel digital communication cards as shown below.Figure 5–116: INPUT AND OUTPUT EXTENSION VIA DIRECT INPUTS AND OUTPUTSAssume contact input 1 from UR IED 2 is to be used by UR IED 1. The following settings should be applied (Direct Input 5and bit number 12 are used, as an example): DIRECT OUTPUT 1DIRECT OUT 1 NAME:Dir Out 1Range: up to 12 alphanumeric charactersMESSAGE DIRECT OUT 1 OPERAND:OffRange: FlexLogic operandMESSAGE DIRECT OUTPUT 1EVENTS: DisabledRange: Enabled, DisabledUR IED 1: DIRECT INPUT 5 DEVICE ID = “2”DIRECT INPUT 5 BIT NUMBER = “12”UR IED 2: DIRECT OUT 12 OPERAND = “Cont Ip 1 On”UR IED 1TX1RX1UR IED 2TX1RX1842711A1 CDR
