UL Addendum - Tyco Security Products

3 RD PARTY LEGACY INPUT SUPERVISION SUPPORTC•CURE 800 version 9.3 and iSTAR eX firmware 4.3.provide support for MDI type SupervisedInput Configurations. This option allows C•CURE systems to reuse previously wired legacyinputs.Definitions, Acronyms, and AbbreviationsNormally Open Input – an input with a contact closure switch that is in the open position whenin the Secure state, and in the closed position in the Alarm state.Normally Closed Input – an input with a contact closure switch that is in the closed positionwhen in the Secure state, and in the open position in the Alarm state.Supervising Resistor – a resistor in the circuit of an input that provides known expected valueswhen in the Secure and Alarm states.Single End-Of-Line input – a supervised input that uses a single supervising resistor either inseries or parallel with the contact closure switch.Dual End-Of-Line input – a supervised input that uses two supervising resistors, typically withone resistor in parallel with the sense switch, and the other resistor in series with the first resistorand switch. Alternatively, one resistor may be series with the switch only, and resistor in parallelwith series resistor and switch.NO – Normally OpenNC – Normally ClosedEOL – End-Of-LineSupport for MDI Type Supervised Input ConfigurationsThe Software House iSTAR controllers are able to support legacy supervised inputconfigurations using 1K and 2K resistors, similar to those used by MDI.The iSTAR controllers can be retrofitted to installations with supervised inputs which had beenpreviously wired for legacy systems.The two types of inputs which are supported are 1K ohm Single End-Of-Line (Single EOL)configurations, and 1K / 2K ohm Double End-Of-Line (Double EOL) configurations.The 1K Single inputs can be wired to any input on an iSTAR Pro or eX.The 1K / 2K Double inputs must be connected to an I/8 board, which is connected to an RM buson any iSTAR.34 C·CURE 800/8000 V9.4 UL Addendum