Wiring Overview - Simplex 4100ES Installation Manual

22.7.2 EPS Class B IDNAC Wiring

22.7.2.1 Wiring Overview

The EPS has three SLCs for power and communication wiring.
Each ES-PS IDNAC card SLC powers and communicates with up to 127 IDNAC devices. The ES-PS IDNAC is wired to compatible devices and
appliances, such as the TrueAlert ES and TrueAlert Addressable lines (both multi and fixed candela), using Class B circuitry.
Class B wiring allows "T" tapping. ES-PS wiring is inherently supervised due to individual device level communications. End-of-line resistors
are not required.
22.7.2.2 IDNAC Wiring Guidelines
Review the following guidelines for IDNACs before you begin the field wiring.
• Only IDNAC and other compatible devices are allowed on the SLCs.
• Maximum of 127 devices or 139 unit loads per channel. The maximum number of visuals that can be synchronized on one circuit is
127.
• Maximum of six isolators between any appliance and SLC terminals. Maximum 12 isolators per SLC.
• Maximum 30 devices connected directly to any isolator terminal pair.
• The required wire is UTP (Unshielded Twisted Pair). This wiring must have a capacitive rating of less than 60 pF/ft and a minimum 3
twists (turns) per foot.
• All wiring is 18 AWG to 12 AWG.
• All wiring is supervised and power-limited.
• The maximum alarm current is 3 A per circuit.
• Maximum cable load is 10,000 feet (3,048 m) per channel. Maximum wire length from panel to any device is 2,500 feet (762 m).
• The nominal voltage rating is 29 VDC.
• The total available current from the EPS is 9 A.
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Figure 116: Power-Limited Wiring Guidelines
4100ES Fire Alarm System Installation Guide
574-848 Rev. BQ