Honeywell NX4S1 Installation Guide - Page 54

NetAXS™ NX4S1 Installation Hardware Specifications 7.0 Hardware Specifications 7.1 Relay Contacts Four Form-C SPDT relays: • 10 A @ 28 VDC resistive load • 5 A @ 28 VDC inductive load 7.2 Reader Interface • Reader Output Voltage ranges from 11.2 VDC to 12.4 VDC. The maximum Reader Output Current is 600 mA. • Reader LED Output: Open collector driver capable of sinking up to 8 mA. • Reader Tamper: Supervised or non-supervised input. • Reader Data Input: TTL compatible inputs. • Reader Buzzer Output: Open collector driver capable of sinking 8 mA at 15 VDC. 7.3 NX4S1 Wire Requirements • Power: One twisted pair shielded, 18 AWG. • RS-485: 24 AWG, 4,000 ft. (1,200 m) max, twisted pairs with shield, 120 ohm, 23 pf (HAS part number NC2441-TN). • RS-232: Use cable supplied with installation kit (HAS part number CBL50). Maximum distance per COM port is 50 ft. • Supervised Inputs: One twisted pair per input, shielded 30 ohms maximum. • Outputs: As required by load. • Readers: 7 conductors, 18 AWG, shielded, 500 ft. (150 m) max. 7.4 Maximum Output Loading • Maximum current for any of the four reader outputs is 600 mA. • Maximum current for each of the two auxiliary outputs on the NetAXS™ panel is 500 mA. • Maximum battery charge current for the single battery is 350 mA. • Maximum combined current of the four reader outputs and the two auxiliary outputs is 600 mA. • Maximum combined current of the two auxiliary outputs (if used without the four reader outputs) is 500 mA. Notes: • Each of the eight relay output contacts on the panel is rated for either 10 A at 28 VDC (resistive) or 5 A at 28 VDC (inductive). However, they are powered from a separate power supply. • A UL-listed system's power supply must also be UL-listed for this application. 44 www.honeywell.com