NFS-320 fire alarm system features

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[object Object],TB3: Battery Connection The NFS-320 requires a secondary power source of 24 VDC. The battery charger output support 18 – 200 AH batteries.

[object Object],TB1: AC POWER: HOT – NEUTRAL – EARTH Primary AC power source – 120 VAC, 50/60 Hz, 5.0 A from the voltage source. Use 12 AWG wire (max) with a 600 – volt rating.

[object Object],Backup Switches Backup alarm switches are provided that enable NACs to activate during a backup alarm condition. If the mainboard´s microcontroller fails and an alarm is reported by any detector or a monitor module that has backup reporting enabled, the NAC will turn on if the corresponding switch is enabled. The alarm relay will activate during microprocessor failure regardless of the settings of switches SW1-SW4.

[object Object],System switches Onboard switches are provided for the execution of Acknowledge, Silence and Reset functions during service and maintenance when a local keyboard/display has not been installed on the CPU-320.

[object Object],KDM Connector The KDM-R2 Keyboard Display interfaces to the CPU-320 via a ribbon cable on J7.

[object Object],Status LEDs Onboard LEDs annunciate the status of critical system status.

[object Object],The Aux Inputs The CPU-320 contains an input for the receipt of auxiliary trouble signals on J6. A short on this input generates a trouble signal.

[object Object],Zone Coder This input is used to interface the NFS-320 to a UZC-256 Universal Zone Coder. Note: The UZC-256 requires 5 VDC power which must be supplied by TB-2 or an auxiliary power supply.

[object Object],Notification Appliance Circuits The NFS-320 can activate a variety of different Notification Appliance along four circuits to provide evacuation throughout the protected premises. Six amps of NAC current is available. Any NAC can alternatively be programmed as a Releasing Circuit. Each circuit supports up to 1.5 amps of current.

[object Object],Relays Form-C Security and Supervisory relays are provided onboard the CPU-320. These relays are rated for 2 A at 30 VDC (resistive).

[object Object],DC Accessories Power Outputs Terminal TB2 supplies two power-limited outputs for powering local accessories. One 24 VDC (nominal) nonressetable circuit provides up to 0-5 amps of current. One 5 VDC (nominal) nonressetable circuit provides up to 0.15 amps.

[object Object],Power Outputs TB10 of the CPU-320 provides two power outputs, one resettable, and one non-resettable for powering external peripherals. Each output is power-limited but not supervised. Power Supervision Relays must be used to supervise the power at the end of these circuits. Each output is power-limited but not supervised. Relays must be used to supervise the power at the end of these circuits.

[object Object],EIA-485 Circuits TB11 provides two outputs for the connection of two classes of remote annunciators.

[object Object],Printer Connection A PRN series printer can be used to print a copy of all status changes within the control panel and time-stamp the printout with the time of day and date the event occurred. A custom cable with a DB-25 female connector is needed for connection to the control panel. The EIA-232 output is power-limited but not supervised.

[object Object],Network Connection The Notifier Universal Protocol (NUP) port is used to integrate the NFS-320 to a network. This connection uses a NUP cable to connect to a Network module.

[object Object],Verifire Tools Connections (J2, J3, NUP) Two USB port types are provided to allow the Verifire Tools programming utility to upload/download the operating program. For computers without a USB port, connection can be made between the PC´s serial port and CPU´s J1 NUP port.

[object Object],NACs and DC Power Outputs NOTE: The NACs and DC Power Outputs share a pool of 6 amps in alarm or 3 amps during standby.

SLC Loop The Signaling Line Circuit (SLC) of the NFS-320 is integral to the CPU-320. This circuit provides the system with a standard capability to support up to 159 Intelligent detectors and 159 Addressable Modules. B(+) A(+) B(-) A(-)

[object Object],JP1 Ground Fault Jumper. Cut to permanently disable ground fault sensing on the SLC Loop.

[object Object],200 mA Jumper Cutting jumper JP2 reduces the available current on the SLC loop in applications where this additional power is needed elsewhere. This restricts SLC operation to CLIP devices only. It is recommended that this jumper NEVER be cut.

[object Object],LED10 This micro-LED indicates that a Ground Fault condition exists on the SLC Loop.

[object Object],Earth Fault LED LED3 indicates that a general board ground fault condition exists somewhere within the mainboard.

[object Object],Ground Fault Switch A Ground Fault Disable/Enable switch (SW1) is provided for applications in which another component of the system, such as another power supply or fire alarm control panel, is providing ground fault detection.

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[object Object],The NFS-320 can interface to an NFV-25/50ZS Fire Voice Evacuation System to control messages and control circuit activation. This action is accomplished through software zone programming and an EIA-485 connection to the voice system, making it ideal for small, single channel voice evacuation applications. For application requiring more than eight speakers circuits, the NFV-25/50ZS can be expanded using NFV-25/50DAZS Distribuited Audio Panels, providing up to twenty for speakers circuits that can be controlled via the serial communication link.

NFS-320 fire alarm system features

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