SigCom (MNS-100EXP) Mass Notification System

The SIGCOM MNS-100EXP is a highly modular, state-of-the-art, emergency communications system providing highly configurable and reliable command and mass communication capabilities for any emergency situation, including fire and weather emergencies, terrorist events, biological, chemical and nuclear emergencies, and other threats. The MNS-100EXP meets the stringent requirements of NFPA 72, UL864 9th edition, and UFC 4-021-01.

The MNS-100EXP accommodates virtually any host alarm system, integrating as quickly and easily as a single primary connection to an NAC output from the FACP. Many of the pre-set configurations will provide a complete mass notification capability right out of the box. Additional activation is by a single supervised input from a dry contact closure, or by 8 dry contact closures.

Numerous audio inputs are provided for maximum control flexibility and system access. A supervised remote microphone input is provided for central placement for emergency personnel. A high priority supervised audio input is provided that overrides lower priority activations. The system also provides a 25 VRMS speaker-level input to allow audio power booster operation (see below). An additional nonsupervised audio input is provided; this lowestpriority input can be used for paging or background music as application needs dictate.

A highly efficient, Class D, 100 Watt digital audio power amplifier drives four selectable power-limited speaker circuits in the standard configuration. All speaker circuits are continuously supervised, even while activated. Each speaker can be configured for Class A or B wiring without loss of speaker circuits.  Amplifier output voltage is 25 VRMS standard. An optional transformer can be configured for 70 VRMS output for longer speaker runs with low signal loss. An audio power boost option is also available for additional output power in multiples of 100 Watts.

The MNS-100EXP provides simple field programming of a variety of its features. These can be as simple as its response to contact closure inputs, or to the setting of internal SIP-switch banks.  Of particular note is the capability of selecting a time-out feature, which halts message playback after a set interval of 10 minutes.

The power supply, battery back-up, charger are provided internally to the MNS-100EXP. LED indicators are provided for POWER (green), ACTIVE (red), and SYSTEM FAULT (yellow).  External communications to the MNS-100EXP is provided through an RS-232/485 serial port, which will accept signals from other devices in a system such as a DTX Radio Master Box or properly configured FACP. The MNS-100EXP is housed in a 14-3/16”W x 31-5/8”H x 4”D surface or semi-flush mounted painted steel enclosure.

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