The Network Communications Module (Notifier NCM-W) provides NOTIFIER Intelligent Fire Alarm Control Panels, and NCA and NCA-2 Network Control Annunciators with a means to connect to NOTI•FIRE•NET™
Two types of NCM are available: NCM-W for connecting nodes with twisted-pair wire, and NCM-F for connecting nodes with fiber-optic cable.
NOTE: Do not mix NCM and High Speed (HS) NCM on the same system.
NCM-W Features
• Supports twisted-pair wire medium.
• NFPA Style 4 (Class B) operation or NFPA Style 7 (Class A) operation.
• Two programmable data thresholds.
• Transformer coupling provides electrical isolation between nodes.
• Pluggable terminal wiring with strain relief.
• Pluggable service connector (feeds signal directly through) in the event that power must be removed from a node.
• 312.5 Kbaud transmission rate.
• Data is regenerated at each node.
• Two network ports to allow simultaneous connection to fire alarm control panel and to programming computer.
• Enables software and database upload/download over NOTI•FIRE•NET™.
• Repeaters are available to increase signal.
• Repeaters may be utilized to switch media type.
• Up to 3,000 feet (914.4 m) between nodes in a point-to-point fashion (actual distance varies with wire quality).
NCM-W Interconnections: When wiring consecutive NCM-W boards, wiring may enter or exit at Port A or Port B. NCM-W port-to-port wiring is not polarity sensitive; use of Port A or Port B is arbitrary.
An NCM-W may be connected to any of the following devices: MIB-W, MIB-WF, NAM-232W, NCM-W (in another panel), NCS-W network connection, RPT-W, RPT-WF.
NCM-W Switch Functions: The NCM-W provides two sets of switches to simplify network setup. Enable ground fault detection by setting “ON” switch SW103 (Channel A); switch SW101 (Channel B). Activate on-board end-of-line resistors by setting “ON” switch SW100 (Channel A); switch 102 (Channel B).
NOTE: Correct configuration depends on network design; refer to the NOTI•FIRE•NET™ Network manual.
For further information and diagrams, refer to the NCM Installation Document, 51533.
