Notifier NCM-W, NCM-F Installation Documentation

12 Clintonville Road
Northford, CT 06472-1653 USA
www.notifier.com

NCM Installation Document

Network Communications Module NCM-W, NCM-F

PN 51533:A1 03/27/03 ECN 03-171

1 Product Overview

The Network Communications Module (NCM) provides a means for connecting specific Notifier fire
alarm control products to NOTI•FIRE•NET™. There are two types of NCMs available: NCM-W for
connecting nodes with twisted-pair wire, and NCM-F for connecting nodes with fiber-optic cable.

1.1 The Network Communications Module for Wire (NCM-W)

Ground Fault
Detection
Switches
and
Network
End-of-Line
Termination
Resistor
Switches

Diagnostic
LEDs

Not used

EF B TERM B

EF A TERM A

SW101

SW103

SW102

SW100

ON OFF

LED101 LED100

B HI

A HI

LED6 LED7

RCDA RCDB

LED4 LED2

STATA STATB

LED3 LED5

RECONPULSE1

LED1 LED8

RESET POWER

LCMATERM

A

OFF

ON

SW1

SW2

Figure 1 NCM-W

Channel
A & B

ON OFF

J3 J2

NUP1

NUP2

LCM ALCM B

Connections

Network
Connection
Ports
(NUP)

NCM-w.cdr

• 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™.

• Refer to the

NOTI•FIRE•NET™

Version 4.0 and Higher) for wiring length and threshold
information.

1.2 The Network Communications Module for Fiber (NCM-F)

Diagnostic
LEDs

Not used

Channel
A & B
Connections

Network
Connection
Ports
(NUP)

NCM-f.cdr

Figure 2 NCM-F

• Supports fiber-optic medium.

• NFPA Style 4 (Class B) or Style 7 (Class A) operation.

• Data is immune to all environmental noise.

• Optical isolation prevents ground loops.

• NOTI•FIRE•NET™ fiber optic medium.

• Fiber type:

• 62.5/125 micrometers (multimode, 8 dB limit)

• 50/125 micrometers (multimode, 4.2 dB limit)

• Wavelength (1): 820 nanometers. (Use standard 850 nm
fiber.)

• Connectors: ST® Style (ST® is a registered trademark of
AT & T) .

• 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™.

Manual (Network

NCM Installation PN 51533:A1 03/27/03

2 Installing the NCM

2.1 Interconnecting the NCM-W

When wiring consecutive NCM-W boards, note that wiring may enter or exit at Port A or Port B as
shown in Figure 4. NCM-W port-to-port wiring is not polarity sensitive. The 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

For information regarding these devices, refer to the documentation listed in Table 4 “Supplemental
Documentation”.

From last node,

Port A

B

A

To next node,

Port B

B

A

EF B TERM B

SW101

EF A TERM A

SW103

SW102

ON OFF

SW100

ON OFF

EF B TERM B

SW101

SW102

EF A TERM A

SW103

SW100

ON OFF

ON OFF

ote: Wiring from the NCM-W that is installed outside the building:

Cannot exceed 1000m (3280 ft.).
Must be in conduit and is to be buried in a trench separate from any power lines.
Cannot cross any power lines.

Figure 3 The NCM-W

TB100-1 CH-A (+) Channel-A Driver/Receiver

TB100-2 CH-A (-) Channel-A Driver/Receiver

TB100-3 CH-B (+) Channel-B Driver/Receiver

TB100-4 CH-B (-) Channel-B Driver/Receiver

TB100-5 Earth Ground

Tab le 1 NOTI•FIRE•NET™ Connections: NCM-W

Switch Functions: Ground Fault Detection and Line Termination

The NCM-W provides two sets of switches to simplify
network setup; in Figure 4 all are in the “off” position.

• Enable ground fault detection by setting
switches “on”: SW103 for Channel A, and
SW101 for Channel B.

EF B T ERM B

SW101

SW102

EF A TERM A

ON OFF

SW103

NCM-w-connex.cdr

SW100

ON OFF

• Activate on-board end-of-line resistors by
setting switches “on”: SW100 for Channel A;
SW102 for Channel B.

Figure 4 NCM-W Switches

Note: Correct configuration depends on your network
design; refer to the

NOTI•FIRE•NET™

Manual (Network Version 4.0 and Higher).

2 NCM Installation PN 51533:A1 03/27/03

ncm-w-switches.cdr