Johnson Controls NU-NCMFIRE-1 Technical Manual

IFC-1010/2020 Technical Manual 448

IFC Networking Section

Technical Bulletin

Issue Date 0300

Code No. LIT-448196 www.johnsoncontrols.com

Introduction Page 3

• Application Details *3

• Theory of Operation *10

• Specifications *11

Engineering Procedures 13

• Planning Considerations 13

• Design Considerations *15

• Ground Fault Detection 36

• Point-To-Point Configuration 37

Installation Procedures 43

• Connecting the Fire OWS 43

• Connecting the Fire-Net NCM 43

• Connecting an IFC Panel *44

• Connecting an INA *45

Commissioning and Troubleshooting Procedures 47

• Setting the Ground Fault Switch 47

• Node Addresses *47

• IFC Panel System Programming for Style 7 FN 49

• FN Stats Program 51

• LED Indicators *56

Metasys Intelligent Fire Network

*Indicates those sections where changes have occurred since the last printing.

2 IFC Networking—Metasys Intelligent Fire Network

Secondary Reporting Page 59

• Secondary Reporting Configuration *59

• Capacity *59

• Commissioning Procedures 60

• Windows NCM350 Setup *60

• Changing Threshold and Style *61

• N2 or FN Connection *61

Appendix 63

• Cooperative Control-By-Event 63

• IFC Panel CCBE Programming 65

• System Software Zones 68

*Indicates those sections where changes have occurred since the last printing.

IFC Networking—Metasys Intelligent Fire Network 3

Introduction

The Metasys® Intelligent Fire Network (MIFN) can be set up for

operation in two separate configurations. The Primary Reporting MIFN

utilizes the Fire OWS (Operator Workstation) and is defined in this

document (see Figure 1). The Secondary Reporting configuration (see

Figure 28) of the MIFN provides secondary (ancillary) reporting of alarm

and trouble conditions on a standard Operator Workstation (OWS). Unlike

the Primary configuration of the MIFN where the Fire OWS is

Underwriters Laboratories (UL) 864 UOJZ Listed as a Proprietary

Protective Signaling Station, the standard OWS in the Secondary

Reporting configuration is not UL Listed for fire alarm operation and only

serves as a Secondary annunciator for the MIFN. For example, in the

Primary configuration, the Fire OWS can reset the fire controllers.

However, in the Secondary Reporting configuration, the control of the fire

alarm panels is limited to viewing and adjusting detector sensitivity,

enabling or disabling alarm verification, and enabling or disabling

day/night sensitivity. The standard OWS communicating with

IFC-1010/2020 panels in the Secondary Reporting configuration of the

MIFN cannot acknowledge alarms, control fire points, or reset IFC panels.

All information in this document pertains to both the Primary Reporting

and the Secondary Reporting configuration unless indicated otherwise

(see the Secondary Reporting section of this document for the exceptions

and differences in configuration).

The Primary Reporting Metasys Intelligent Fire Network is an interface

that allows Intelligent Fire Controller (IFC) fire alarm system products and

the Fire OWS to communicate over a true peer-to-peer network while

meeting the requirements of UL 864 UOJZ and NFPA 72 for Local and

Proprietary Protective Signaling Systems.

Note: Proprietary systems as defined by the National Fire Protection

Association National Fire Alarm Code (NFPA 72) are installations

of fire alarm systems that serve contiguous and noncontiguous

properties under one ownership from a Proprietary Protective

Supervising Station located at the protected property. Trained,

competent personnel must be in constant attendance at the

supervising station. In addition, the Proprietary Protective

Supervising Station must be located in a fire-resistive, detached

building or in a suitable cutoff room where it is not exposed to the

hazardous part of the protected facility.

Application

Details

4 IFC Networking—Metasys Intelligent Fire Network

!

WARNING: Personal Injury Hazard. Each Proprietary

Protective Signaling System must have established

procedures that the operator will follow in the

event of an alarm or other report.

Based on the ARCNET® Local Area Network (LAN), the FN uses

high-performance technology to communicate various types of

information including fire system reports, shared point and control

information, summaries, commands to devices, and Change-of-State

(COS) messages. This information is communicated between the

FN nodes, which are IFC panels, Fire OWSs (Operator Workstations),

Fire-Net NCMs, and local Intelligent Network Annunciators (INAs). All

of the information is also shared with the Metasys Facility Management

System (FMS); however, only a limited number of commands to the

IFC panels may be initiated from the standard FMS Operator Workstation.

Figure 1 shows an example of the Primary Reporting FN connected to

FN nodes in a Style 7 configuration and communicating with the Metasys

FMS N1.

The FN supports communications over twisted pair wire, fiber optic cable,

and a combination of both wire and fiber optic cable. Either a

NFPA Style 7 (Class A) or NFPA Style 4 (Class B) FN Signaling Line

Circuit (SLC) is provided for internode communication to meet the

requirements of NFPA 72. The FN can be configured as either bus

(Style 4, twisted pair wire only) or point-to-point.

To achieve the best communication reliability across the network and for

best fault tolerance, use Style 7 whenever possible.

IFC Networking—Metasys Intelligent Fire Network 5

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Figure 1: Primary Reporting Metasys Intelligent Fire Network

in a Style 7 Loop Topology

6 IFC Networking—Metasys Intelligent Fire Network

FN nodes connect to the FN via Media Interface Boards (MIBs) and are

assigned network node addresses to identify them on the FN. The

Fire OWS and Fire-Net NCM also use those same addresses on the N1.

The Fire OWS and the Fire-Net NCM use an MIB-OWS, consisting of a

MIB that is mounted on an ISA board. The IFC panels and INAs use a

MIB attached to either a Serial Interface Board (SIB-NET) (IFC panel) or

on the main INA circuit board.

The Fire OWS and Fire-Net NCM node addresses must be within certain

ranges. The IFC panel and INA node addresses are not restricted to

particular numbers; however, they cannot use the numbers that are

reserved for the Fire OWS and Fire-Net NCMs. For more information, see

the Node Addresses section of this technical bulletin.

The components of the FN include:

• FN nodes

• intelligent addressable monitor/control modules connected to an

IFC panel node

• initiating devices and notification appliances connected to an

IFC panel node

Intelligent fire controllers, annunciators, and workstations that connect

to the FN and communicate with other fire system equipment using the

FN are referred to as FN nodes. The FN supports up to 50 nodes.

For descriptions of each type of node, see Table 1.

For more information on monitor/control modules, initiating devices, and

notification appliances, refer to the Fire Initiating Devices and

Notification Appliances Technical Manual (FAN 408) and the other

technical bulletins in the IFC-1010/2020 Technical Manual (FAN 448).

!

CAUTION: Only use the hardware specified by Johnson Controls

and listed in the documentation. If other hardware is

used, the Fire Network will not meet the UL 864

UOJZ requirements.

Components

IFC Networking—Metasys Intelligent Fire Network 7

IFC-1010/2020 Fire Panels

The IFC panel collects information from addressable pull stations,

modules, detectors, and transponders and sends commands to addressable

control modules and transponders connected to the IFC Signaling Line

Circuit (SLC) communication circuits. The IFC panel makes this

information accessible to other nodes connected to the network.

Information from the panel may include the following signals: fire alarm,

security alarm, trouble, supervisory, and zone status. ACM Series

annunciator points programmed in an IFC panel can also communicate

through the FN with similar physical annunciator points programmed in

an INA.

Note: Only the IFC-1010/2020 panels are UL 864 Listed for use with

the FN.

Fire OWS

The Fire OWS is a computer-based platform that displays network

information and organizes the network into programmed groups of

IFC panels associated with each Fire-Net NCM. The Fire OWS is

UL 864 UOJZ Listed as the Proprietary Supervising Station in a NFPA 72

Proprietary Protective Signaling System for fire alarm applications.

The Fire OWS also contains a history file that can record events and

actions that have occurred in the network.

The Fire OWS, dedicated printer, fire watchdog timer, and Fire-Net NCMs

are not required when the FN is configured to comply with the UL Local

Fire Alarm Listing. In that configuration, an INA can serve as the central

annunciator for all of the IFC panels connected on the FN.

Fire-Net NCM

The Fire-Net NCM is a special and unique UL Listed NCM300-type

controller used to coordinate annunciation between IFC panels and the FN,

and between the IFC panel and the Fire OWS. See the Network Control

Module 300 Series Technical Bulletin (LIT-6360251) in the Metasys

Network Technical Manual (FAN 636).

Intelligent Network Annunciator (INA)

The INA is UL Listed and can display and store network information

generated by IFC panels on the network. The INA can perform global

reset, signal silence, and acknowledge commands for the network, as long

as all of the IFC panels are within a single building. The INA has

EIA-RS232 printer and CRT terminal interfaces used to record/display

network status and an EIA-RS485 interface for ACM Series annunciators.

8 IFC Networking—Metasys Intelligent Fire Network

If a network has both a Fire OWS and an INA, use the INA as a

display-only device unless the Fire OWS or Fire-Net NCM fails. In that

case, use the INA as a backup Person-Machine Interface (PMI) device.

See the Intelligent Network Annunciator (INA) Technical Bulletin

(LIT-448193) for more information.

When the INA is applied to an FN that has IFC panel nodes in more than

one building, the keypad of the INA must be disabled to comply with the

UL Listing, which does not allow signal silence commands from the INA

to more than one building.

Repeaters

The UL Listed repeaters extend communication distances between

FN nodes by boosting data signals. For more information, refer to the

Repeaters Technical Bulletin (LIT-448197).

Table 1: FN Node Components

Code Number

Description

WD-TIMER-FIRE

Metasys Fire Watchdog Enclosure with Relay (required for each Fire OWS)

NU-NCMFIRE-1

Metasys Fire-Net NCM. This can either be housed in a Fire Watchdog Enclosure or an

EN-EWC35-0 enclosure. See the Universal Packaging Module (UPM) Product Bulletin

(LIT-635044) for details on the enclosure.

FIREOWS-PC-02

Metasys Fire OWS PC with Metasys and Fire OWS Software, Keyboard, and Mouse

FIRE-MON-17

FIRE-MON-21

Choose from one of the following monitors for each Fire OWS:

17 in. Metasys Fire OWS Monitor

21 in. Metasys Fire OWS Monitor

MIB-OWS-F-0

MIB-OWS-WF-0

MIB-OWS-W-0

Choose from the following for use with each Fire OWS and Fire-Net NCM:

Fiber Optic Media Interface Board (MIB)

Fiber Optic/Copper MIB

Copper Wire MIB

MIB-F

MIB-WF

MIB-W

Choose from the following for use with each IFC panel and each INA:

Fiber Optic MIB

Fiber Optic/Copper MIB

Copper Wire MIB

SIB-NET

Serial Interface Board required for the IFC panel to connect to the MIB.

RPT-F

RPT-WF

RPT-W

Fiber Optic Repeater

Fiber Optic/Copper Repeater

Copper Wire Repeater

INA

Intelligent Network Annunciator

PRN-4 or PRN-3

Dedicated (required for each Fire OWS) and Optional Printers

IFC Networking—Metasys Intelligent Fire Network 9

The table below is a list of all the Fire Network (FN) literature. The

document name, number, and manual names are listed.

Table 2: Related Documentation

Document Name

Document

Number

Manual

Sales Literature

Metasys Intelligent Fire Network Product

Bulletin

LIT-447032 Fire Management Sales Resource

Manual (FAN 447)

Metasys Intelligent Fire Network Media Options

Product Bulletin

LIT-447034 Fire Management Sales Resource

Manual (FAN 447)

Fire Operator Workstation (Fire OWS) Product

Bulletin

LIT-447036 Fire Management Sales Resource

Manual (FAN 447)

Intelligent Network Annunciator (INA) Product

Bulletin

LIT-447038 Fire Management Sales Resource

Manual (FAN 447)

Technical Literature

Metasys Intelligent Fire Network Technical

Bulletin

LIT-448196

IFC-1010/2020 Technical Manual

(FAN 448)

Fire Operator Workstation (Fire OWS) Technical

Bulletin

LIT-636014 Metasys Network Technical Manual

(FAN 636)

Fire OWS section

N/A

Metasys Operator Workstation User’s

Manual (FAN 634)

Network Control Module 300 Series Technical

Bulletin

LIT-6360251 Metasys Network Technical Manual

(FAN 636)

Fire System Objects Technical Bulletin

LIT-636104 Metasys Network Technical Manual

(FAN 636)

Serial Interface Board (SIB-NET) Technical

Bulletin

LIT-448190

IFC-1010/2020 Technical Manual

(FAN 448)

Intelligent Network Annunciator (INA) Technical

Bulletin

LIT-448193 IFC-1010/2020 Technical Manual

(FAN 448)

Repeaters Technical Bulletin

LIT-448197

IFC-1010/2020 Technical Manual

(FAN 448)

10 IFC Networking—Metasys Intelligent Fire Network

The FN works in conjunction with the Metasys N1 LAN to provide

a complete system of fire alarm, security alarm, and HVAC

(Heating, Ventilating, and Air Conditioning) control. The Fire

OWSs and Fire-Net NCMs are connected to both the FN and N1 LAN,

while the IFC panels and INAs are only connected to the FN. The FN is

the fire alarm system communication path; however, if path resources are

available on the N1 LAN, fire alarm system communication may use the

N1 LAN.

When the fire alarm system requires commissioning and/or maintenance,

communication uses the N1 LAN. In addition, the N1 LAN provides the

interface between the fire alarm, energy management, and smoke control

systems.

Only Metasys components connected to the FN communication circuit are

UL Listed for fire alarm service. Metasys components connected

exclusively to the N1 communication circuit are not part of the fire alarm

system and do not need to be UL Listed for fire alarm service.

For details on the N1 LAN, refer to the N1 ARCNET Local Area Network

Technical Bulletin (LIT-636017) in the Network Communications section

of the Metasys Network Technical Manual (FAN 636).

Theory of

Operation

IFC Networking—Metasys Intelligent Fire Network 11

Table 3: Specifications

Product

Metasys Intelligent Fire Network

Topology Choices

FN configurable as: Ring (recommend Style 7) or as Star,

Bus, or Hybrid (which are Style 4 configurations).

FN Media Types Non-shielded Wire (12 to 18 AWG, twisted pair,

3,000 ft maximum)

Fiber Optic Cable (dual-fiber, multi-mode,

62.5 x 125 micrometers,

820 nanometers wave length,

ST style connectors, 10 dB maximum

signal attenuation per segment).

Combination of Wire and Fiber Optic

NFPA Style 4 (Class B) or Style 7 (Class A). For distance

capabilities of each medium, see the Twisted Pair Copper

Wire Circuits or the Fiber Optic Cable Circuits sections of this

technical bulletin.

Data Transfer Rate

312.5K baud

ARCNET technology

Number of Nodes

Allowed

50 maximum

Number of

IFC Panels per

Fire-Net NCM

10 maximum (On the Secondary Reporting Fire Network, a

maximum of four IFC panels can be connected to the

NCM-350.)

Recommended

Ambient Operating

Conditions

10 to 40°C (50 to 104°F)

20 to 80% RH

Agency Listings

UL 864 UOJZ Listed

Termination Method

Terminating resistors on MIBs and repeaters for FN wire media

Power

Requirements

Fire OWS PC* 115 V (90-135 VAC) at 3.5 amperes

or 230 V (180-265 VAC) at

2.0 amperes

Fire-MON -17* 100 to 120 VAC at 2.5 amperes or

Fire-MON -21* 200 to 230 VAC at 1.5 amperes at

50 to 60 Hz

Fire Watchdog *2 watts, 120 VAC, 0.0166 amperes

Enclosure* at 60 Hz

Fire-Net NCM* 120 to 230 VAC, 500 mA at

50-60 Hz

PRN-3 Printer* 0.66 amperes, 120 V, 60 Hz,

0.5 amperes while printing

PRN-4 Printer* 0.66 amperes, 120 V, 60 Hz,

0.5 amperes while printing

INA 24 VDC with secondary battery

power source, 0.250 amperes

standby

IFC-1010/2020 Panel 120 VAC, 1.8 amperes at

50-60 Hz**

* Must be connected to an Uninterruptable Power Supply (UPS) that is UL 1481 Listed

or Recognized.

** This rating is based on full use of the power supply capacity and excludes the power

requirements for high capacity battery chargers and/or optional notification appliance

circuit power supplies, which may be required to supplement the main power supply

and/or audio amplifier power requirements.

Specifications

12 IFC Networking—Metasys Intelligent Fire Network

IFC Networking—Metasys Intelligent Fire Network 13

Engineering Procedures

The operating environment of the FN nodes must maintain operating

temperatures between 10-40°C (50-104°F) while maintaining relative

humidity at a value of 20-80%. The atmosphere must be free of corrosive

chemical vapors that may damage electronic equipment. The Fire OWS

has additional considerations regarding dust in the environment. For

additional environmental information specific to the Fire OWS, refer to

the Fire Operator Workstation (Fire OWS) Technical Bulletin

(LIT-636014) in the Metasys Network Technical Manual (FAN 636).

All components of the FN must be provided with a standby power supply.

The power supply must provide energy to the components automatically

within 30 seconds without loss of signals if the primary power source is

incapable of providing the minimum voltage for proper operation.

The following FN components are not capable of operating directly from a

24 VDC source of standby power:

• Fire OWSs

• dedicated printers

• Fire-Net NCMs

• Fire Watchdog Enclosure including the watchdog timer

You must supply two forms of emergency power for these devices as well

as any other FN devices that cannot be powered by 24 VDC battery

backup systems. One is an Uninterruptable Power Supply (UPS) system

that is UL 1481 Recognized with sufficient capacity to operate each

component for at least 15 minutes or until the secondary supply is capable

of supplying the UPS input power requirements. La Marche

Manufacturing Co. has an UPS power supply that is UL 1481 Recognized.

For details, contact: La Marche Manufacturing Co., 106 Bradrock Drive,

Des Plaines, IL 60018 (1-847-299-1188).

The second is a system that can supply 120 VAC with sufficient capacity

to operate these devices under a maximum load for 24 hours. This power

must be provided by multiple engine-driven generators, one of which is

arranged for automatic starting.

Environment

Planning

Considerations

Power

14 IFC Networking—Metasys Intelligent Fire Network

Note: The IFC panel and INA power supplies have built in UPSs. If the

Fire Network is operated in only the Local Fire Alarm System

configuration (as defined in NFPA 72 and by the UL Listing), then

the Fire OWS, dedicated printer, Fire watchdog timer, and the

Fire-Net NCM are not required. In this case, neither the UPS nor

the multiple engine-driven generators for these components are

required.

The UPS must be sized to supply standby operating power of the time

specified in applicable fire alarm building codes and be acceptable to the

Authority Having Jurisdiction (AHJ), which may exceed the NFPA

requirements. If the FN does not have to be installed to meet the NFPA

and/or local building code requirements, it may be possible to provide

considerably smaller capacity power supplies (Tables 3 and 4).

!

CAUTION: If the FN is configured for and being operated as a

Proprietary Fire Alarm System—as defined in

NFPA 72 and the UL Listing—the computer,

dedicated printer, watchdog timer, and Fire-Net

NCM must be powered into a UPS. Make sure the

UPS is recognized by the Authority Having

Jurisdiction (AHJ).

Table 4: Power Requirements

Component

Power Requirements

Fire OWS PC*

115V (90 to 135 VAC) at 3.5 amperes or

230V (180-265 VAC) at 2.0 amperes

Fire-MON-17*

Fire-MON-21*

100 to 120 VAC at 2.5 amperes or

200 to 230 VAC at 1.5 amperes at 50 to 60 Hz

Fire Watchdog

Enclosure*

2 watts, 120 VAC, 0.0166 amperes, at 60 Hz

Fire-Net NCM*

120 to 230 VAC, 500 mA at 50-60 Hz

PRN-3 Printer*

0.66 amperes, 120V, 60 Hz, 0.5 amperes while printing

PRN-4 Printer*

0.66 amperes, 120V, 60 Hz, 0.5 amperes while printing

INA

24 VDC with secondary battery power source,

0.250 amperes standby

IFC-1010/2020 Panel

120 VAC, 1.8 amperes at 50/60 Hz**

* Must be connected to an Uninterruptable Power Supply (UPS) that is UL 1481 Listed

or Recognized.

** This rating is based on full use of the power supply capacity and excludes the power

requirements for high capacity battery chargers and/or optional notification appliance

circuit power supplies, which may be required to supplement the main power supply

and/or audio amplifier power requirements.

IFC Networking—Metasys Intelligent Fire Network 15

When designing the wiring layout of a FN system, you need to develop a

plan for the entire network that best suits your facility and that complies

with the NFPA 72 standards, the UL 864 Listing, and local codes. There

are specific distance limitations on the FN system communication path

length and circuit segment lengths that relate to the type of configuration,

media, and connections you choose.

This section explains the types of configuration, communication media,

media interface boards, and connections that are available, and shows the

distance limitations you have to work with. Terminating resistors and

ground fault detection on wire systems is also covered. In addition, the

Installation Procedures section details how to connect each FN node to

the FN.

To make sure the FN is functioning properly, a program called FN Stats

can be used to verify that the Fire OWSs and Fire-Net NCMs are

communicating across the network. A step-by-step guide of FN Stats is

included in the Commissioning and Troubleshooting Procedures section

of this technical bulletin.

You need to determine which options you’ll use to design the system,

including:

• network communication configuration: Style 4 or Style 7

• media which includes wire, fiber optic cable, or a combination of wire

and fiber optic cable

• media interface board for each FN node

• internode connection: bus or point-to-point

Distance limitations also need to be considered when designing the system

and vary per medium selected. For details, refer to Distance Capabilities

in the Engineering Procedures section later in this bulletin.

Design

Considerations

16 IFC Networking—Metasys Intelligent Fire Network

To meet the UL 864 Listing, the FN must be wired according to

either NFPA Style 7 (Class A) or NFPA Style 4 (Class B)

standards. The difference between the two styles is evident when a single

break or short occurs. A Style 7 circuit will provide an alarm indication

with a single open, a single ground, a wire-to-wire short, or an open and a

ground, because the communication circuit forms a loop (Figure 2). In

other words, with a single fault on the circuit, there is an alternate path for

communication between nodes. A Style 4 will provide an alarm with a

single ground fault, but may not provide an alarm with any of the other

fault types on the circuit and will not communicate with any nodes that are

attached on the network beyond the single break or short (Figure 3).

Node 3

Node 2

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

Node 4

Node 5

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

Style7

With a single open,

single ground, a

wire-to-wire short,

or an open and a ground,

all network nodes can still

send an alarm to the

Fire OWS and other nodes.

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

Node 6

Node 1

Figure 2: Style 7 Communication with a Single Break

Node 3

Node 1

Node 2

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

Node 4

Node 5

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

style4

With a single break

communication is

severed, Nodes 5 and 6

can no longer communicate

with Nodes 1-4 and additional

communication faults may occur.

)

INT ELLIG ENT FIR E DE TECTIO N AND ALAR M SYSTE M

Node 6

Network 1

Network 2

Figure 3: Style 4 Communication with a Single Break

Choosing a

Wiring Style

IFC Networking—Metasys Intelligent Fire Network 17

Table 5: Performance Comparison of Style 7 and Style 4

Feature

Style 7

Style 4

Single Break or Short

Communication continues to

all nodes on the network.

Communication loss

Media Type

Wire, fiber optic, or

wire/fiber optic combination

Wire, fiber optic, or

wire/fiber optic combination

Connection Type

Point-to-point only

Bus or point-to-point

Changes to IFC Panel

Programming?

Need to system program at

panel. (See the IFC Panel

System Programming for

Style 7 FN in the

Commissioning and

Troubleshooting Procedures

section of this document.)

No changes needed; Style 4

is default.

Changes to Software?

Need to change

METASYS.INI file either on

installation or in text editor.

(See the Style 7 Operation

section of this document.)

No changes needed; Style 4

is default.

For additional information regarding Style 4 and Style 7 wiring styles,

refer to the Performance and Capacities of Signaling Line Circuits section

of the NFPA 72, National Fire Alarm Code.

18 IFC Networking—Metasys Intelligent Fire Network

Style 7 Operation

Under Style 7 operation, a single open, single wire-to-wire short, single

wire-to-wire short and open, single wire-to-wire short and ground, or

single open and ground will not affect the system’s ability to receive an

alarm condition and transmit the condition across the FN to all nodes. The

ability to receive alarms will continue with a single occurrence of any of

the above situations, while the system displays a trouble condition. A

single ground does not affect communication, but can be detected and

reported as a trouble.

For Style 7, all network nodes must be connected point-to-point to form a

loop.

If you decide to use Style 7, you will need to do the following software

programming changes:

1. In the OWS METASYS.INI file, change the default Style 4 parameter

to Style 7. You may do this either during software installation or in a

text-editing tool after installation. See the Fire Operator Workstation

(Fire OWS) Technical Bulletin (LIT-636014) for details.

2. In all IFC panels that are connected to the Style 7 FN, manually change

the default from Style 4 to Style 7. To do so, follow the steps in the

IFC Panel System Programming for Style 7 FN section of this

technical bulletin.

Note: This is not the programming of the Style wiring used for the

IFC panel’s SLC connecting the addressable devices to the panel.

3. Use NCSETUP for Windows



95 and Windows 98 to change the

Fire-Net NCM to Style 7. See the FN Configuration section of the

NCSETUP for Windows Technical Bulletin (LIT-6360251d) located in

the Metasys Network Technical Manual (FAN 636).

4. Change the INAs programming to Style 7. See the Partial System

Programming section of the Intelligent Network Annunciator (INA)

Technical Bulletin (LIT-448193) located in the IFC-1010/2020

Technical Manual (FAN 448).

IFC Networking—Metasys Intelligent Fire Network 19

Style 4 Operation

Under the Style 4 operation, the following faults on a FN segment result in

communication loss:

• a single open

• a single wire-to-wire short

• a single wire-to-wire short and open

• a single wire-to-wire short and ground

• a single or open and ground

In addition, the above conditions can cause the IFC panels electrically

beyond the fault to lose communication to the Fire OWS, as well as the

rest of the Metasys FMS system. A single ground does not affect

communication, but can be detected. Each fragment of the network on

either side of a cable fault may reconfigure to permit communication

among the nodes within the fragment.

All network nodes are normally configured for Style 4 in the software.

Network nodes that use both Port A and Port B of the MIB, however, can

be configured for Style 7 in software to pinpoint, when necessary, which

port is having a communication problem. This, however, does not make

the network Style 7.

The communication media choices for the FN include unshielded twisted

pair copper wire, fiber optic cable, or a combination of the two. Both

twisted pair wire and fiber optic cable have distance limitations, and the

procedures differ for determining permissible segment length. For details,

refer to either the Twisted Pair Copper Wire Circuits or the Fiber Optic

Cable Circuits sections that follow.

Twisted Pair Copper Wire Circuits

When using twisted pair copper wire, the cable manufacturer and part

number of the twisted pair wire should be selected to satisfy code and

specific application requirements. Refer to Table 6 for descriptions of

specific cable types used with the FN.

The length of individual circuit segments is limited by attenuation of the

cable selected. The maximum length depends on the selected receiver

threshold setting and is listed in Table 6. The low threshold setting makes

the receiver more sensitive to both signal and noise. The high threshold

setting makes the receiver more immune to noise but requires a stronger

signal, which is equivalent to a shorter distance limit. If the distance

required for a circuit segment is greater than permitted, a Repeater module

(Model RPT-W) must be inserted into the circuit segment at intervals less

than or equal to the length restriction.

Choosing an FN

Communication

Medium

20 IFC Networking—Metasys Intelligent Fire Network

You are not limited to using only one type of wire on the FN. You can

vary the type of wire used on separate circuit segments as long as the

two kinds of wire do not physically connect together.

Using a different port on the same MIB/MIB-OWS does not constitute a

physical connection. However, if you have two different types of wires

connecting to a node, the difference in wire characteristics may affect the

operation of the system when the node is powered down.

Note: Make sure when connecting network nodes between buildings that

the twisted pair wire is in an underground conduit, separate from

all power wiring.

Table 6: Twisted Pair Cable Lengths per Cable Segment

Permissible Distance in Feet for Each

Cable Segment (Related to High/Low

Threshold Setting)

Cable Manufacturer,

Part Number,

Gauges/Conductors

Manufacturer’s

Specifications

Point-to-Point

Configuration

2 Nodes/Repeaters

Bus

Configuration

3 to 7

Nodes/Repeaters

High

Low

High

Low

Belden 9580,

14 AWG,

1 Pair Unshielded

FPLR,

NEC Article 760,

UL 1424

1-1,400

1,300-

3,000

1-100

N/A

Belden 9572 ,

16 AWG,

1 Pair Unshielded

FPLR,

NEC Article 760,

UL 1424

1-1,300

1,200-

1,300

1-100

N/A

Guardian E2572S,

18 AWG,

1 Pair Unshielded

Mid-Capacitance,

FPL, PVC, NEC

Article 760, UL 1424

1-1,200

1,000-

3,000

1-100

N/A

Atlas 228-18-1TP-2,

18 AWG,

1 Pair Shielded

Low Capacitance,

FPL, PVC,

NEC Article 760,

UL 1424

1-1,200

1,000-

3,000

1-100

N/A

Signal 82802-06-04,

18 AWG,

1 Pair Unshielded

Mid-Capacitance,

FPL, PVC, NEC

Article 760, UL 1424

1-1,200 1,000-

2,800

1-100 N/A

Signal 98181-06-04,

18 AWG,

1 Pair Unshielded

Mid-Capacitance,

FPL, PVC, NEC

Article 760, UL 1424

1-1,200 1,000-

2,800

1-100 N/A

West Penn Wire D980,

18 AWG,

1 Pair Unshielded

FPL, PVC,

NEC Article 760,

UL 1424

1-1,200 1,000-

3,000

1-100 N/A

Brand-Rex 93782-01,

16 AWG,

1 Pair Unshielded

Contact Manufacturer 1-1,400 1,200-

2,000

1-100 N/A

Continued on next page . . .

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Johnson Controls NU-NCMFIRE-1 Technical Manual

Johnson Controls NU-NCMFIRE-1 Technical Manual

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