While a fire alarm system may lower insurance rates, it is not a substitute for fire insurance!
An automatic fire alarm system—typically made up of
smoke detectors, heat detectors, manual pull stations, audible
warning devices, and a fire alarm control panel with remote
notification capability—can provide early warning of a developing fire. Such a system, however, does not assure protection
against property damage or loss of life resulting from a fire.
The Manufacturer recommends that smoke and/or heat detectors be located throughout a protected premise following the
recommendations of the National Fire Protection Association
Standard 72 (NFPA 72), manufacturer's recommendations,
State and local codes, and the recommendations contained in
the Guides for Proper Use of System Smoke Detectors, which
are made available at no charge to all installing dealers.
These documents can be found at http://www.systemsensor.com/html/applicat.html. A study by the Federal Emergency Management Agency (an agency of the United States
government) indicated that smoke detectors may not go off in
as many as 35% of all fires. While fire alarm systems are
designed to provide early warning against fire, they do not
guarantee warning or protection against fire. A fire alarm system may not provide timely or adequate warning, or simply
may not function, for a variety of reasons:
Smoke detectors may not sense fire where smoke cannot
reach the detectors such as in chimneys, in or behind walls, on
roofs, or on the other side of closed doors. Smoke detectors
also may not sense a fire on another level or floor of a building.
A second-floor detector, for example, may not sense a firstfloor or basement fire.
Particles of combustion or “smoke” from a developing fire
may not reach the sensing chambers of smoke detectors
because:
• Barriers such as closed or partially closed doors, walls, or
chimneys may inhibit particle or smoke flow.
• Smoke particles may become “cold,” stratify, and not reach
the ceiling or upper walls where detectors are located.
• Smoke particles may be blown away from detectors by air
outlets.
• Smoke particles may be drawn into air returns before
reaching the detector.
The amount of “smoke” present may be insufficient to alarm
smoke detectors. Smoke detectors are designed to alarm at
various levels of smoke density. If such density levels are not
created by a developing fire at the location of detectors, the
detectors will not go into alarm.
Smoke detectors, even when working properly, have sensing
limitations. Detectors that have photoelectronic sensing
chambers tend to detect smoldering fires better than flaming
fires, which have little visible smoke. Detectors that have ionizing-type sensing chambers tend to detect fast-flaming fires
better than smoldering fires. Because fires develop in different
ways and are often unpredictable in their growth, neither type
of detector is necessarily best and a given type of detector
may not provide adequate warning of a fire.
Smoke detectors cannot be expected to provide adequate
warning of fires caused by arson, children playing with
matches (especially in bedrooms), smoking in bed, and violent
explosions (caused by escaping gas, improper storage of
flammable materials, etc.).
Heat detectors do not sense particles of combustion and
alarm only when heat on their sensors increases at a predetermined rate or reaches a predetermined level. Rate-of-rise
heat detectors may be subject to reduced sensitivity over time.
For this reason, the rate-of-rise feature of each detector
should be tested at least once per year by a qualified fire protection specialist. Heat detectors are designed to protect
property, not life.
IMPORTANT! Smoke detectors must be installed in the
same room as the control panel and in rooms used by the system for the connection of alarm transmission wiring, communications, signaling, and/or power. If detectors are not so
located, a developing fire may damage the alarm system, crippling its ability to report a fire.
Audible warning devices such as bells may not alert people
if these devices are located on the other side of closed or
partly open doors or are located on another floor of a building.
Any warning device may fail to alert people with a disability or
those who have recently consumed drugs, alcohol or medication. Please note that:
• Strobes can, under certain circumstances, cause seizures
in people with conditions such as epilepsy.
• Studies have shown that certain people, even when they
hear a fire alarm signal, do not respond or comprehend the
meaning of the signal. It is the property owner's responsibility to conduct fire drills and other training exercise to
make people aware of fire alarm signals and instruct them
on the proper reaction to alarm signals.
• In rare instances, the sounding of a warning device can
cause temporary or permanent hearing loss.
A fire alarm system will not operate without any electrical
power. If AC power fails, the system will operate from standby
batteries only for a specified time and only if the batteries have
been properly maintained and replaced regularly.
Equipment used in the system may not be technically compatible with the control panel. It is essential to use only equipment listed for service with your control panel.
Telephone lines needed to transmit alarm signals from a
premise to a central monitoring station may be out of service
or temporarily disabled. For added protection against telephone line failure, backup radio transmission systems are recommended.
The most common cause of fire alarm malfunction is inadequate maintenance. To keep the entire fire alarm system in
excellent working order, ongoing maintenance is required per
the manufacturer's recommendations, and UL and NFPA standards. At a minimum, the requirements of NFPA 72 shall be
followed. Environments with large amounts of dust, dirt or
high air velocity require more frequent maintenance. A maintenance agreement should be arranged through the local manufacturer's representative. Maintenance should be scheduled
monthly or as required by National and/or local fire codes and
should be performed by authorized professional fire alarm
installers only. Adequate written records of all inspections
should be kept.
Adherence to the following will aid in problem-free installation with long-term reliability:
WARNING - Several different sources of power can be
connected to the fire alarm control panel. Disconnect all
sources of power before servicing. Control unit and associated equipment may be damaged by removing and/or inserting cards, modules, or interconnecting cables while the unit is
energized. Do not attempt to install, service, or operate this
unit until manuals are read and understood.
CAUTION - System Re-acceptance Test after Software
Changes: To ensure proper system operation, this product
must be tested in accordance with NFPA 72 after any programming operation or change in site-specific software. Reacceptance testing is required after any change, addition or
deletion of system components, or after any modification,
repair or adjustment to system hardware or wiring. All components, circuits, system operations, or software functions known
to be affected by a change must be 100% tested. In addition,
to ensure that other operations are not inadvertently affected,
at least 10% of initiating devices that are not directly affected
by the change, up to a maximum of 50 devices, must also be
tested and proper system operation verified.
This system meets NFPA requirements for operation at 0-49º
C/32-120º F and at a relative humidity 93% ± 2% RH (noncondensing) at 32°C ± 2°C (90°F ± 3°F). However, the useful
life of the system's standby batteries and the electronic components may be adversely affected by extreme temperature
ranges and humidity. Therefore, it is recommended that this
system and its peripherals be installed in an environment with
a normal room temperature of 15-27º C/60-80º F.
Verify that wire sizes are adequate for all initiating and indicating device loops. Most devices cannot tolerate more than a
10% I.R. drop from the specified device voltage.
Like all solid state electronic devices, this system may
operate erratically or can be damaged when subjected to lightning induced transients. Although no system is completely
immune from lightning transients and interference, proper
grounding will reduce susceptibility. Overhead or outside aerial
wiring is not recommended, due to an increased susceptibility
to nearby lightning strikes. Consult with the Technical Services Department if any problems are anticipated or encountered.
Disconnect AC power and batteries prior to removing or
inserting circuit boards. Failure to do so can damage circuits.
Remove all electronic assemblies prior to any drilling, filing,
reaming, or punching of the enclosure. When possible, make
all cable entries from the sides or rear. Before making modifications, verify that they will not interfere with battery, transformer, or printed circuit board location.
Do not tighten screw terminals more than 9 in-lbs. Overtightening may damage threads, resulting in reduced terminal
contact pressure and difficulty with screw terminal removal.
This system contains static-sensitive components.
Always ground yourself with a proper wrist strap before handling any circuits so that static charges are removed from the
body. Use static suppressive packaging to protect electronic
assemblies removed from the unit.
Follow the instructions in the installation, operating, and programming manuals. These instructions must be followed to
avoid damage to the control panel and associated equipment.
FACP operation and reliability depend upon proper installation.
Precau-D1-9-2005
FCC Warning
WARNING: This equipment generates, uses, and can
radiate radio frequency energy and if not installed and
used in accordance with the instruction manual may
cause interference to radio communications. It has been
tested and found to comply with the limits for class A
computing devices pursuant to Subpart B of Part 15 of
FCC Rules, which is designed to provide reasonable
protection against such interference when devices are
operated in a commercial environment. Operation of this
equipment in a residential area is likely to cause interference, in which case the user will be required to correct
the interference at his or her own expense.
Canadian Requirements
This digital apparatus does not exceed the Class A limits
for radiation noise emissions from digital apparatus set
out in the Radio Interference Regulations of the Canadian Department of Communications.
Le present appareil numerique n'emet pas de bruits
radioelectriques depassant les limites applicables aux
appareils numeriques de la classe A prescrites dans le
Reglement sur le brouillage radioelectrique edicte par le
ministere des Communications du Canada.
LiteSpeed™ is a trademark; and FireLite® Alarms is a registered trademark of Honeywell International Inc. Microsoft® and Windows® are registered
trademarks of the Microsoft Corporation.
In order to supply the latest features and functionality in fire alarm and life safety technology to our customers, we make
frequent upgrades to the embedded software in our products. To ensure that you are installing and programming the latest
features, we strongly recommend that you download the most current version of software for each product prior to
commissioning any system. Contact Technical Support with any questions about software and the appropriate version for
a specific application.
Documentation Feedback
Your feedback helps us keep our documentation up-to-date and accurate. If you have any comments or suggestions about
our online Help or printed manuals, you can email us.
Please include the following information:
•Product name and version number (if applicable)
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Send email messages to:
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Technical Services.
1.3.1: Available Protocols............................................................................................................................10
1.3.2: Protocol Use ......................................................................................................................................10
1.4.3: Control Modules................................................................................................................................11
1.4.7: Manual Pull Station ...........................................................................................................................12
1.4.8: 300 Series Addressable Devices........................................................................................................12
1.8: LED Operation.............................................................................................................................................13
2.4: Control Panel Terminal Blocks....................................................................................................................18
6.4.5: Short Circuit Protection .....................................................................................................................47
6.4.6: Features Not Supported .....................................................................................................................48
6.4.7: Circuit Board Information .................................................................................................................48
6.5: Wiring a CMF-300-6 Module......................................................................................................................49
6.5.1: Wiring a Style Y NAC (Two-Wire) .................................................................................................49
6.5.2: Wiring a Style Z NAC (Four-Wire)...................................................................................................50
9.2: Installation and Wiring ................................................................................................................................56
9.2.1: Setting the Detector Address .............................................................................................................56
9.2.2: Wiring a Detector Base......................................................................................................................57
9.2.3: Wiring an Isolator Base .....................................................................................................................58
9.2.4: Wiring a Relay Base..........................................................................................................................58
9.2.5: Wiring a Sounder Base......................................................................................................................59
10.2.1: Setting an SLC address....................................................................................................................60
10.2.2: Wiring a Manual Pull Station ..........................................................................................................60
Appendix A: Power Considerations...................................................................................... 61
A.1: Supplying Power to 24 VDC Detectors and NACs ....................................................................................61
A.1.1: Resistance and Size...........................................................................................................................61
C.2: CMF-300 and MMF-302 ............................................................................................................................68
D.3: B224RB Relay Base ...................................................................................................................................72
D.4: B501BH(-2) and B501BHT(-2) Sounder Bases .........................................................................................73
Appendix E: Canadian Versions of SLC Devices ................................................................74
This document describes the operation, installation and wiring of various Signaling Line Circuit
(SLC) devices when used with the Fire-Lite MS-9200/MS-9200E, MS-9600/MS-9600E, MS9600LS/MS-9600LSC/MS-9600LSE, MS-9600UDLS/MS-9600UDLSE, MS-9200UD/MS9200UDE, MS-9200UDLS/MS-9200UDLSE/MS-9200UDLSC, and MS-9050UD/MS9050UDC/MS-9050UDE control panels. It also provides basic information that applies to Fire•Lite
SLC loops in general, such as the branch resistance measurements.
NOTE: Any reference in this manual to the MS-9200, MS-9200UD, MS-9200UDLS, MS-9600,
MS-9600LS, MS-9600UDLS, or MS-9050UD includes the MS-9200E, MS-9200UDE,
MS-9200UDLSE, MS-9200UDLSC, MS-9600E, MS-9600LSE, MS-9600LSC, MS-9600UDLSE,
MS-9050UDC, or MS-9050UDE respectively unless otherwise specified.
Additional information about the specific control panel and the modules and detectors referenced in
this document can be found in the respective installation manual as listed in Table 1.1, “Reference
Documentation,” on page 10.
Currently, there are two styles of modules available, legacy version and newer version. The obvious
difference between the two styles is the orientation of the rotary dials. Refer to the diagram below
for an example of each.
NOTE: Only the MMF-300, MMF-302, CRF-300, CMF-300, and MDF-300 modules are available
as newer type modules. Both the legacy and newer versions share the same part numbers. The
newer version modules will be phased in, replacing the legacy version. This manual contains
information and wiring diagrams for the newer version of the modules. Refer to “Terminal
Conversion Charts for New & Legacy Devices” on page 67 for additional information.
Currently, there are two styles of detector bases available, legacy version and newer version. The
obvious difference between the two styles is the orientation of the screw terminals. Refer to
Section 9 and Appendix D for an illustration of each.
NOTE: Only the B501 Detector Base, B210LP Detector Base (replacement base for B350LP),
B224RB Relay Base, and B224BI Isolator Base are available as newer type bases. Both the
legacy and newer versions share the same part numbers. The newer version bases will be
phased in, replacing the legacy version. This manual contains information and wiring diagrams for
the newer version of the bases. Refer to “Intelligent Detector Base Layouts for Legacy Devices”
on page 71 for additional information.
1.1.1 Reference Documentation
The table below accommodates a list of document sources containing additional information
regarding the devices used on a Signaling Line Circuit:
Communication between the control panel and intelligent addressable monitor and control devices
takes place through a Signaling Line Circuit (SLC), which can be wired to meet the requirements of
NFPA Style 4, Style 6, or Style 7.
At least one secondary surge protector must be used with each SLC wiring pair whenever SLC
wiring runs outside the building. For detailed information refer to “Surge Suppression” on page 64.
1.3 Polling Protocols
The MS-9200UDLS, MS-9600LS, and MS-9600UDLS support LiteSpeed protocol or Classic
Loop Interface Protocol (CLIP). The MS-9200/E, MS-9600/E, MS-9200UD/E, and MS-9050UD
support Classic Loop Interface Protocol (CLIP) only.
1.3.1 Available Protocols
LiteSpeed is a communication protocol that greatly enhances the speed of communication between
analog intelligent devices. Only the MS-9200UDLS, MS-9600LS, and MS-9600UDLS are capable
of operating in LiteSpeed mode. This is the default mode of operation for these FACPs.
CLIP (Classic Loop Interface Protocol) polls devices in sequential order. All Fire-LiteFireWarden
addressable fire alarm control panels can operate in CLIP mode. This is the default mode of
operation for all other FACPs.
1.3.2 Protocol Use
Use one of the following options with LiteSpeed/CLIP mode:
1.Program all modules and detectors on an FACP as LiteSpeed.
2.Program all modules and detectors on an FACP as CLIP.
NOTE: FACPs with more than one SLC loop must be programmed for only LiteSpeed or CLIP
mode of operation. Communication protocols cannot be split between SLC loops.
When switching between polling protocols, the loop circuit must be powered down for at least 30
seconds to reset the devices.
The I300 Isolator Module permits a zone of detectors and modules to be fault isolated from the
remainder of the SLC loop, allowing critical components to function in the event of a circuit fault.
Isolator modules are required to meet the requirements of an NFPA Style 7 circuit.
1.4.2 Monitor Modules
Addressable modules that allow the control panel to monitor entire circuits of conventional alarm
initiating devices, such as manual pull stations, smoke detectors, heat detectors, waterflow and
supervisory devices.
MMF-300 - Monitors a Style B (Class B) or Style D (Class A) circuit of dry-contact input devises.
MMF-300-10 - Monitors ten (10) Style B (Class B) or five (5) Style D (Class A) normally open
contact device circuits.
MMF-301 - Same as the MMF-300 except offered in a smaller package for mounting with Style B
wired devices. This module does not have an LED.
MMF-302 - Monitors a single IDC of two-wire smoke detectors.
MMF-302-6 - An addressable module that provides an interface between the control panel and six
(6) Style B (Class B) or three (3) Style D (Class A) IDCs of two-wire smoke detectors.
MDF-300 - Similar to MMF-300, but provides for two independent Style B IDCs.
1.4.3 Control Modules
Through the CMF-300 addressable control module, the control panel can selectively activate a
Notification Appliance Circuit (NAC).
CMF-300-6 - Similar in operation to the CMF-300, except it can activate six (6) Style Y (Class B)
or three (3) Style Z (Class A) NACs.
1.4.4 Relay Modules
The CRF-300 addressable relay module provides the control panel with a dry-contact output for
activating a variety of auxiliary devices.
CRF-300-6 - Similar in operation to the CRF-300, except it provides six (6) Form-C relays.
1.4.5 Multiple Input/Output Modules
The CDRM-300 addressable multiple input/output module monitors two (2) Style B input devices
and provides two (2) independent Form-C relay contacts.
1.4.6 Intelligent Detectors
AD350 - A multicriteria smoke sensor that combines a photoelectric sensing chamber and 135°F
(57.2°C) fixed temperature heat detection. The sensor uses addressable communication to transmit
smoke density and other information to the control panel. It adjusts its detection parameters and
alarm threshold depending on the ambient conditions it samples in its environment.
AD355 - A multicriteria smoke sensor that combines a photoelectric sensing chamber and 135°F
(57.2°C) fixed temperature heat detection. The sensor uses addressable communication to transmit
smoke density and other information to the control panel. It adjusts its detection parameters and
alarm threshold depending on the ambient conditions it samples in its environment.
CP350 - An addressable ionization smoke detector which measures the level of combustion
products in its chamber using the ‘ionization principle’.
CP355 - An addressable ionization smoke detector which measures the level of combustion
products in its chamber using the ‘ionization principle’.
D350P - An addressable photoelectric duct detector. The D350RP includes an alarm relay. Air
velocity rating is 500 to 4,000 feet per minute.
D350PL -An addressable low flow photoelectric duct detector (D350PLA for Canada). The
D350RPL includes an alarm relay (D350RPLA for Canada). Low Flow refers to the air velocity
rating of 100 to 4,000 feet per minute (0.5 to 20.32 m/sec).
D355PL - An addressable non-relay photoelectric low flow smoke detector. Low Flow refers to
the air velocity rating of 100 to 4,000 feet per minute (0.5 to 20.32 m/sec).
1
H350
- An addressable detector using a thermistor sensing circuit for fast response. H350R
incorporates a thermal rate of rise of 15°F (9.4°C)/minute.
1
H355
- An addressable 135° fixed temperature heat detector using a thermistor sensing circuit for
fast response. H355R incorporates a thermal rate of rise of 15° F (9.4° C)/minute.
H355HT
1
- An addressable 190° fixed temperature heat detector using a thermistor sensing circuit
for fast response.
SD350 - An addressable photoelectric smoke detector which provides smoke sensing utilizing
optical sense technology. The SD350T includes a 135° F fixed thermal sensor.
SD355 - An addressable photoelectric smoke detector which provides smoke sensing utilizing
optical sense technology. The SD355T includes a 135° F fixed thermal sensor. The SD355R is a
low profile, intelligent, photoelectric sensor that is remote test capable.
BEAM355 - An addressable long range projected beam smoke detector designed to provide open
area protection. The BEAM355S has an integral sensitivity test feature that consists of a test filter
attached to a servomotor inside the detector optics.
DNR(W) - Innovair Flex, intelligent, non-relay, low flow, photoelectric duct detector housing.
This requires the SD355R photoelectric smoke detector. Accomodates the installation of the CRF300 relay module. The DNRW is a watertight housing.
1.4.7 Manual Pull Station
The BG-12LX is a dual-action pull station that, when activated, provides an addressable
identification and its location to the control panel. An addressable monitor module is mounted
inside the pull station to facilitate servicing and replacement.
1.4.8 300 Series Addressable Devices
Fire•Lite’s 300 Series of addressable devices are fully compatible with the MS-9200, MS-9200UD,
MS-9200UDLS, MS-9600, MS-9600LS(C/E), MS-9600UDLS/E, and MS-9050UD FACPs. The
devices must be configured for CLIP (Classic Loop Interface Protocol) Mode operation. The
address of 300 series devices cannot be set above 99. Compatible devices include:
• SD300 Photo• M300 Monitor Module
• SD300T Photo w/Thermal• M301 Mini Monitor Module
• CP300 Ionization• M302 2-wire Monitor Module
• BG-10LX Pull Station• C304 Control/Relay Module
1.5 SLC Capacity
The protocol selected for an SLC loop determines the maximum number of devices that can be
handled by the loop. See Section 1.3, “Polling Protocols”, on page 10. Within those limits, the
individual control panel may have additional restrictions. See the specific installation manual for
this information.
1. Addressable Heat Detectors are not compatible with the MS-9200(E).
SLC performance depends on the type of circuit (Style 4, Style 6, or Style 7) and the components
on the circuit.
NOTE: SLC operation meeting Style 7 requirements isolates each device on the SLC from faults
that may occur within other areas of the SLC.
Wiring style requirements are determined by national and local codes. Consult with the Authority
Having Jurisdiction before wiring the SLC. The table below (derived from NFPA 72-1999) lists
the trouble conditions that result when a fault exists on an SLC.
Type of FaultStyle 4 Style 6Style 7
Single OpenTroubleAlarm, TroubleAlarm, Trouble
Single Ground Alarm, Trouble (ground)Alarm, Trouble (ground)Alarm, Trouble (ground)
Short TroubleTroubleAlarm, Trouble
Short and openTroubleTroubleTrouble
Short and groundTroubleTroubleAlarm, Trouble
Open and groundTroubleAlarm, TroubleAlarm, Trouble
Communications lossTroubleTroubleTrouble
• Trouble - The control panel will indicate a trouble condition for this type of fault.
• Alarm - The control panel must be able to process an alarm input signal in the presence of this type of fault.
1.7 Surge Suppression
One primary surge protector must be used with each SLC wiring pair whenever SLC wiring runs
outside the building. For detailed information refer to “Surge Suppression” on page 64.
1.8 LED Operation
The table below lists the LED operation on the various devices on an SLC.
The SLC requires use of a specific wire type, depending on the mode of operation, to ensure proper
circuit functioning. Wire size should be no smaller than 18 AWG (0.75 mm
AWG (3. 2 5 mm
2
) wire. The wire size depends on the length of the SLC circuit. It is recommended
2
) and no larger than 12
that all SLC wiring be twisted-pair to minimize the effects of electrical interference.
2.1.1 CLIP (Classic Loop Interface Protocol) Mode
All addressable FACPs can operate in CLIP (Classic Loop Interface Protocol) mode. It is
recommended that all SLC wiring be twisted-pair and shielded when operating in CLIP mode to reduce
the effects of electrical interference. Use the table below to determine the specific wiring requirements
for the SLC.
Wire RequirementsDistance in Feet (meters)Wire SizeWire Type
2
)Belden 9583, Genesis 4410,
Signal 98230, WPW D999
2
)Belden 9581, Genesis 4408,
Signal 98430, WPW D995
2
)Belden 9575, Genesis 4406, &
4606, Signal 98630, WPW
D991
2
)Belden 9574, Genesis 4402 &
4602, Signal 98300, WPW
D975
Twisted-pair, shielded
10,000 feet (3,048 m)12 AWG (3.1 mm
8,000 feet (2,438 m)14 AWG (2.0 mm
4,875 feet (1,486 m)16 AWG (1.3 mm
3,225 feet (983 m)18 AWG (0.75 mm
MS-9200 = 1,000 feet (305 m)
Untwisted, unshielded
wire, inside conduit or
not in conduit
2.1.2 LiteSpeed Mode
Wire RequirementsDistance in Feet (meters)Wire SizeWire Type
Twisted-pair,
unshielded
MS-9600, MS-9600LS(C) &
MS-9600UDLS = 3,000 feet (914 m)
MS-9200UD & MS-9200UDLS = 3,000 feet (914
m)
MS-9050UD = 3,000 feet (914 m)
12 to 18 AWG
Table 2.1 SLC Wiring Requirements in CLIP Mode
The MS-9200UDLS, MS-9600LS, and MS-9600UDLS SLC can be programmed to operate in
LiteSpeed mode for a quicker device response time. While shielded wire is not required, it is
recommended that all SLC wiring be twisted-pair to minimize the effects of electrical interference.
Use the following table to determine the specific wiring requirements for the SLC.
10,000 feet (3,048 m)12 AWG (3.1 mm
8,000 feet (2,438 m)14 AWG (2.0 mm
4,875 feet (1,486 m)16 AWG (1.3 mm
3,225 feet (983 m)18 AWG (0.75 mm
2
)Belden 5020UL & 6020UL,
Genesis WG-4315 & WG-4515
2
)Belden 5120UL & 6120UL,
Genesis WG-4313 & WG-4513
2
)Belden 5220UL & 6220UL,
Genesis WG-4311 & WG-4511
2
)Belden 5320UL & 6320UL,
Genesis WG-4306 & WG-4506
Table 2.2 SLC Wiring Requirements in LiteSpeed Mode
Figure 2.1 Measuring DC Resistance of a Two-Wire SLC
Branch A Branch B
Branch C
SLC-meas2.wmf
SLC Terminal
Block
Figure 2.2 Measuring the Total Wire Length - Two-Wire SLC
2.2 Measuring Resistance & Length
2.2.1 Two-Wire SLC - Style 4 (Class B)
Loop Resistance
T-tapping of the SLC wiring is permitted for 2-wire Style 4 configurations. The total DC resistance
from the control panel to each branch end cannot exceed 40 ohms. Measure DC resistance as
detailed and shown below:
1.With power removed, short the termination point of one branch at a time and measure the DC
resistance from the beginning of the SLC to the end of that particular branch.
2.Repeat this procedure for all remaining branches in the SLC.
Total Wire Length
The total wire length of all combined branches of one SLC cannot exceed the limits set forth in
each system’s instruction manual. Determine the total length in each SLC by summing the wire
lengths of all branches of one SLC.
In the following figure, the total length of the SLC is determined by adding the lengths of Branch A
plus Branch B plus Branch C.
Figure 2.3 Measuring DC Resistance of a Four-Wire SLC
B+ B– A– A+
SLC-meas4.wmf
SLC channel B
(output loop)
SLC channel A
(return loop)
SLC Terminal
Block
Figure 2.4 Measuring the Wire Length – Four-Wire SLC
2.2.2 Four-Wire SLC Style 6 & 7 (Class A)
Loop Resistance
The total DC resistance of the SLC pair cannot exceed 40 ohms. Measure DC resistance as detailed
and shown below.
1.Disconnect the SLC channel B (Out) and SLC channel A (Return) at the control panel.
2.Short the two leads of SLC channel A (Return).
3.Measure the resistance across the SLC channel B (Out) leads.
Total Wire Length
The total wire length in a four-wire SLC cannot exceed the limits set forth in each system’s
instruction manual. The figure below identifies the output and return loops from SLC terminal on
the control panel:
The drawing below shows the method of proper termination of the shield.
Connect the metal conduit to the cabinet by using the proper connector. Feed the shielded wire
through the conduit, into the control box. The shield drain wire must be connected to the “shield”
terminal on the SLC terminal block.
NOTE: Use of good wiring practice consistent with local electrical codes is expected.
CAUTION:DO NOT LET THE SHIELD DRAIN WIRE OR THE SHIELD FOIL TOUCH THE
SYSTEM CABINET OR BE CONNECTED TO EARTH GROUND AT ANY POINT.
The terminal blocks on the control panel circuit board that concern the SLC circuit are described
below. For more information on this subject refer to the control panel’s Instruction Manual.
2.4.1 MS-9200
TB4 provides three types of 24 VDC power; Unregulated, Nonresettable and Resettable.
TB6 provides connections for the SLC wiring.
198 addresses are available per loop (99 detectors and 99 modules).
2.4.2 MS-9600, MS-9600LS, & MS-9600UDLS
TB3 provides two types of 24 VDC power; Nonresettable and Resettable.
TB8 provides connections for the SLC wiring.
198 addresses are available per loop (99 detectors and 99 modules) while operating in CLIP mode.
318 addresses are available per loop (159 detectors and 159 modules) while operating in LiteSpeed
mode.
There are two isolator devices used to protect critical elements of the SLC from faults on other SLC
branches or segments.
•Fault Isolator Module I300
•Isolator Detector Base B224BI
A Fault Isolator Module on both sides of a device, or the combination of Isolator Base and Isolator
Module is required to comply with NFPA Style 7 requirements.
CAUTION:MAXIMUM ADRESSABLE DEVICES
• If relay or sounder bases are not used, a maximum of 25 addressable devices can be
connected between Isolator Modules and/or Bases. When relay or sounder bases are used,
the maximum number of addressable devices that can be connected between Isolators is
reduced to seven. Isolator modules will not function properly when these limits are exceeded.
• When more than 100 Isolator Modules are connected to an SLC loop, the address capacity
of the loop is reduced by two (2) addresses for every isolator device in excess of 100.
4.1.1 Isolating an SLC Branch
The module continuously monitors the circuit connected to terminals 3(–) and 4(+). Upon powerup, an integral relay is latched on. The module periodically pulses the coil of this relay. A short circuit on the SLC resets the relay. The module detects the short and disconnects the faulted SLC
branch or segment by opening the positive side of the SLC (terminal 4). This isolates the faulty
branch from the remainder of the loop preventing a communication problem with all other addressable devices on the remaining branches (labeled “Continuation of the SLC” in the figure below).
During a fault condition, the control panel registers a trouble condition for each addressable device
which is isolated on the SLC segment or branch. Once the fault is removed, the module automatically reapplies power to the SLC branch or segment.
4.1.2 Wiring an Isolator Module
The figure below shows typical wiring of an Isolator Module:
SLC Circuits with IsolatorsNFPA Style 4 SLC Using Isolator Modules
Figure 4.2 NFPA Style 4 SLC Using Isolator Modules
Two-wire Addressable Detector
Addressable Pull Station
SLC-style4iso.wmf
Control Panel
SLC
B– B+
Isolated Branch
Isolator Module
Isolator Module
Isolator Module
Isolated Branch
Isolated Branch
4.2 NFPA Style 4 SLC Using Isolator Modules
A variation of a Style 4 operation using isolator modules to protect each branch of the SLC is
shown below. Refer to Figure 4.1 for I300 wiring and to Section 4.1 for limitations.