System Sensor 2W-MOD2 Bedienungsanleitung

System Sensor Detektor 2W-MOD2

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NOTE: If two–wire i3 detectors are used in conjunction

with a style D initiating circuit, the 2W–MOD2 must be

used to provide that capability. Ground fault on a mod-

ule’s two-wire loop can be indicated at a control panel if

the control panel is capable of ground fault detection on

the power supply to the module and meets NFPA 72 ground

fault indication requirements for initiating device circuits.

The installer must verify that capability.

Figure 3. Module LED modes:

Power on. Detectors

on loop do not have

communication capability.

Power on. One or more

detectors on loop have

communication capability.

Power not applied or

module not operating

properly.

Detector on loop in alarm.

One or more detectors

out of sensitivity or in

Freeze Trouble.

Detectors on loop not

in alarm, maintenance

or Freeze Trouble.

Loop wiring fault.

EZ Walk Test mode.

Loop wiring normal.

Blink 1 sec. ON

and 1 sec. OFF

OFF

Blink 1 sec. ON

and 1 sec. OFF

OFF

Blink 0.5 sec. ON

and 0.5 sec. OFF

OFF

GREEN LED

RED LED

YELLOW LED

LED COLOR S TUSTA CONDITION

The module has loop trouble restoration detection. If the

loop trouble (open loop) doesn’t exist any more, the mod-

ule will restore to standby condition with a maximum delay

of 1 minute. There is no delay in loop trouble detection.

If an alarm occurs while the module is indicating mainte-

nance, the alarm will supercede maintenance.

WARNING

If the green LED remains ON (no blinking) three minutes af-

ter applying power, it means that the module has determined

that no detector on its loop has communication capability.

In this condition, the detectors are still capable of initiating

alarm and loop trouble at the module. However, maintenance

and freeze trouble, will not be indicated at the module, and

EZ walk test will not be available. If i3 detectors are installed

on the loop, verify wiring and system operation.

Before Installing

This information is included as a quick reference installa-

tion guide. Refer to the control panel installation manual

for detailed system information. If the modules will be in-

stalled in an existing operational system, inform the opera-

tor and local authority that the system will be temporarily

out of service. Disconnect power to the control panel before

installing the modules.

NOTICE: This manual shall be left with the owner/user of

this equipment.

General Description

The 2W-MOD2 allows a control panel to receive a “need for

maintenance” signal from two–wire i3 series smoke detec-

tors, model numbers 2W–B, 2WT–B, 2WTA–B, and 2WTR–B.

The module uses a form C zone relay to initiate “out of sen-

sitivity” and “freeze trouble”, a form A zone alarm relay and

a second form A zone relay to indicate loop fault (see Figure

1). An EZ Walk Test puts all detectors on the loop into a Walk

Test mode for easy veriﬁcation of detector loop wiring.

Figure 1:

Condition Maintenance relay (form C) Alarm relay (form A) Loop trouble relay (form A)

Normal OFF Open Close

Loop trouble OFF Open Open

Maintenance/Freeze trouble ON Open Close

Loop trouble and ON Open Open

Maintenance/Freeze trouble

Alarm OFF Close N/A

Alarm and loop trouble OFF Close N/A

Alarm and Maintenance/Freeze OFF Close N/A

trouble

Terminal Location rminal 7 – N.O. Relay connected Relay connected betweenTe

Terminal 8 – Common between terminals terminals 10 and 12

Terminal 9 – N.C. 10 and 11

S0236-00

Figure 2. Module front view:

Green LED

Red LED

Yellow LED

EZ Walk-Test

Pushbutton

S0218-00

Three LED’s on the module provide a local visual indica-

tion of the module status(es).

The maintenance module allows two-wire smoke detectors to

be used on any electrically compatible four-wire control panel.

D500-46-00 1 I56-2174-004

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: 630-377-6495

www.systemsensor.com

Loop Test/Maintenance Module

Model: 2W-MOD2

Series

I56-2174-004

Wiring Diagram

Install module wiring in accordance with appropriate wir-

ing diagrams (Figures 5 - 7). Reset is performed through

power inputs 1 and 2.

Figure 5. The Module Wiring: maintenance signal is

sent to a separate zone.

Control Panel

2W-MOD2

Aux. or

Smoke

Power

Fire Zone

Trouble Zone

Panel EOL

6Loop Style D wiring

3.9 K EOL (must not be�

used for Style D)

A2143-10

–

Two-wire listed smoke

detectors. Do not mix

models on the same loop.

Only one 2WTR–B per loop.

Only one 2WTA–B per loop,

unless used with the RRS–MOD.

ALL CIRCUITS ARE SUPERVISED

AND MUST BE POWER LIMITED.

S0232-01

Figure 6. The Module Wiring: maintenance signal is

indicated at the panel as a fire trouble.

Control Panel

2W-MOD2

Aux. or

Smoke

Power

Fire Zone

Panel EOL

–

Loop Style D wiring

ALL CIRCUITS ARE SUPERVISED

AND MUST BE POWER LIMITED.

Two-wire listed smoke

detectors. Do not mix

models on the same loop.

Only one 2WTR–B per loop.

Only one 2WTA–B per loop,

unless used with the RRS–MOD.

3.9 K EOL (must not be�

used for Style D)

A2143-10

–

S0233-01

Figure 7. The Module Wiring: two-wire detectors to

four-wire panel conversion.

Control Panel

2W-MOD2

Aux. or

Smoke

Power

Fire Zone

–

Panel EOL

Loop Style D wiring

3.9 K EOL (must not be�

used for Style D)

A2143-10

–

Two-wire listed smoke

detectors. Do not mix

models on the same loop.

Only one 2WTR–B per loop.

Only one 2WTA–B per loop,

unless used with the RRS–MOD.

ALL CIRCUITS ARE SUPERVISED

AND MUST BE POWER LIMITED.

S0234-01

For NFPA loop Style D wiring the EOL resistor is provided

internal to the module. An external EOL resistor must

not be connected at the last detector on the loop (see Fig-

ures 5 – 7).

Compatibility Requirements

The 2W-MOD2 is marked with a compatibility/zone identi-

ﬁer as the last digit of a 5 digit code on the back of the unit.

To ensure proper operation, this module shall be connected

to compatible two-wire smoke detectors or the alarm con-

tacts of four–wire i3 series detectors only. (Consult System

Sensor’s 2-wire compatibility guide).

Figure 4. Mounting module

Mounting

Install in a dry indoor location. The 2W-MOD2 Mainte-

nance Module mounts directly to 4 inch square electrical

boxes (supplied by installer). The box must have a mini-

mum depth of 2 1/ inches. Secure module to box as shown 8

in Figure 4.

D500-46-00 2 I56-2174-004

S0235-00

S0237-00

S0238-00

able to detect alarm and wiring fault from the 2-wire loop.

NOTE: If an alarm occurs on the 2W-MOD2 zone before

the 2W–MOD2 has completed its power–up sequence, the

module’s green LED will remain on. To reset this condition,

the system must be reset and the module must be allowed

to complete its power–up sequence.

CAUTION

When using the RRS-MOD with model 2WTA-B, do not mix

the 2WTA-B with other model smoke detectors and dry con-

tact closure devices, including mechanical heat detectors,

manual pull stations and waterﬂow switches. Such mixing

can cause a direct short on the auxiliary power terminals,

damaging the control panel’s internal circuitry and/or dam-

age devices connected to the initiating device circuit.

EZ Walk Test

The 2W-MOD2 has a push button for EZ Walk Test mode

(see Figure 2.). The EZ Walk Test feature is available 6 min-

utes after power-up or panel reset. If the push button is

pressed momentarily the module will activate EZ Walk Test

for ﬁve minutes. All detectors on the loop should enter EZ

Walk Test mode. See i3 detector manual for detector re-

sponse in EZ Walk Test mode.

NOTE: EZ Walk Test cannot be initiated if the Green LED

is not blinking.

If the 2W-MOD2 is in normal condition (Green LED blink-

ing) and pressing the push button does not initiate EZ Walk

Test, wait one minute and try again.

At the end of the ﬁve minute period, the module will ter-

minate EZ Walk Test and the yellow LED will stop blink-

ing. The EZ Walk Test period can be extended by pressing

the push button a multiple number of times. For example,

pressing the push button N times will result in a Walk Test

duration of 5*N minutes.

If an alarm occurs during EZ Walk Test, the alarm condition

will supercede EZ Walk Test (alarm is the highest priority).

WARNING

The EZ Walk Test shall not be used in lieu of functional test-

ing (alarm, trouble and other functional tests) of the system.

If a module or detector fails the test, its wiring should be

checked. If the module still fails, it should be replaced.

Notify the proper authorities when the system is back

in service.

D500-46-00 3 I56-2174-004

Wiring Installation Guidelines

All wiring must be installed in compliance with the Na-

tional Electrical Code, applicable state and local codes, and

any special requirements of the local authority having ju-

risdiction (AHJ).

Proper wire gauges should be used. The conductors used

to connect the module to the alarm control panel, smoke

detectors and accessory devices should be color-coded to

reduce the likelihood of wiring errors. Improper connec-

tions can prevent a system from responding properly in the

event of a ﬁre.

The screw terminals in the mounting base will accept 14-24

gauge wire. For best system performance, all wiring should

be installed in separate grounded conduit; do not mix ﬁre

alarm system wiring in the same conduit as any other elec-

trical wiring. Twisted pair may be used to provide addi-

tional protection against extraneous electrical interference.

Wire connections are made by stripping about 1/4 inch of

insulation from the end of the feed wire, inserting it into

the proper terminal, and tightening the screw to secure the

wire in place.

Installation

WARNING

Remove power from alarm control unit or initiating device

circuits before installing modules.

After all modules have been installed, notify the proper au-

thorities that the system is in operation.

Testing

NOTE: Before testing, notify the proper authorities that

maintenance is being performed and the system will be

temporarily out of service. Disable the zone or system un-

dergoing maintenance to prevent any unwanted alarms.

Modules must be tested after installation and following pe-

riodic maintenance. Testing should be performed at least

once a year.

Timing at Power-Up or Reset

Two minutes after power-up, the module will check for

communication, high maintenance, low maintenance, and

freeze trouble with each communication spaced 1 minute

apart. If a valid response to the communication check is

received, the module will check for freeze trouble every

4 hours, low and high maintenance every 24 hours, and

will recheck communication every 24 hours. Whenever the

module fails to receive a valid response to the communica-

tion checks, it will verify the result with another commu-

nication check one minute later. If it still fails to receive a

valid response, the module will cease to communicate until

a valid reset from the panel. In this mode, the module is still

Produktspezifikationen

Marke:	System Sensor
Kategorie:	Detektor
Modell:	2W-MOD2

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