Specifications:
Electrical
Mechanical
Supply Voltage -
Min.
8.5 Volts (Power limited)
Max.
30 Volts (Power limited)
Max.Ripple Voltage:
30% of applied voltage
Max. Standby Current:
30mA (12 detectors on loop)
Max. Alarm Current:
90mA
Alarm Contact Ratings:
0.5 Amp @ 36 V DC, Resistive
Maintenance Contact Ratings:
2 Amp @ 30 V DC, Resistive
Min. Reset Voltage:
6 Volts
Min. Reset Time:
0.3 sec.
Operating Temperature Range:
14°F to 122°F (-10°C to 50 °C)
Operating Humidity Range:
0 to 95% RH non-condensing
Storage Temperature Range:
–4°F to 158°F (–20°C to 70 °C)
Initial Communication Cycle:
2-6 minutes after power-up or panel reset
EZ Walk Test Available:
6 minutes after power-up or panel reset
2-wire compatibility
Min. loop voltage:
10 Volts
Max. loop voltage:
11.5 Volts
Max. loop resistance:
50 ohm
Max. loop ripple:
1 Vpp
Max. Loading Capacitance:
0.01 mF
Max. Alarm current:
40 mA
Max. Reset Voltage:
0.3 V
Alarm Delay:
No
Min. Alarm reset time:
0.3 sec.
Max. normal load current:
1.25 mA
Zone Type:
Standard
EOL Device:
3.9 KΩ (0.25W, 5%)
Loop style:
B, D
Compatibility/Zone identifier:
A
Max. detectors per zone:
Models 2W–B and 2WT–B:
Model 2WTR–B:
Model 2WTA–B:
Three-Year Limited Warranty
System Sensor warrants its enclosed product to be free from defects in
materials and workmanship under normal use and service for a period
of three years from date of manufacture. System Sensor makes no other
express warranty for the enclosed product. No agent, representative,
dealer, or employee of the Company has the authority to increase or alter
the obligations or limitations of this Warranty. The Company's obliga-
tion of this Warranty shall be limited to the replacement of any part of
the product which is found to be defective in materials or workman-
ship under normal use and service during the three year period com-
mencing with the date of manufacture. After phoning System Sensor's
toll free number 800-SENSOR2 (736-7672) for a Return Authorization
number, send defective units postage prepaid to: System Sensor, Returns
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to pro-
vide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.
D500-46-00
Height:
4.5 inches
Width:
4.0 inches
Depth:
1.25 inches
Weight:
0.5 pound
(Includes packaging
materials)
12
1
1
NOTE: When used with the RRS–MOD reversal relay/synchroniza-
tion module and the 2W–MOD2, a maximum of 12 2WTA–B detec-
tors are allowed per zone.
Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174.
Please include a note describing the malfunction and suspected cause
of failure. The Company shall not be obligated to replace units which
are found to be defective because of damage, unreasonable use, modi-
fications, or alterations occurring after the date of manufacture. In no
case shall the Company be liable for any consequential or incidental
damages for breach of this or any other Warranty, expressed or implied
whatsoever, even if the loss or damage is caused by the Company's
negligence or fault. Some states do not allow the exclusion or limita-
tion of incidental or consequential damages, so the above limitation or
exclusion may not apply to you. This Warranty gives you specific legal
rights, and you may also have other rights which vary from state to state.
FCC Statement
4
©2006 System Sensor
INSTALLATION AND MAINTENANCE INSTRUCTIONS
Series
Loop Test/Maintenance Module
Model: 2W-MOD2
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)
Normal
OFF
Loop trouble
OFF
Maintenance/Freeze trouble
ON
Loop trouble and
ON
Maintenance/Freeze trouble
Alarm
OFF
Alarm and loop trouble
OFF
Alarm and Maintenance/Freeze OFF
trouble
Terminal Location
Terminal 7 – N.O.
Terminal 8 – Common
Terminal 9 – N.C.
Figure 2. Module front view:
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.
I56-2174-003
D500-46-00
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:
LED COLOR
ON
Blink 1 sec. ON
GREEN LED
and 1 sec. OFF
OFF
ON
Blink 1 sec. ON
and 1 sec. OFF
RED LED
Alarm relay (form A)
Loop trouble relay (form A)
Open
Close
OFF
Open
Open
Open
Close
ON
Open
Open
Blink 0.5 sec. ON
YELLOW LED
Close
N/A
and 0.5 sec. OFF
Close
N/A
OFF
Close
N/A
The module has loop trouble restoration detection. If the
Relay connected
Relay connected between
between terminals
terminals 10 and 12
loop trouble (open loop) doesn't exist any more, the mod-
10 and 11
ule will restore to standby condition with a maximum delay
S0236-00
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.
Green LED
Red LED
Yellow LED
EZ Walk-Test
If the green LED remains ON (no blinking) three minutes af-
Pushbutton
ter applying power, it means that the module has determined
S0218-00
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 i
on the loop, verify wiring and system operation.
1
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
STATUS
CONDITION
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.
WARNING
3
detectors are installed
I56-2174-003
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