INSTALLATION AND MAINTENANCE INSTRUCTIONS
CAUTION
I56-0983-015R
MDL Module
For use with the following series models:
P2RX, P2WX, P4RX, P4WX, SRX, SWX, SCRX, SCWX, HRX, HWX, CHX, CHRX, CHWX, CHSRX, CHSWX,
PC2RX, PC2WX, PC4RX, PC4WX, H12/24X, HC12/24X, PA400X, S1224MCX, SC24XX, P1224MCX, PC24XX,
SP2C24XX, SP2R1224MCX, SP2W1224MCX, CH24MCX, MHR(A), MHW(A), MHRZA, MHWZA
Refer to System Sensor product installation manuals for model specifications.
U.S. Patent Nos. 5,850,178 and 5,598,139
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
Specifications
Input Voltage Range: DC or Full Wave Rectified
9 to 33 Volts
When MDL module is used, supply voltage range at 12 volts: 9 to 17.5 VDC; at 24
volts: 17 to 33 VDC
Maximum Load on Loop: 3 A
Current:
Voltage
Average Peak In-rush
DC FWR DC FWR DC FWR
12 V 10mA 12mA 30mA 31mA 87mA 122mA
24 V 12mA 15mA 35mA 37mA 198mA 262mA
Operating Temperature: 0°C to 49°C (32°F to 120°F)
Listings: UL S4011, S5512
Note for Strobes – Do not exceed: 1) 9-17.5 or 17-33 voltage range limits when the MDL module is used; 2) Maximum
number of strobe lights and/or maximum line impedance specified in the strobe product installation manual; and 3) Maxuimum line impedence as required by the fire alarm control manufacturer.
General Description
The MDL Module is designed to work with the SpectrAlert
series of notification appliances to provide a means of
synchronizing the temporal-coded horns and chimes, synchronizing the one-second flash timing of the strobe, and
silencing the horns and chimes of the horn/strobe and
chime/strobes combination over a two-wire circuit while
leaving the strobes active.
NOTICE: This manual shall be left with the owner/user of
this equipment.
Module Configuration
Each MDL module has the capability of connecting two
Style Y (Class B) circuits or one Style Z (Class A) circuit.
The zone output(s) from the panel are connected to the zone
input(s) of the MDL module and the zone output(s) from
the MDL module are connected to the notification loop(s).
Supervision is accomplished in the module by a direct connection between the zone input and the zone output of each
of the two zone circuits connected to the normal end-of-line
device. The FACP “sees” the EOL device through the MDL
module. When either or both outputs from the module are
wired to the SpectrAlert products, the horns or chimes and
strobes in both zones will be synchronized.
The MDL module can be configured so that more than two
zones can be synchronized by the interconnection of the
slave input and output (see Figures 1 and 2).
Zone 1 Input: This input powers the MDL module. This
input must have voltage present from the FACP
before anything will work. This also supplies
voltage to Zone 1 output.
Zone 2 Input: This input only supplies voltage to Zone 2
output. Note: If Zone 1 input is not powered,
the notification devices attached to the Zone 2
output will not be powered.
Horn Control: This input enables the horns on the SpectrAlert
notification appliances. Voltage present means
horns are enabled. No voltage present means
horns are disabled.
Slave In: Connects to Master MDL Module slave out.
Slave Out: Connects to Slave MDL slave in.
D900-14-00 1 I56-0983-015R
TEMP. JUMPER OFF
NAC2
NAC1
FACP
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
ZONE 2
OUT
SYNC
ERROR
SLAVE
OUT
SEPARATE
MONITORING
INPUT
EOL
TO NEXT
SPECTRALERT
DEVICE OR
EOL
NAC3
NAC2
MASTER MODULE
SLAVE MODULE
NAC1
TO NEXT
SPECTRALERT
DEVICE OR
EOL
All SpectrAlert horns,
horn/strobes, and strobes
will operate in sync.
NAC2
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORNS SILENCED OVER TWO WIRE CIRCUIT
MASTER MODULE HORN CONTROL CONNECTS
TO INTERRUPTABLE POWER SOURCE
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
ZONE 2
OUT
SYNC
ERROR
SLAVE
OUT
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
TEMP JUMPER OFF
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
ZONE 2
OUT
SYNC
ERROR
SLAVE
OUT
TEMP JUMPER OFF
FACP #1
FACP #2
TO NEXT
SPECTRALERT
DEVICE OR
EOL
TO NEXT
SPECTRALERT
DEVICE OR
EOL
NAC1
(+)
(–)
EOL
Synchronize SpectrAlert Horns, Chimes and Strobes
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
• Each module can power two 3-amp circuits wired in
class B or one 3-amp circuit powered as Class A.
• Each module will synchronize 2 zones.
• Additional modules can be added and may be synchronized to all other modules by interconnecting the
“slave” input and output terminals between modules.
Horn control wiring must be contained within common enclosure of module.
Slave Out – Slave In wiring must be contained within either
the common enclosure of modules or enclosures within 20
feet of each other with wiring inside conduit.
If Zone 1 input is not powered or fails during alarm, the
notification devices attached to the Zone 2 output will not
be powered.
Controlling Sounder On/Off Over 2-Wires Using Module Horn Control
• Connect the current source to the horn or chime control
input. If a zone output is used for the source, you must
use an EOL on the horn control input terminal.
• When multiple modules are used, the horn or chime
control circuits can be wired in parallel. If wired in parallel and a zone output is used from panel, use an EOL
on the last module for supervision.
Horn/chime control wiring must be contained within common enclosure of module.
Slave Out – Slave In wiring must be contained within either
the common enclosure of modules or enclosures within 20
feet of each other with wiring inside conduit.
If Zone 1 input is not powered or fails during alarm, the
notification devices attached to the Zone 2 output will not
be powered.
Special Considerations
A latching relay contact is provided in case the synchronizing signal to the notification devices is interrupted. The
output can be wired so that a trouble signal will be annunciated at the panel. If the synchronization pulse fails in the
MDL module, the strobes will shut off.
D900-14-00 2 I56-0983-015R
Figure 1: Single MDL Using Sync Error (for panels
with the capability to check for sync error)
NOTE: If zone 1 output of module is connected to strobes,
chime/strobes or horn/strobes, zone 1 input supply power
must be continuous for proper operation.
A0262-00
Figure 2:
NOTE: If zone 1 output of module is connected to strobes,
chime/strobes or horn/strobes, zone 1 input supply power
must be continuous for proper operation.
A0182-00
HORN
POWER
STROBE
POWER
MULTI CODE
SOURCE
ANY SPECTRALERT
HORN STROBE
TO NEXT
HORN POWER
OR EOL
SPECTRALERT
HORN ONLY
}
TO NEXT
DEVICE
OR EOL
}
MDL
HC
Z1
IN OUT
CAUTION
Horns will be Temporal
coded and in sync.
TEMP. JUMPER ON
TO NEXT
DEVICE OR
EOL
TO NEXT
DEVICE OR
EOL
NAC2
NAC1
FACP
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
ZONE 2
OUT
SYNC
ERROR
SLAVE
OUT
MA12/24D
OR PA400
HORN
ONLY
MA12/24D
OR PA400
HORN
ONLY
NOTE: The MDL Module is factory set with the sync error
MASTER MODULE
SLAVE MODULE
TO NEXT
DEVICE OR
EOL
TO NEXT
DEVICE OR
EOL
All SpectrAlert horns,
horn/strobes, and strobe
only devices will
operate in sync.
NOTE: The panel (or FACP) must be capable of providing Style Z (Class A)
notification (or NAC) circuitry. Consult with panel manufacturer.
NAC2
NAC1
FACP
NAC3 OUT
NAC4 RETURN
TO NEXT
DEVICE OR
EOL
TO NEXT
DEVICE OR
EOL
STYLE Z
(CLASS A)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
2 STYLE Y (CLASS B)
1 STYLE Z (CLASS A)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
Temp. Jumper Off
ZONE 2
OUT
SYNC
ERROR
SLAVE
OUT
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
ZONE 2
OUT
SLAVE
OUT
Temp. Jumper Off
SYNC
ERROR
TEMP. JUMPER OFF
NAC2
NAC1
FACP
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
ZONE 2
OUT
SYNC
ERROR
SLAVE
OUT
SEPARATE
MONITORING
INPUT
TEMP. JUMPER OFF
NAC4
NAC3
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
(+)
(–)
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
IN
SLAVE
IN
ZONE 2
OUT
SYNC
ERROR
SLAVE
OUT
MODULE 1
MODULE 2
EOL
contacts in the open state. These contacts may close during
shipping. Approximately two seconds after power-up, these
contacts will open.
NOTE: This contact could be wired to a separate monitoring input at FACP.
Figure 3:
NOTE: If zone 1 output of module is connected to strobes,
chime/strobes or horn/strobes, zone 1 input supply power
must be continuous for proper operation.
Figure 5: Wiring for Coded Supplies
A0265-00
NOTE: Horn/chime control must be powered for horn/
strobes to operate the horn portion.
NOTE: SpectrAlert horn-only/chime-only and horn/strobe
or chime/strobe devices must be set non-temporal for
multi-code sourcing.
Temporal Coding on horns that produce a continuous
tone (Non-SpectrAlert Horns)
See Figure 6
• Program module to provide temporal coding by inserting
jumper plug per instructions.
• Connect only sounders producing a continuous tone to
the module zone output(s).
Figure 4: Multiple Devices Using Sync Error
NOTE: If zone 1 output of module is connected to strobes,
chime/strobes or horn/strobes, zone 1 input supply power
must be continuous for proper operation.
D900-14-00 3 I56-0983-015R
A0181-00
A0263-00
Strobes cannot be used on a module providing temporal coding
to horns. Strobes must be wired for independent operation.
NOTE: Temporal jumper should be inserted across both
pins only on non-SpectrAlert products that are to be powered for temporal sound output.
Figure 6:
NOTE: If zone 1 output of module is connected to strobes or
horn/strobes, or chime/strobes zone 1 input supply power
must be continuous for proper operation.
A0186-00
WARNING
A
A
Figure 6: Mounting Diagram
1. Complete field wiring.
2. Mount unit to 411/16˝ backbox with screws A.
Please refer to insert for the Limitations of Fire Alarm Systems
A0266-00
The Limitations of Sounder/Strobes
The sounder and/or strobe will not work without power. The sounder/strobe
gets its power from the fire/security panel monitoring the alarm system. If power
is cut off for any reason, the sounder/strobe will not provide the desired audio or
visual warning.
The sounder may not be heard. The loudness of the sounder meets (or exceeds)
current Underwriters Laboratories’ standards. However, the sounder may not alert
a sound sleeper or one who has recently used drugs or has been drinking alcoholic
beverages. The sounder may not be heard if it is placed on a different floor from the
person in hazard or if placed too far away to be heard over the ambient noise such
as traffic, air conditioners, machinery or music appliances that may prevent alert
persons from hearing the alarm. The sounder may not be heard by persons who are
hearing impaired.
The signal strobe may not be seen. The electronic visual warning signal uses an
extremely reliable xenon flash tube. It flashes at least once every three seconds and
exceeds current Underwriters Laboratories standards for private mode viewing. The
visual warning signal is suitable for direct viewing and must be installed within an
area where it can be seen by building occupants. The strobe must not be installed in
direct sunlight or areas of high light intensity (over 60 foot candles) where the visual
flash might be disregarded or not seen. The strobe may not be seen by the visually
impaired and is not intended to meet American Disabilities Act (ADA) requirements.
The signal strobe may cause seizures. Individuals who have positive photic response to visual stimuli with seizures, such as persons with epilepsy, should avoid
prolonged exposure to environments in which strobe signals, including this strobe,
are activated.
The signal strobe cannot operate from coded power supplies. Coded power supplies produce interrupted power. The strobe must have an uninterrupted source of dc
power in order to operate correctly. System Sensor recommends that the sounder and
signal strobe always be used in combination so that the risks from any of the above
limitations are minimized.
Three-Year Limited Warranty
Syst em Se nsor warrants its enclosed product to be free from d efects in materials and workma nship under normal u se and service for a perio d of t hree years
from date of manufac ture. System Sensor makes no o ther express warranty
for the encl osed prod uct. No agent , representative, dealer, or employe e of the
Company has th e a utho rity to increas e o r a lter the obligation s o r l imitations
of this Warranty. The Company’s ob ligation of this Warranty sha ll be limit ed
to the rep lacement of any part of the product whic h i s f ound to be def ecti ve
in mat erials or workmanship under normal use and se rvice d uring t he three
year period commenci ng w ith the date of manu facture. After pho ning Syst em
Sensor’s toll free number 800 -SEN SOR2 (736-7672) for a Return Authori zation
number, send defecti ve units postag e prepaid to: System Senso r, Retur ns
Department, RA #__________, 3825 Ohio Avenue, St. Cha rles, IL 60174. Please
include a note descr ibing the malfunction and suspe cted cause of fai lure.
The Co mpany shall not be obligated to repla ce unit s which are f ound to be
defective b ecause of damag e, u nreas onab le use, modifica tions, o r a ltera tion s
occurring after the date of manufacture. In no case shall the Company be
liable for a ny cons equential o r incidental damages for breach of this or any
other War ranty, expressed or implie d whatsoever, even if the loss o r damage
is caused by the Company’s negligence or f ault. Some states do not allow the
excl usion or limitation of incide ntal or co nsequential damages, so the above
limitation or exclu sion may not app ly to you. T his Warranty gives you specific
legal rights, and you may also have other righ ts which vary from state to state.
D900-14-00 4 I56-0983-015R
©2005 System Sensor
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