Data Sheet - System Sensor

Sync•Circuit™ Module
The Sync•Circuit module synchronizes SpectrAlert®
Advance strobes at 1 Hz and horns and chimes at
temporal 3 over a single pair of wires. Patented module
technology also allows the silencing of horns or
chimes on horn/strobe and chime/strobe models over
a pair of wires.
Features
•Two-wire operation from module to the devices
•Silences horns and chimes over a two-wire loop
•Synchronizes strobes at 1 Hz
•Synchronizes horns and chimes to temporal 3 pattern
•Patented technology
•Interconnects modules for multiple zone synchronization
•Module controls two Style Y (Class B) circuits or one Style Z
(Class A) circuit
•New NAC slave feature enables the interconnection of slave
modules over a supervised NAC loop
Agency Listings
S4011
S5512
7300-1653:202
3032010
The MDL3 Module is designed to work with the SpectrAlert and
SpectrAlert Advance 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.
Application Flexibility. The Sync•Circuit module is designed to
power and synchronize either two 3-amp circuits wired in Class B,
or one 3-amp circuit powered as Class A. Should more than two
zones require synchronization, additional modules can be added
by interconnecting the “slave” input and output terminals between
modules.
Sync•Circuit™ Module Specifications
Architectural/Engineering Specifications
Synchronization Circuit Module shall be a System Sensor Sync•Circuit Model
_________ listed to UL 464 and UL 1971 and shall be approved for fire
protective service. The module shall synchronize SpectrAlert® or SpectrAlert
Advance strobes at 1 Hz and horns at temporal 3. Also, the module shall be
capable of silencing the horns on horn/strobe models, while operating the
strobes, over a single pair of wires. The module shall be capable of mounting
to a 411⁄16˝ × 411⁄16˝ × 21⁄8˝ back box and shall control two Style Y (class B) or
one Style Z (class A) circuit. The module shall be capable of multiple zone
synchronization by connecting multiple modules (slaves) together. Slaves
can be driven from either the slave output of a prior MDL3 or from the NAC
output of the master. Using the NAC enables all wiring to be supervised,
whereas the slave-out terminals are not supervised, so their use is confined to
specific applications.
Note: The module shall not operate on a coded power supply.
Physical Specifications
Dimensions
51⁄4˝ L × 51⁄4˝ W
Mounting
411⁄16˝ × 411⁄16˝ × 21⁄8˝ back box
Indoor Operating Temperature
32° to 120° F (0° to 49° C)
Electrical/Operating Specifications
Operating Voltage
12 or 24 VDC and FWR unfiltered
Operating Voltage Range (12 V)
8.5 to 17.5 VDC
Operating Voltage Range (24 V)
16.5 to 33 VDC
Maximum Load on Loop
3 Amps/zone
U.S. Patent Nos.
5,598,139
5,850,178
Master-Slave Mode
FACP
+
–
NAC 1
NAC 2
}
}
B+ +
+
B– –
–
B+ +
+
B– –
–
+
–
}
}
}
}
ZONE 1
OUT
ZONE 1
IN
ZONE 2
OUT
MASTER
NAC
SLAVE IN
SLAVE
IN
SLAVE
OUT
}
}
}
}
+
(STYLE Z CLASS A)
NAC 3
}
}
–
B+ +
+
B– –
–
A+ +
A– –
+
–
+
–
}
}
}
}
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
OUT
SLAVE
ZONE 2
IN
SLAVE
IN
MASTER MODULE HORN CONTROL CONNECTS TO INTERRUPTABLE POWER SOURCE
FACP #1
NAC 1
NAC 2
NAC 3
}
}
}
B+ +
B– –
+
EOL
–
B+ +
+
B– –
–
B+ +
+
B– –
–
+
–
}
}
}
}
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
OUT
MASTER
ZONE 2
IN
NAC
SLAVE IN
SLAVE
IN
SLAVE
OUT
}
}
}
}
+
TO NEXT
SPECTRALERT
ADVANCE
DEVICE OR EOL
–
+
2 STYLE Y ZONES
–
(CLASS B)
TO NEXT
SPECTRALERT
ADVANCE
DEVICE OR EOL
+
–
+
WIRING MUST BE
CONTAINED WITH EITHER
THE COMMON ENCLOSURE
OF MODULES OR
ENCLOSURES WITHIN 20
FEET OF EACH OTHER WITH
WIRING INSIDE CONDUIT
–
TEMP JUMP OFF
FACP #2
+
–
NAC 1
}
}
B+ +
+
B– –
–
A+ +
+
A– –
–
+
–
}
}
}
}
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
OUT
ZONE 2
IN
NAC
SLAVE IN
SLAVE
SLAVE
IN
SLAVE
OUT
}
}
}
}
+
TO NEXT
SPECTRALERT
ADVANCE DEVICE
–
+
–
TO NEXT
SPECTRALERT
ADVANCE DEVICE
+
–
STYLE Z ZONES
+
(CLASS A)
–
TEMP JUMP OFF
+
NAC
SLAVE IN
SLAVE
OUT
}
}
}
}
–
(CLASS B)
NAC 1
TO NEXT
SPECTRALERT
ADVANCE
DEVICE OR EOL
+
–
–
+
2 STYLE Y ZONES
–
+
FACP
TO NEXT
SPECTRALERT
ADVANCE
DEVICE OR EOL
–
TEMP JUMP OFF
+
1. Any mix of Horn/Strobes, Chime/Strobes or Strobe-only devices is
acceptable
2. Horn and chime control connects to interruptible power source
Master-Slave Using NAC-Slave Input
HORN
CONTROL
ZONE 2
IN
Horns and Chimes Silenced Over Two-Wire
Circuit
NAC 2
WIRING MUST BE
CONTAINED WITH EITHER
THE COMMON ENCLOSURE
OF MODULES OR
ENCLOSURES WITHIN 20
FEET OF EACH OTHER WITH
WIRING INSIDE CONDUIT
}
}
B+ +
B– –
–
B+ +
+
B– –
–
+
–
+
TO NEXT
SPECTRALERT
ADVANCE DEVICE
+
–
NAC 1
–
TO NEXT
SPECTRALERT
ADVANCE DEVICE
+
–
NAC 2
}
}
B+ +
+
B– –
–
B+ +
+
B– –
–
+
STYLE Z ZONES
+
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
OUT
ZONE 2
IN
NAC
SLAVE IN
SLAVE
SLAVE
IN
SLAVE
OUT
}
}
}
}
+
–
+
–
TO NEXT
SPECTRALERT
ADVANCE
DEVICE OR EOL
+
TO NEXT MDL3 NAC
–
SLAVE IN OR EOL
+
2 STYLE Y ZONES
(CLASS B)
–
TEMP JUMP OFF
FACP
+
–
+
}
}
}
}
TO NEXT
SPECTRALERT
ADVANCE
DEVICE OR EOL
(CLASS A)
–
–
}
}
}
}
HORN
CONTROL
ZONE 1
OUT
ZONE 1
IN
ZONE 2
OUT
ZONE 2
IN
NAC
SLAVE IN
MASTER
SLAVE
IN
SLAVE
OUT
}
}
}
}
+
–
+
–
TO NEXT SPECTRALERT
ADVANCE DEVICE OR EOL
+
–
+
–
TEMP JUMP OFF
TEMP JUMP OFF
Current Draw and Ordering Information
Red
White
MDL3R,
MDL3W,
MDL3RA (Canadian) MDL3WA (Canadian)
Voltage
12
24
Average
Current (mA)
DC
FWR
10
12
12
15
Peak
Current (mA)
DC
FWR
50
60
60
75
3825 Ohio Avenue • St. Charles, IL 60174
Phone: 800-SENSOR2 • Fax: 630-377-6495
In-rush
Current (mA)
DC
FWR
100
120
120
150
NAC Slave
Input (mA)
DC
FWR
3.5
4
4.5
5
©2009 System Sensor.
Product specifications subject to change without notice. Visit systemsensor.com for
current product information, including the latest version of this data sheet.
A05-1007-005 • 2/09 • #2030