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P/N 315-093285-10
Installation Instructions
Model SLT-1
Leased Line/Municipal Tie Module
Siemens Industry, Inc.
Building Technologies Division
Florham Park, NJ
Siemens Building Technologies, Ltd.
Fire Safety & Security Products
2 Kenview Boulevard
Brampton, Ontario
L6T 5E4 Canada
OPERATION
The Model SLT-1 module from Siemens Industry,
Inc., is used with the SXL-EX System to provide
connections for Leased Line and/or Municipal Tie.
Either or both connections can be used. Terminal
Block 1 (See Figure 1) provides the connection to
TB3 on the Main Board.
If the green LED (labeled DS1) on the module is
pulsing, it indicates that the module is active.
Effective with SLT-1 Rev. 1.1 and higher, and
SXL-EX Rev. 2.0 or higher, the SLT-1 will ener-
gize the municipal tie connection for one minute
after the last alarm received at the panel. Mod-
ules with firmware below this level will energize
the municipal tie connection until the panel is
reset.
With SLT-1 Rev. 1.1 and higher and SXL-EX Rev.
2.0 or higher, the municipal tie box can be reset
before the panel is reset. The SLT-1 continues to
energize the Leased Line connection until the
panel is reset for all firmware versions.
The SLT-1 causes a trouble on the display panel
when any of the following three conditions
occurs:
1. There is an open on the data line.
2. No SLT-1 module is connected to the System,
though there is an address for the module in
the System configuration.
3. An SLT-1 module is connected to the system,
but there is no address for it in the System
configuration.
INSTALLATION
Remove all system power before
installation, first battery and then AC.
(To power up, connect the AC
first and then the battery.)
Installation in SXL-EX System
(Refer to Figure 2):
Install the SLT-1 in the upper right-hand portion of
the EN-SX enclosure according to the following
steps.
1. Insert the four 6-32 x 1/2 standoffs over the
four studs in the upper right-hand corner of
the SXL-EX enclosure as shown in Figure 2.
2. Place the upper four holes of the SLT-1 board
over the four standoffs in the upper right-hand
portion of the EN-SX enclosure. Using the
four 6-32 screws provided, fasten the SLT-1
board to the standoffs.
Figure 1
SLT-1 Module
TB1
TB3 TB2
SLT-1
+24V
-V
DS1
Polling LED
Leased Line
Municipal Tie
DATA
EARTH
-
-+
+
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2
In an Existing SXL® System
(Refer to Figure 3):
To place the SLT-1 on the Main Board of an
existing system, first remove the existing Display
Board and its cover according to the following
steps.
1. Remove the Display Cover from the Display
Board as shown in Figure 3. Discard its top
two standoffs.
2. Unplug the ribbon cable from the Display
Board at jumper JP4 on the Main Board.
3. Remove the Display Board from the SXL
Main Board by unscrewing the four 6-32
screws and setting them to one side.
4. Remove and discard the two standoffs that
were supporting the two upper corners of
the Display Board.
5. Use the four 6-32 x 1-7/8 standoffs, the 6-32
screw, and the two 15/16 standoffs provided
as follows:
• Fasten one of the longer standoffs provided
to the back of the upper left-hand corner of
the SLT-1 with the screw provided.
• Remove the screw from the upper right-
hand corner of the Main board.
• Screw another long standoff to the upper
right-hand corner of the Main board.
• Screw the last two long standoffs provided
to the Main board as shown in Figure 3.
6. Place the SLT-1 module on the standoffs that
were installed in Step 5 above.
7. Fasten the two short standoffs remaining to
the bottom two corners of the SRC-8 board
(They are supports for the Display Board).
8. Once the SLT-1 is in place, re-install the
Display Board by reversing Steps 1-3 above.
4X
4X
Figure 2
Mounting the SLT-1 in an SXL-EX System
PROGRAMMING
Use SXL Program Level 9 to program the SLT-1
module. (Refer to the SLX-EX Manual, P/N 315-
095997.)
1. To enter the System:
a. Press the RESET and DRILL keys at the
same time.
b. Enter your password (Refer to Enter
Password under PROGRAM MODE in the
Manual.)
c. Press the SILENCE key to confirm the
information for the system.
d. An A should display in the 7-segment
display.
e. If an F appears, repeat the process until
an A appears.
2. To enter the Program Mode:
a. Press the ACK key once.
b. Note that a P displays in the 7-segment
display.
c. Be sure the PROGRAM/TEST LED is lit.
3. To select the desired Program Mode
level:
a. To select Program Level 9, press
the RESET button 9 times.
b. Press SILENCE.
Figure 3
Mounting the SLT-1 in an Existing SXL® System
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3
SLT-1
Leased Line
To SLX-EX
Main Board
Terminal TB-3
(Non-Power Limited)
Style 4
Supervised TB1
TB2
TB3
+24V
SUPV
Municipal Tie
Polarity shown in
supervisory state.
*
If Municipal Tie is not
used, install 1K ohm,
1 watt resistor,
P/N 140-112315.
NOTE:
*
Leased Line
2K-5K
Power Limited
Unsupervised
-V
DATA
EARTH
Municipal Tie +
+
+
+
-
-
-
-
Positive and Negative
Ground Fault Detected at
<20K For Terminals on TB1.
Positive and Negative Ground Fault
Detected at <80K for terminals on TB2 and TB3.
4. To program the SLT-1:
a.
Program Level 9 has one sublevel. The
sublevel is displayed on the 7-segment
display following the hyphen (-).
b. Note that the top yellow LED on the
display is lit.
• Press the RESET key three times to
turn on the fourth yellow LED.
• If the fourth red LED is on, the SLT-1
is activated.
• If the fourth red LED is not on, the
SLT-1 is not activated.
c. Press the DRILL key to toggle between ON
(activated) and OFF (de-activated) as
desired.
5. To exit the system:
a. Press the ACK key until an L ap pears on
the display.
b. Press SILENCE to exit the program.
SLT-1 Electrical Characteristics
Supervisory: 50mA
Alarm: 345mA
WIRING
(Refer to Figure 4)
Connect TB1 on the SLT-1 to TB-3 on the SXL-EX
Main Board, being sure to observe the terminal
labels (+24V, -V, DATA, EARTH).
Electrical Connections for
NFPA 72 Municipal Tie
(Refer to Figure 4)
1. All wiring must be in accordance with Article
760 of NEC or local building codes.
2. Minimum wire size: 18 AWG
3. Electrical Ratings:
Trip Coil: 14.5 ohms
Trip Current: 240mA DC max
Supervisory Current: 1mA DC
Voltage: 18.3-24.1 VDC open circuit voltage
Total external resistance should not exceed
22.5 ohms.
4. Minimum emergency power:
60 hour standby
5 minute alarm
Electrical Connections for
NFPA 72 Leased Line
(Refer to Figure 4)
1. All wiring must be in accordance with Article
760 of NEC or local building codes.
2. Leased line is power limited to NFPA 70 Article 760.
3. Leased line circuit rating: 24 VDC open circuit
load must be a compatible polarity reversal
labeled remote station receiver unit.
Voltage: 18.3-24.1 VDC
Rated current: 3mA to 9mA, alarm/
supervisory
External circuit resistance: 2K to 5K ohms
4. Minimum emergency power:
60 hour standby
5 minute alarm
Figure 4
Wiring the SLT-1
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BATTERY CALCULATIONS
Battery backup is required for the SLT-1. To
determine the size battery you need, refer to the
battery calculation table in the SXL-EX Manual,
P/N 315-095997.
MAINTENANCE AND TESTING
No periodic maintenance is required; however,
Siemens Building Technologies, Inc. does
recommend periodic testing.
Note: Before testing, you MUST notify the
personnel in charge of the Fire Alarm
panel, since the test may disrupt normal
business operations. In addition, you
MUST notify the local Fire Department if
the department is connected to the
municipal tie and/or the leased line.
Alarm Operation
Effective with SLT-1 Rev. 1.1 or higher and
SXL-EX Rev. 2.0 or higher, the municipal tie
connection voltage returns to normal one minute
after the last alarm. If the module is connected to
the municipal box, the panel will display Fault
code 5, indicating that the box needs to be reset.
With SLT-1 Rev. 1.1 or higher and SXL-EX Rev.
2.0 or higher, the municipal tie box can be reset
before the panel is reset.
Test the leased line and the municipal tie for alarm
operation by:
• Activating an initiating device on a zone
configured for alarm.
• Confirming the line reversal of the municipal
tie (duty cycled) and the leased line.
Supervisory Operation
The municipal tie and leased line will not change
state on any supervisory event.
Trouble Operation
The leased line interface can be tested for trouble
operation by:
• Disconnecting a wire from a IDC zone at the
control panel.
• Confirming the leased line interface is open
circuited (0 volts).
SLT-1 Supervision
Check SLT-1 supervision by:
• Disconnecting the DATA line from TB1 on the
module.
• The control panel displays the fault codes 5
and 8.
TROUBLESHOOTING
If the municipal tie and the leased line fail
to operate:
1. Check DS1 for activity. If there is no activity,
check for proper wiring connections, no
power, or some system problem.
2. Check that there are 24 volts between the
TB1 terminals +24V and -V.
3. If the problem continues, replace the module.
4. Check the new module for correct wiring
before powering up the system.
If Fault code 8 (Auxiliary Port Fault)
appears on the display:
1. The module is connected but is not config-
ured. Refer to SLT-1 Programing instructions.
2. Check the module for an error in the wiring.
If Fault code 5 (Municipal Tie Fault)
appears on the display:
1. There is a wiring fault: an open circuit be-
tween the SLT-1 module and the municipal
tie box.
2. The municipal tie box needs to be reset.
P/N 315-093285-10
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