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  3. DFM-BRK Fiber Optic Interface and Bracket

Siemens DFM-BRK Fiber Optic Interface and Bracket User manual

  • Hello! I've reviewed the provided installation instructions for the SIEMENS DFM and DFM-BRK fiber optic interface and bracket. This document describes how to install these devices to connect to a FireFinder XLS digital audio network (DNET) . I'm ready to assist you with any questions you have about proper installation, fiber connections, and other aspects of these devices.
  • What type of fiber is used?
    What is the maximum distance for the fiber optic connection?
    What connector type is used for the fiber optic cables?
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P/N 315-033779-6
INTRODUCTION The Model DFM-BRK from Siemens Industry, Inc.,
provides a fiber optic interface for the FireFinder XLS
digital audio network (DNET) which interconnects the
DAC-NET modules. The DFM-BRK can be connected
either Style 4 or Style 7 and utilizes the Telebyte model
DFM fiber optic converter. The DFM uses 62.5/125 um
fiber at distances up to 2KM. Standard ST connectors
are provided for connection of the optical fiber.
The DFM-BRK mounts in the rear of the XLS CAB-1/-2/-3
enclosure and occupies one module space.
INSTALLATION
Remove all system power before installation, first battery then AC. (To power up,
connect the AC first, then the battery.)
Each DFM-BRK requires at least one DFM converter. Required DFM may be ordered
under P/N 500-634910. Check the wiring section below and determine the quantity
and location of the DFMs for each DFM-BRK in the system.
1. Attach one of the DB-25 cables, P/N 555-134899, supplied with the
DFM-BRK to each DFM. Secure the DB-25 connector using the screws
which are captive on the DFM.
2. Place the DFMs on the DFM-BRK with the ST connectors facing the bottom
of the DFM-BRK. Be sure to observe the locations of the DFMs for the first
and last DAC-NETs in a Style 4 network (see Figure 2). These two locations
use only one DFM and their location on the DFM-BRK is critical to proper
DNET operation.
Fiber Optic Interface and Bracket For DNET
Installation Instructions
Model DFM / DFM-BRK
Figure 1
DFM-BRK Fiber Optic
Interface Bracket For
DNET
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Siemens Industry, Inc.
Building Technologies Division
P/N 315-033779-62
3. Place the DFM hold-down bracket over the DFMs (see Figure 1) and secure
in place using the two screws and nuts provided in the DFM-BRK hardware
kit.
4. Plug the 6 position connector on the end of the DB-25 cable into the
corresponding receptacle on the DFM-BRK.
5. Mount the DFM-BRK in the back of the enclosure with the four screws
from the hardware kit.
6. Wire between the DFM-BRK TB1 and the DAC-NET (see Figure 2).
7. Connect 24V from TB4 on the PSC-12 to TB2 on the DFM-BRK, be sure to
observe the correct polarity (see Figure 3).
8. Connect the fiber optic cables to the DFMs. The transmit (T) output on each
DFM must go to the receive (R) input on its partner DFM for proper opera-
tion.
9. Apply power. If the Power LED on the DFM-BRK is not lit, check the polarity
of the 24V input on TB2.
10. Once all DFM-BRKs are installed, check the DNET for errors. Refer to the
DNET fault LEDs on the DAC-NETs. Once all DNET fault LEDs are clear the
DNET is properly connected.
ELECTRICAL RATINGS
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FIBER RATINGS
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Siemens Industry, Inc.
Building Technologies Division
P/N 315-033779-63
11
33
55
77
22
44
66
88
91011 13 1512 14 16
ONE SLOT OF CC-5 / CC-2
FIRST DAC-NET
*
*
DFM-BRK
END MIDDLE END
DO NOT USERESISTOR 3.3K
P/N 140-034721 (US/CA)
DFM
TR
DFM
TR
DFM
TR
DFM
TR
11
33
55
77
22
44
66
88
91011 13 1512 14 16
ONE SLOT OF CC-5 / CC-2
DFM
LAST DAC-NET
*
DFM-BRK
DO NOT USE
TR
RESISTOR 3.3K
P/N 140-034721 (US/CA)
11
33
55
77
22
44
66
88
91011 13 1512 14 16
ONE SLOT OF CC-5 / CC-2
*
OMIT FOR STYLE 4
DFM
MIDDLE DAC-NET
DFM-BRK
DO NOT USE
TR
RESISTOR 3.3K
P/N 140-034721 (US/CA)
**
Figure 2
DNET Over Fiber Style 7 / Style 4
NOTES:
1. All wire and fiber connections supervised.
2. All wire connections power limited.
3. Maximum fiber length 2km.
4. Refer to DAC-NET Installation Instructions, P/N 315-035100.
5. For Style 4 (DCLB) two DFMs are required on all DFM-BRKs located in the middle of the network. Only one DFM is required at each end.
6. For Style 7 (DCLC) two DFMs are required on every DFM-BRK regardless of the location.
7. In Canada, ULC S524 requires that all interconnecting data communications links for networks be wired DCLC (style 7) except for
dedicated network communication to annunciators.
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Siemens Industry, Inc.
Building Technologies Division
Florham Park, NJ
Siemens Canada, Ltd.
1577 North Service Road East
Oakville, Ontario
L6H 0H6 Canada
P/N 315-033779-6
Figure 3
DFM-BRK Input Power Wiring
DFM
POWER
TO PSC-12 TB4*
TO NEXT MODULE
*USE 12-14 AWG
TB2
TR
1324
DFM
DFM-BRK
TR
+
+
+
+-
-
-
-
TB1
13572468
Document ID A6V10239120
Cyber security disclaimer
Siemens products and solutions provide security functions to ensure the secure operation of building comfort,
fire safety, security management and physical security systems. The security functions on these products and
solutions are important components of a comprehensive security concept.
It is, however, necessary to implement and maintain a comprehensive, state-of-the-art security concept that is
customized to individual security needs. Such a security concept may result in additional site-specific preventive
action to ensure that the building comfort, fire safety, security management or physical security system for your
site are operated in a secure manner. These measures may include, but are not limited to, separating networks,
physically protecting system components, user awareness programs, defense in depth, etc.
For additional information on building technology security and our offerings, contact your Siemens sales or
project department. We strongly recommend customers to follow our security advisories, which provide infor-
mation on the latest security threats, patches and other mitigation measures.
http://www.siemens.com/cert/en/cert-security-advisories.htm
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