635081 Fibre Modem-Multi Mode R1_1.p65

Revision 1.1 October. 2006
1
Fibre Modem - Multi-mode
P/N
P/N:: 995081
Model 3000 / Access 4000
Optically Isolated LAN Interface
INSTALLATION GUIDE
OVERVIEW:
The Inner Range Multi-mode Fibre Modem provides 2 separate, optically isolated ports to the Model 3000/4000 LAN.
Each Port has a Transmit and Receive pair with ST connectors which accommodate Multimode 62.5/125μm optical fibre
cables. The Fibre Modem has been designed to provide maximum Isolation with minimal delay.
The Fibre Modem can be powered from the LAN or from an external DC supply via the Power connector. LED indicators
show operational status (RUN) and the status of each receive line (FAULT). Data flow is indicated with TX and RX LED
indicators for each of the three ports. Two switched outputs are also provided, which can be wired directly into Zone
Inputs on a Concept 3000/4000 Module to monitor the state of each receive port.
The typical transmission distance between each Fibre Modem is up to 3000 metres.
The Fibre Modem can be used in a “LOOP” mode or in a “STAR” mode to create 2 separate electrically isolated LAN
segments. The Fibre Modems can also be “daisy chained” to cover larger sites.
Optical fibre transmits signals as light pulses rather than electrical pulses. This light transmission is unaffected by
electro-magnetic fields which allows cables to be routed near electrical conductors and machines. In addition, the Fibre
Cable usually has a metal free construction so there are no earth loop problems between LAN connections and the cable
will not transmit lightning pulses. This elimination of earth loops makes Fibre cable the primary choice for inter-building
links.
IMPORTANT NOTES:
1) The Fibre modem is transparent to the Control Module; it simply passes all LAN communication data as it is received.
The Fibre Modem is not addressed and does not generate any LAN messages of its own; therefore it is not treated as a
“LAN Module” by the Controller.
However, as the Fibre Modem connects to the Wire LAN, it does possess a LAN termination link and a pair of LAN Bias
Links which must be configured correctly.
2) A minimum of two Fibre Modems are required for each installation.
Disclaimer:
While every effort has been made to ensure the accuracy of this manual, the manufacturer assumes no responsibility or liability for
any errors or omissions. Due to ongoing development, this manual is subject to change without notice.
©
Designed & manufactured in Australia.
2005 - 2006. Inner Range Pty. Ltd.
Part No: 635081
Model 3000/Access 4000 Fibre Modem - Multi-mode
Multi-mode. Installation Notes.
2
SPECIFICATIONS
Supply Voltage:
Current Consumption:
Installation environment:
Fibre Optic Connections:
Fibre Optic Cable:
TX Optical Power:
RX Optical power:
Maximum Modem to Modem:
Physical dimensions:
Enclosure:
11 to 14V DC. (LAN or External Supply)
20mA (Idle) 120mA (max.)
0º to 40º Celsius
15% to 85% Relative humidity (non-condensing)
Type ST.
62.5/125μm diameter (850nm wavelength) Multi-mode Cable.
-12dBm (typ.)
-24dBm (min. for logic operation)
Optical Cable Distance: 3000 metres
PCB: 96 x 96 mm
Fibre Connector head protrudes 15mm from PCB
White Plastic 238(L) x 118(W) x 74(D)mm
PARTS LIST
-
Fibre Modem assembled in White Plastic enclosure.
8 way connector and Jumper links supplied on PCB.
635081 Fibre Modem Installation Guide (this document).
Note: No Fibre Patch cables supplied.
MOUNTING THE ENCLOSURE
1. The Fibre Modem is supplied in a plastic enclosure which can be mounted in a convenient location using
fasteners through the four mounting holes in the base.
2. Make sure the optical fibre cables are installed correctly and do not exceed the minimum radius specification of
the manufacturer when the enclosure cover is secured.
3. Secure the enclosure cover, using the screws provided.
FIBRE NETWORK DESIGN CONSIDERATIONS
The Fibre Modems can be used in a number of different configurations.
The flexible design allows daisy-chain, star and loop wiring, or a combination of these configurations.
See pages 7 & 8 for examples.
LAN Termination and LAN Bias.
Jumper Links are provided to enable the LAN Termination and Bias to be configured correctly for the Wire LAN
segment that the Fibre Modem is connected to. See Pages 4, 7 & 8 for details.
Multi-mode Fibre Modem and Fibre Optic cable limits
When designing the Fibre Modem network for a particular Concept 3000/4000 system, a number of factors limit the
number of Fibre Modems and/or the length of fibre optic cabling that can be used. These are as follows:
The Fibre Modem signal processing delay.
The propagation delay and signal attenuation of the Optical Fibre cable connected between Fibre modems.
The propagation delay and signal attenuation of the RS485 twisted pair LAN cable connecting the Fibre modem
to the Concept 3000/4000 Modules.
Revision 1.1 October. 2006
3
To simplify the multi-mode fibre network design, use the following rules.
1)
Maximum length of Optical Fibre cable between two Fibre Modems must not exceed 3000 metres (3km).
2)
Maximum length of twisted pair LAN cable from a Fibre Modem LAN Port to the furthest Module on that
segment of LAN must not exceed 1500m (1.5km).
3)
No two Modules on the LAN shall be more than 15 “Delay Units” apart.
4)
When used in a loop configuration, the Fibre optic loop may be no more than 14 “Delay Units” in length.
The number of “Delay Units” is calculated as follows:
Add 1 Delay Unit for each Fibre Modem in the path.
Add 1 Delay Unit for each 1000 metres (1km) of Optical Fibre cable in the path.
Add 1 Delay Unit for each 1350 metres (1.35km) of twisted pair LAN cable in the path.
e.g. The following Multi-mode fibre system designs are acceptable.
Control
Module
___________
1000m LAN
Fibre
_________
Modem 2km Fibre
Fibre
_________
Modem 3km Fibre
Fibre
Modem
__________
350m LAN
Universal
Expander
The total “Delay Units” for the two Modules furthest apart in this design = 8.
3 (Fibre Modems) + 5 (5km of Optical Fibre) + 1 (1350m of LAN cable)
Control
Module
1m | LAN
LCD _______ Fibre ______
Term 1200m Modem 2km
LAN
Fibre
Fibre
Modem
______ Fibre ______ Fibre ______ Universal
3km Modem 2km Modem 1500m Expander
Fibre
LAN
Fibre
The total “Delay Units” for the two Modules furthest apart in this design = 13.
4 (Fibre Modems) + 7 (7km of Optical Fibre) + 2 (2700m of LAN cable)
LCD _______
Terminal 200m
LAN
Fibre
M ode m
__________
1km Fibre
CONTROL
MODULE
LCD
Terminal
1m | LAN
| 50m LAN
Fibre
M ode m
__________
2km Fibre
Fibre
M ode m
_|_________ Universal
1500m
Expander
LAN
|
2km | Fibre
|
|
3km | Fibre
|
Mini _______
Expander 1200m
LAN
Fibre
M ode m
_______________________________
1km Fibre
Fibre
Modem
RF
__________
Expander
300m
LAN
Two calculations are required for this design:
-The total “Delay Units” for the Fibre optic loop in this design = 14 (maximum allowed)
5 (Fibre Modems) + 9 (9km of Optical Fibre)
-The two Modules furthest apart in this design are the Mini Expander and the Universal Expander (highlighted).
The total “Delay Units” between these two Modules via the worst case path (shown in bold text) is 12.
4 (Fibre Modems) + 6 (6km of Optical Fibre) + 2 (2700m of LAN cable)
Model 3000/Access 4000 Fibre Modem - Multi-mode
Multi-mode. Installation Notes.
4
THE MULTI-MODE FIBRE MODEM PCB
EARTH.
The Fibre Modem has been designed with on-board LAN input Surge Protection.
Surge Protection is used to protect the wire LAN from outside interference (electrical surges). Even inside a
building there can be sources of electrical interference. e.g. Electric motors, welders, and their cabling.
If Surge protection is required, the “EARTH” connection must be wired to an effective EARTH.
P1. (AUX LAN)
Ancillary LAN Connection.
For temporary connection of an LCD Terminal when required.
LK3 (TERM).
LAN Termination Jumper Link.
When using Fibre Modems, each optically isolated segment of the Wire LAN is treated as an independent LAN
system for the purposes of determining where LAN termination is to be fitted.
Link LK3 should be fitted:
-When the Fibre Modem is the first or last connection on a daisy-chained Wire LAN segment.
-When the Fibre Modem is one of the two devices that are furthest apart on a star-configured Wire LAN
segment.
TX1. Wire LAN data transmit indication.
RX1. Wire LAN data receive indication.
T1.
LAN+, 0V, A, B.
OUT 1 , OUT 2.
Wire LAN Connection.
Twisted Pair Cable must be used for LAN A & LAN B.
Optical PORT Fault Status.
See Page 7 for details.
LK4/LK5. (LAN BIAS)
LAN Bias Links for Wire LAN Connection.
Links are not fitted when the Wire LAN connection connects to:
-A Control Module.
-The Wire LAN connection on another Fibre Modem that already has LK4/LK5 fitted.
(In this case, only the Fibre Modem that provides the path to the Control Module has LK4/LK5 fitted)
-Port 2 or 3 on a LAN Isolator.
Links are fitted in all other circumstances when the Wire LAN connection connects to one or more remote Modules.
NOTE: When measuring LAN A-B Voltage on a LAN segment biased by a Fibre Modem (i.e. LK4/LK5 fitted), the
acceptable voltage range is 200 to 800mV. (Not 200 - 400mV as stated in other Concept 3000/4000 installation
manuals)
Revision 1.1 October. 2006
5
P3.
Connect to Inner Range Power Supply
See Page 6 for details.
TX2. Optic PORT 1
Flashing, Port Active
Fibre Optic Port 1
Transmitter
RX2. Optic PORT 1
Flashing, Port Active
Fibre Optic Port 1 Receiver.
TX3. Optic PORT 2
Flashing, Port Active
Fibre Optic Port 2
Transmitter
RX3. Optic PORT 2
Flashing, Port Active
Fibre Optic Port 2 Receiver.
STATUS LAMPS
RUN.
Fibre Modem Status.
Flashing = Normal Operation).
FAULT.
Indicates Fibre Optic Port Status.
See Page 7 for details.
P2. Not Used in Field installation.
Model 3000/Access 4000 Fibre Modem - Multi-mode
Multi-mode. Installation Notes.
6
POWER & LAN WIRING
MODEM POWERED FROM THE LAN
O
O
O
O
LAN+ 0V A
B
OUT1
+
-
From Previous
LAN module
A
O
B
+
-
A
O
O
O
OUT2
B
To next
module
MODEM POWERED FROM EXTERNAL SUPPLY
O
O
O
O
O
O
LAN+ 0V A
B
OUT1
O
O
OUT2
Heavy duty Fig. 8 cable
(24/0.20 or 14/0.20)
recommended for Ext.
Power Supply wiring.
* Note: If required, the LAN
to subsequent Modules may
derive +12V from “LAN +”
or the incoming LAN cable.
*
EXTERNAL
PWR SUPPLY
(BATTERY
BACKED)
+
-AB+
+
-A
B
From previous
LAN module
To next
module
MODEM POWERED USING POWER CONNECTOR
Inner Range Power
Supply
e.g. 994055
2 Amp Power Supply
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Fibre modem PCB.
Power Connector
Ribbon Cable
# Note:
If required, the LAN to
subsequent Modules may derive
+12V from “LAN +” when used
in this configuration or from the
incoming LAN cable.
O
O
O
O
LAN+ 0V A
B
OUT1
-
A
O
B
+
From previous
LAN module
#
+
-
A
O
O
O
OUT2
B
To next
module
Revision 1.1 October. 2006
7
MONITORING THE FIBRE OPTIC STATUS
The Fibre Modem monitors the Receive data input of the Optical Ports. If no data is received after a period of 255
seconds the output goes into Alarm. This will also occur if the RX input on either Optical Port is not connected.
Fault
Data Detected in Both Ports
Data not Detected in Port 1
Data not Detected in Port 2
Data not Detected in Both Ports
Fault LED
OFF
Fast Flash
Slow Flash
ON
OUT 1
Seal
Alarm
Seal
Alarm
OUT 2
Seal
Seal
Alarm
Alarm
The outputs OUT 1 and OUT 2 can be monitored by connecting them to spare Zone Inputs on the nearest module on the
LAN. They are wired directly to the Zone Inputs, as the End-of-Line resistors are included on the Fibre Modem.
Fibre
Modem
Out1
0V
Z1
0V
Out2
0V
Z2
0V
Module
Zone
Inputs
MULTI-MODE FIBRE MODEM CONFIGURATIONS
Fig. 1. Building to Building Connection.
The basic Building to Building connection uses 2
Fibre Modems.
The main connection is made by connecting Port 1
of Modem 1 to Port 1 of Modem 2.
A backup connection can be made (recommended)
between Port 2 of Modem 1 and Port 2 of Modem 2.
Lan Bias links LK4/LK5 must be installed in the
Remote Fibre Modem (Modem 2)
If another Fibre modem is connected on this remote
wire LAN, LK4/LK5 must not be installed in that
modem.
CONTROL
MODULE
LAN
Module/s
Fibre Modem
1
Optional Second
Connection via
Fibre port 2
TX/RX Pair
Fibre Modem
2
LAN
Module
Modem 1
Fibre Port 1
TX/RX Pair
Up to 3
Kilometres
Modem 2
Fibre Port 1
TX/RX Pair
LAN
Module
8
Model 3000/Access 4000 Fibre Modem - Multi-mode
Multi-mode. Installation Notes.
MULTI-MODE FIBRE MODEM CONFIGURATIONS Cont.
Fig. 2. Fibre Loop Backbone
This configuration provides LAN
connection between the Control Module
and every remote Module even if the Fibre
Cable is broken.
CONTROL
MODULE
LAN
Modules
Modem 1
Fibre Port 2
TX/RX Pair
This diagram shows an Alarm system with
five remote LAN connections.
Each remote LAN segment is connected
to the main LAN via the Fibre modems.
The total length of Fibre optic cable used
in the loop will be limited to less than 7km
due to the number of Fibre Modems used.
See pages 2 & 3 for details.
When the fibre is cut, for example
between Modem 3 and Modem 4, OUT 2
on Modem 3 will go into Alarm indicating
that data is no longer being received. The
LAN connection for segment 4 is still intact
and the data will go via Modem 5 and
Modem 6, while the data for Modem 3 will
go via Modem 2.
LAN
Module/s
Fibre
Modem
6
LAN
Module/s
Fibre
Modem
5
Fibre Modem
1
Modem 1
Fibre Port 1
TX/RX Pair
Fibre
Modem
2
Fibre
Modem
3
Fibre Modem
4
LAN
Module/s
OUT 1
LAN
Module/s
OUT 2
LAN Segment 3 Fibre
Modem RX Status
monitored by local Mini
Expander
LAN
Module/s
All Fibre Modems with the exception of
Modem 1, must have LK4/LK5 installed.
Fig. 3. Daisy-chain connection to a remote LAN
segment.
CONTROL
MODULE
LAN
Modules
This diagram shows a system where 8 Fibre
Modems have been used in a daisy-chain
configuration to connect to remote Modules.
Fibre Modem
1
The total length of Fibre optic cable used in this
application will be limited to less than 5km due to the
number of Fibre Modems used.
See pages 2 & 3 for details.
Modem 1
Fibre Port 1
TX/RX Pair
Fibre
Modem
2
All Fibre Modems with Modules connected, with
the exception of Modem 1, must have LK4/LK5
installed.
LAN
Module/s
LAN Module/s
if required
RX
TX
Modem A
Fibre
Modem
7
RX
TX
When Connecting Modem A to Modem B, RX
on Modem A is connected to TX on Modem B,
and TX is connected to RX.
Fibre Modem
8
TX RX
TX RX
Modem B
LAN
Module/s
Modem 8
Fibre Port 1
TX/RX Pair
LAN
Module/s