RLH Industries SED-03-2 User manual

!RLH Industries, Inc. • Tel. 866-DO-FIBER • Fax [phone] • www.fiberopticlink.com!Page "1
RS-232!
Industrial Media Converter
COMPACT, RUGGED &
TEMPERATURE HARDENED
Introduction
This Industrial Serial Data media converter transports a full 9-Pin
RS-232 copper signal over fiber optic cable. This is an ideal
solution for extending serial data communications over long
distances or near large electrical equipment. Fiber optics provide
long distance communication up to 74 mi. (120km) and immunity
to EMI/RFI and potential transient surges which can cause noise
or damage equipment.
The system supports asynchronous serial data rates from 50 bps
to 1Mbit/s and has an auto-sensing feature that eliminates the
need to manually set serial data rates. A comprehensive set of
LEDs on the front panel indicate power status, fiber status, and
serial data activity. Powering options include standard 24-48VDC
or high range DC powering of 125VDC. This rugged system is
designed to operate over a wide operating temperature -40 to
+70°C and features dual redundant power inputs, and a system
alarm relay for maximum uptime and reliability. Included is a DIN
clip and wall mount ears for easy installation into to a wide range
of environments.
U-151 2018C-0327

Standard Features
Transmits a 9-Pin RS-232 Signal
Supports baud rates of 50 bps to 1Mbit/s
Selectable DTC/DCE switch for easy installation
Each Pin is Optically Isolated
Optional Breakout Cable for 3 channels of serial data
Convenient LEDs for power, fiber, and serial signals
ST and SC Connectors, !
Singlemode and Multimode options available
Extends communication up to 74 mi. (120km) over Fiber
DC power, fiber break, and/or system failure alarm relay
Rugged design for wide operating temperature
Limited Lifetime warranty
Made in U.S.A.
The leader in!
rugged fiber optic
technology.
USER GUIDE
RLH Industries, Inc.
RS-232 Industrial Media Converter

!
General Safety Practices
Intended Audience
This guide is intended for use by knowledgeable installation, operation and repair personnel. Every effort has been
made to ensure the accuracy of the information in this guide. However, due to constant product improvement,
specifications and information contained in this document are subject to change without notice.
Conventions
Symbols for notes, attention, and caution are used throughout this manual to provide readers with additional
information, advice when special attention is needed, and caution to prevent injury or equipment damage.
The equipment discussed in this document may require tools designed for the purpose being described. RLH
recommends that service personnel be familiar with the correct handling and use of any installation equipment
used, and follow all safety precautions including the use of protective personal equipment as required.
Caution - Severe Shock Hazard!
• Never install during a lightning storm or where unsafe high voltages are present.
• Copper wires may carry high voltages. Use caution when handling.
• Do not open the product housing, there are no user serviceable parts.
Guidelines for handling terminated fiber cable
"
• Do not bend fiber cable sharply. Use gradual and smooth bends to avoid damaging glass fiber.
• Keep dust caps on fiber optic connectors at all times when disconnected.
• Do not remove dust caps from unused fiber.
• Keep fiber ends and fiber connectors clean and free from dust, dirt and debris. Contamination will cause signal loss.
• Do not touch fiber ends.
• Store excess fiber on fiber spools at site
!RLH Industries, Inc. • Tel. 866-DO-FIBER • Fax [phone] • www.fiberopticlink.com!Page "2
RLH Industries, Inc.

Application Diagrams
DTE Device (PC) To DCE Device (Modem)
This Fiber Optic System is always used in a pair. One of the media converters must always be set to DTE mode via
the dip switch and the other media converter must be set to DCE for proper operation. When connecting DCE and
DTE end devices over fiber, pair the DCE end device with the media converter set to DTE mode, and pair the DTE
end device with the media converter set to DCE mode. Then make the interconnections between each of the
media converters and the end devices with a straight through serial cable as illustrated below.
"
Typical Application Diagram
!
DCE Device To DCE Device
This Fiber Optic System is always used in a pair. One of the media converters must always be set to DTE mode via
the dip switch and the other media converter must be set to DCE for proper operation. When connecting two DCE
end devices over fiber, where the DCE end device connects to the media converter set to DTE mode, use a straight
through serial cable. Where the other DCE end device connects to the media converter in DCE mode use a null
(crossover) serial cable. Below is an example of a system where both end devices are DCE devices and connected
with the appropriate straight through and null (crossover) cables.
"
(DCE to DCE / DTE to DTE)
Same Device Type Application Diagram!
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
Up to!
74 mi./120km
Fiber Optic
Cable
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
DTE Device!
(Computer)
DCE Device!
(Modem)
DTE Switch Detail
DCE Switch Detail
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
DB-9 !
Serial Cable
Straight Thru
RS-232!
Media Converter
RS-232!
Media Converter
DB-9 !
Serial Cable
Straight Thru
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
DCE Device!
(Modem)
DCE Device!
(Modem)
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
Up to!
74 mi./120km
Fiber Optic
Cable
DB-9 !
Serial Cable !
Null / Crossover
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
DCE Switch Detail
DTE Switch Detail
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
DB-9 !
Serial Cable
Straight Thru
RS-232!
Media Converter
RS-232!
Media Converter
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DB-9 Breakout Cable (Straight Through Cable) – 3 Channel
The optional DB-9 Breakout cable will convert your 9-Pin RS-232 device to 3 separate channels of 3-Pin RS-232
serial data as illustrated below. The break-out cable is wired as a straight through cable, if the device is in DTE
mode, all 3 connectors will be DTE type interfaces.
Likewise, if the Device is in DCE mode, all 3 connectors will be DCE type interfaces. If you are connecting DCE to
DCE or DTE to DTE a crossover cable will need to be used on those connections.
"
"
Breakout Cable Application Diagram
NOTE: 3 Channel DB-9 Breakout Cables split the cables 9 wires into three DB-9 ports using only the !
3 pins for sending the RS-232 Signal. See DB-9 Breakout Cable section for more pin and cable details.
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
Channel 3 - DCE Device
Channel 2 - DTE Device
Channel 1 - DCE Device
RS-232!
Media Converter
DB-9 Breakout!
Cable
Straight Thru
Cable
Crossover!
Cable
Straight Thru
Cable
DTE Mode
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
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Installation
Prior to installation:
• Check for shipping damage.
• Check the contents to ensure correct model.
• Make sure you have the correct fiber type and power available.
• Have a clean, dry installation environment ready.
Required for installation:
• Suitable wall, panel, or DIN rail space.
• Local power source (24~48VDC or 125VDC depending on model).
• Flat head screwdriver for connecting wiring.
• Phillips screwdriver for attaching to wall (optional).
Physical Layout
RLH Industrial Media Converter’s user ports, switch, and LED indicators are located on the front and top panels.

PWR 1PWR 2
NOCOMNC
ALARM
-+-+
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER
Front View
4.93”
1.20”
RS-232!
DB-9 Port
DIP Switch
LED !
Indicators
Fiber Optics
Top View
Power/Alarm
Terminals
3.93”
Alarm Terminals
Power 2 Terminals
Power 1 Terminals
DIN Rail
Clip
Chassis !
Ground Screw
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DIN Rail Mounting
The DIN clip for mounting the system is mounted onto the rear panel. Hook the DIN clip on the top flange of the
DIN rail and rotate to the locked position to install. To remove, push up to depress the spring latch and rotate off of
the DIN rail.
"
DIN Rail Mounting
Wall Mounting
The system can be easily wall mounted by attaching the provided wall mount ears and hardware. Attach the wall
mount ears by following the instructions below. !
"
Wall Mounting
!
Connect Optical Fiber Cable
The optical ports may be equipped with ST or SC fiber connectors. A fiber pair is required for operation with dual
fiber models, TX is the signal output side and RX is the signal input side. Single fiber models (bi-directional)
combine input and output, by using different wavelengths over one fiber.
Connect fiber cables to correct TX and RX ports. On dual fiber models, Verify that the TX fiber at one module is
connected to the RX port on the opposite end. On single fiber systems there will be an Aand Bside. The Aside
must connect to the Bside.
Do not remove fiber cable caps until you connect fiber to the unit, watch for dust and contamination. Fiber cables
should be routed loosely avoiding tight bends to prevent excessive optical loss.
DIN!
Rail
Click
DIN!
Rail
Push Up
Installation
Removal
1
Replace!
connector.
Attach
Wall Mount Kit.
Left Side
Remove!
connector.
Mount to wall
using supplied
hardware.
Right Side
2
3
4
Wall
Mount
Kit
Remove
screws.
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Connect Serial Port
The RLH Serial Data Fiber Link transports all 9-Pins of RS-232 copper serial data over fiber optic cable. Serial
connections are made to the provided female DB-9 serial port. Please refer to the below pinouts to ensure the
appropriate connections are being made.
"
!
DCE / DTE Selection Switch
This DIP switch is used to determine the flow of data to and from the device. When set to the DTE Position the
device's DB-9 Serial Port will behave as a DTE type device. When Set to the DCE position the device’s DB-9 Serial
Port will behave as a DCE type device.
This Fiber Optic System is always used in a pair, one device must always be set to DTE and the other device must
be set to DCE. Please use null or straight thru cables to appropriately connect to end devices. Consult our
application diagrams for deployment examples.
"
Detail of Serial Data!
DB-9 Port
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
FIBER
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
FIBER
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
1
5
6
9
DB-9 Port Pinouts
Pin
Name
Function
1
DCD
Data Carrier Detect
2
RXD
Receive Data
3
TXD
Transmit Data
4
DTR
Data Terminal Ready
5
GND
Ground Signal
6
DSR
Data Set Ready
7
RTS
Request to Send
8
CTS
Clear to Send
9
RI
Ring Indicator
RS-232 DB-9 Switch
Setting
Switch Position
DCE
DTE
"
"
DIP Switches on Front Panel
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
FIBER
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
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DB-9 Serial Cables
Straight Through 9-Pin Serial Cable
A Straight Through or One-to-One cable is used to connect a DTE device (PC) to a DCE device (modem or other
communications device).#The transmit and receive lines are not cross-connected in this case, hence the name.
"
Null (Crossover) 9-Pin Serial Cable
A Null Modem or Crossover cable is used to connect a pair of the same devices, DTE to DTE devices or DCE to
DCE devices, together.#For this to work, the Transmit (TXD) pin of one device needs to be connected to the
Receive (RXD) pin of the other device, and vice versa.
To enable handshaking between the two devices, the#Request to Send (RTS) pin of one device must be connected
to the Clear to Send (CTS) pin of the other device, and the Data Set Ready (DSR) pin is connected to the Data
Terminal Ready (DTR) pin of the other.
"
DTE Device
STRAIGHT THROUGH CABLE
DCE Device
Function
Name
Pin
Signal Direction
Pin
Name
Function
Data Carrier Detect
DCD
1
1
DCD
Data Carrier Detect
Receive Data
RXD
2
2
RXD
Receive Data
Transmit Data
TXD
3
3
TXD
Transmit Data
Data Terminal Ready
DTR
4
4
DTR
Data Terminal Ready
Ground Signal
GND
5
5
GND
Ground Signal
Data Set Ready
DSR
6
6
DSR
Data Set Ready
Request to Send
RTS
7
7
RTS
Request to Send
Clear to Send
CTS
8
8
CTS
Clear to Send
Ring Indicator
RI
9
9
RI
Ring Indicator
DCE Device
NULL / CROSSOVER CABLE
DCE Device
Function
Name
Pin
Signal Direction
Pin
Name
Function
Data Carrier Detect
DCD
1
1
DCD
Data Carrier Detect
Receive Data
RXD
2
2
RXD
Receive Data
Transmit Data
TXD
3
3
TXD
Transmit Data
Data Terminal Ready
DTR
4
4
DTR
Data Terminal Ready
Ground Signal
GND
5
5
GND
Ground Signal
Data Set Ready
DSR
6
6
DSR
Data Set Ready
Request to Send
RTS
7
7
RTS
Request to Send
Clear to Send
CTS
8
8
CTS
Clear to Send
Ring Indicator
RI
9
9
RI
Ring Indicator
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DB-9 Breakout Cable (Straight Thru Cable) – 3 Channels
The optional DB-9 Breakout cable will convert your 9-PIN RS-232 device to 3 separate channels of 3-PIN RS-232
serial data as illustrated below. The break-out cable is wired as a straight through cable, if the device is in DTE
mode, all 3 connectors will be DTE type interfaces. Likewise, if the Device is in DCE mode, all 3 connectors will be
DCE type interfaces. If you are connecting DCE to DCE or DTE to DTE a crossover cable will need to be used on
those connections.
!
"
RS-232 DB-9 Breakout Cable
Connect Power
The system has redundant power terminals that accommodates a backup power supply in the event of an outage.
Follow these steps when attaching wires to power terminals located on the top of the module.
• Check that DC power source voltage matches the accepted !
voltage range of the device to avoid damaging the unit.
• Disconnect power from the DC power source prior to !
connecting to the Fiber Link.
• Connect the DC power cables to the terminal pairs!
labeled PWR 1 or PWR 2. The system is NOT polarity sensitive.
• Energize the power source. The POWER LED will be ON !
indicating that the system has power.
Male DB-9!
Connector
Female DB-9 Connectors
Channel 1
Channel 2
Channel 3
Breakout
Channel 1
Channel 2
Channel 3
DB-9 Pins
2
3
5
2
3
5
2
3
5
RXD
TXD
GND
RXD
TXD
GND
RXD
TXD
GND
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PWR 1PWR 2
NOCOMNC -+-+
ALARM
Detail of Power Terminals, !
Alarm Terminals, and Ground Screw

Connect Alarm Contact
Connect wires from the equipment monitoring the Serial Data Fiber Link to the alarm terminals located on the top
of the unit next to the power terminals. The alarm relay offers a Common, Normally Open, and Normally Closed
position.
When the system is communicating and properly functioning the Fiber LED will turn ON and the alarm relay will
energize. If DC Power is lost, Fiber is broken, or one side of the system stops functioning the alarm relay will !
de-energize and the FIBER LED will be OFF.
!
Front Panel LED Indicators and Dip Switches!
"!
Troubleshooting
If problems occur, please follow the troubleshooting steps below prior to contacting technical support.
POWER LED Indicator OFF
• Check power supply voltage and rated device voltage.
• If correct, check connections at the power terminals.
FIBER LED Indicator Off
• Optic port connection may be incorrect.
• Make sure fiber cable from the TX optic is connected to the RX optic on both ends of the system.
• Make sure single-mode equipment is using single-mode fiber and multimode equipment !
is using multimode fiber.
• Check to ensure the fiber path is within the dB Loss and distance specifications of the model being installed.
TX and RX LED Indicators Off
• Verify serial data pinouts of each end device.
• The fiber optic media converters must always be set to DTE on one side, and DCE on the other.
• Null or straight through cables will need to be appropriately used to connect to the end devices.
!
If all connections and indicators has been verified please contact the RLH support team for further assistance.
FIBER LINK
RS-232
SERIAL
DATA
FIBER LINK
RS-232
SERIAL
DATA
RLH Industries, Inc.
RS-232
FIBER
TX
RX
POWER
RX
FIBER
TX
N/AN/A
DTEDCE
Indicator
Color
LED
Description
POWER
Green
OFF
System has NO power
ON
System has power
FIBER
Green
OFF
No Fiber Link detected
ON
Fiber Link detected
TX
Green
OFF
No activity
ON/BLINKING
Copper signal transmitting
RX
Green
OFF
No activity
ON/BLINKING
Copper signal receiving
Detail of LED Indicators
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Ordering Information
RS-232 Industrial Media Converters
Add -A to the end of the part number for 125VDC input power option.
Bidirectional single fiber models require an ASide and BSide unit for a complete system.
Please contact your RLH sales representative for pricing and delivery information.
DB-9 Serial Cables
See DB-9 Serial Cables section for more information.
Please contact your RLH sales representative for pricing and delivery information.
Optics
Side
Distance
Wavelength
Fiber
Part Number
Dual Fiber!
Multimode SC
-
2 km/1.2 mi
1310nm
50/62.5 μm
SED-03-2
Dual Fiber!
Multimode ST
-
2 km/1.2 mi
1310nm
50/62.5 μm
SED-04-2
Single Fiber!
Single-mode SC
A
20km/12.4mi.
Tx 1310nm!
Rx 1550nm
8~9 μm
SED-10-2
B
20km/12.4mi.
Tx 1550nm!
Rx 1310nm
8~9 μm
SED-11-2
A
60km / 37mi.
Tx 1310nm!
Rx 1550nm
8~9 μm
SED-14-2
B
60km / 37mi.
Tx 1550nm!
Rx 1310nm
8~9 μm
SED-15-2
Dual Fiber!
Single-mode SC
-
20km/12.4mi.
1310nm
8~9 μm
SED-40-2
-
60km / 37mi.
1310nm
8~9 μm
SED-41-2
-
120km / 74 mi.
1550nm
8~9 μm
SED-45-2
Dual Fiber!
Single-mode ST
-
20km/12.4mi.
1310nm
8~9 μm
SED-50-2
-
60km / 37mi.
1310nm
8~9 μm
SED-51-2
-
120km / 74 mi.
1550nm
8~9 μm
SED-55-2
Description
Length
Connector Ends
Part Number
Straight Through Cable!
(DB-9 Serial)
6 Feet
Male / Male
DB9-S-MM-06FT
Male / Female
DB9-S-MF-06FT
Female / Female
DB9-S-FF-06FT
Null / Crossover Cable!
(DB-9 Serial)
6 Feet
Male / Female
DB9-X-MF-06FT
Female / Female
DB9-X-FF-06FT
DB-9 Breakout Cable
4 Feet
Male / 3 Female
DB9-BREAKOUT-MF-04FT
DB-9 Gender Changer (M/M)
N/A
Male to Male
DB9-GENDER-MM
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General Specifications
Transmission method
Frequency modulated light via two optical fibers
Multimode
1310nm
Single-mode
1310nm/1550nm
Maximum Fiber!
Attenuation / Distance*
Single Fiber
Single-mode (8~9/125µm):
Up to 37 mi./60km range
Dual Fiber
Multimode (50/62.5/125µm):
1.25mi./2 km range
Single-mode (9/125µm):
Up to 74 mi./120km range
*Note: Distances equated using industry standard fiber and connector attenuation. !
Fiber condition, splices and connectors may affect actual range.
Connector Type
ST or SC Multimode or Single-mode
Power Margin
11dB(2Km, M/M), 12dB ~ 35dB (20 ~ 120Km, S/M)
Protocols
RS-232
DB-9 Port (Female)
RS-232
DCD, RXD, TXD, DTR, GND, DSR, RTS, CTS, RI
Signal Isolation
Optical Isolation 3000 Vrms
Baud Rates
50bps-1Mbit/s Automatic Detection
DIP Switches
DCE / DTE
Specifies the DB-9 Ports Operational Mode (DCE or DTE)
LED
POWER
DC Power OK
See Front Panel LED Indicators section in!
User Guide for more detailed information.
FIBER
Fiber Connection OK
TX
RS-232 Copper Transmit
RX
RS-232 Copper Receive
Power Input
24~48VDC or 125VDC nominal
Dual redundant power inputs
Power Consumption
150mA @ 24VDC or 3.6 Watt
DC Input Isolation (In/Out)
1.5KV
Voltage Reversal Protection
Will operate with V+ or V- in either power terminal
Over Current Protection
1.0A (Automatic Recovery)
Temperature
Storage
-40˚C to +85˚C (-40˚F to +185˚F)
Operating
-40˚C to +70˚C (-40˚F to +158˚F)
Dimensions/Mounting
H 4.93” x W 1.20” x D 3.93” (not including DIN clip)
Standard T-35 DIN rail mounting or wall mount with included brackets
Warranty
Limited Lifetime
!RLH Industries, Inc. • Tel. 866-DO-FIBER • Fax [phone] • www.fiberopticlink.com!Page "12

Technical Support
Contact Information
Email:
support@fiberopticlink.com
24/7 technical support:
Toll Free 1-855-RLH-24X7
Toll Free 1-855-754-2497
Corporate Headquarters:
RLH Industries, Inc.
936 N. Main Street
Orange, CA 92867 USA
Phone:
[phone]
Toll Free 1-800-877-1672
Toll Free 1-866-DO-FIBER!
Fax:
[phone]
Email:
info@fiberopticlink.com
Web site:
www.fiberopticlink.com
RLH Industries, Inc.
936 N. Main Street, Orange, CA 92867 USA
T: [phone]
F: [phone]
Please contact your RLH sales representative for
pricing and delivery information.
Specifications subject to change without notice.
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