WESTERMO ODW-710-F1 Fibre Optic Modem User Guide

: June 6, 2024
: westermo

Table of Contents

WESTERMO ODW-710-F1 Fibre Optic Modem
General information
- Safety and Regulations
- Interface specifications
LED Indicators
DIP-switch settings
Start up guide
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

WESTERMO ODW-710-F1 Fibre Optic Modem

General information

Legal information

The contents of this document are provided “as is”. Except as required by applicable law, no warranties of any kind are made in relation to the accuracy and reliability or contents of this document, either expressed or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Westermo reserves the right to revise this document or withdraw it at any time without prior notice. Under no circumstances shall Westermo be responsible for any loss of data or income or any special, incidental, and consequential or indirect damages howsoever caused. More information about Westermo can be found at www.westermo.com

Safety and Regulations

Warning signs are provided to prevent personal injury and/or damages to the product. The following levels are used:

Level of warning| Description| Consequence personal injury| Consequence material damage
---|---|---|---

WARNING

| Indicates a potentially hazardous situation| Possible death or major injury| Major damage to the product

CAUTION

| Indicates a potentially hazardous situation| Minor or moderate injury| Moderate damage to the product

NOTICE

| Provides information in order to avoid misuse of the product, confusion or misunderstanding| No personal injury| Minor damage to the product

NOTE

| Used for highlighting general, but important information| No personal injury| Minor damage to the product

Before installation:
Read this manual completely and gather all information on the product. Make sure that you understand it fully. Check that your application does not exceed the safe operating specifications for this product.

WARNING – SAFETY DURING INSTALLATION
The product must be installed by qualified service personnel and built in to an apparatus cabinet or similar, where access is restricted to service personnel only.

WARNING – HAZARDOUS VOLTAGE
Do not open an energized product. Hazardous voltage may occur when connected to a power supply.

WARNING – PROTECTIVE FUSE
It must be possible to disconnect manually from the power supply. Ensure compliance to national installation regulations. Replacing the internal fuse must only be performed by Westermo qualified personell.

CAUTION – CLASS 1 LASER PRODUCT
Do not look directly into a fibre optical port or any connected fibre, although the product is designed to meet the Class 1 Laser regulations and complies with 21 CFR 1040.10 and 1040.11.

CAUTION – ELECTROSTATIC DISCHARGE (ESD)
Prevent electrostatic discharge damages to internal electronic parts by discharging your body to a grounding point (e.g. use a wrist strap).

CAUTION – HANDLING OF SFP TRANSCEIVERS
SFP transceivers are supplied with plugs to avoid contamination inside the optical port. They are very sensitive to dust and dirt. If the fibre is disconnected from the product, the protective plugs on the transmitter/receiver must be connected. The protective plugs must be kept on during transportation. The fibre optics cables must be handled the same way.

Care recommendations
Follow the care recommendations below to maintain full operation of product and to fulfill the warranty obligations:

Do not drop, knock or shake the product. Rough handling above the specification may cause damage to internal circuit boards.
Use a dry or slightly water-damp cloth to clean the product. Do not use harsh chemicals, cleaning solvents or strong detergents.
Do not paint the product. Paint can clog the product and prevent proper operation. If the product is used in a manner not according to specification, the protection provided by the equipment may be impaired. If the product is not working properly, contact the place of purchase, nearest Westermo distributor office or Westermo technical support.

Cleaning of the optical connectors
In the event of contamination, the optical connectors should only be cleaned by the use of recommended cleaning fluids and correct cleaning equipment.

Recommended cleaning fluids:

Methyl-, ethyl-, isopropyl- or isobutyl-alcohol
Hexane
Naphtha

Product disposal

This symbol means that the product shall not be treated as unsorted municipal waste when disposing of it. It needs to be handed over to an applicable collection point for recycling electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help to reduce hazardous substances and prevent potential negative consequences to both environment and human health, which could be caused by inappropriate disposal.

Declaration of Conformity
Hereby, Westermo declares that this product is in compliance with applicable EU directives and UK legislations. The full declaration of conformity and other detailed information is available at www.westermo.com/support/product- support.

Agency approvals and standards compliance

Type	Approval / Compliance
EMC	EN 61000-6-1, Immunity residential environments

EN 61000-6-2, Immunity industrial environments
EN 61000-6-3, Emission residential environments
EN 61000-6-4, Emission industrial environments
EN 50121-4, Railway signalling and telecommunications apparatus
IEC 62236-4, Railway signalling and telecommunications apparatus
DNV Standard for Certification no. 2.4
Safety| UL/CSA 60950-1, IT equipment
FCC Part 15.105

Notice:

| This equipment has been tested and found to comply with the limits for a Class A digi- tal device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interfer- ence to radio communications. Operation of this equipment in a residential area is likely

to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Type tests and environmental conditions

Electromagnetic Compatibility

20 V/m 80% AM (1 kHz), 800 – 1000 MHz

20 V/m 80% AM (1 kHz), 1400 – 2700 MHz

2 kVrms 50 Hz 1min (@ rated power < 60V)

Environmental
Temperature| EN 60068-2-1

EN 60068-2-2

Functional description

OVP Over Voltage Protection
OCP Over Current Protection

Converter PROFIBUS DP – optical fibre
ODW-710-F1 is a fibre optic modem that converts between electrical PROFIBUS DP and a fibre optical link.

Data rate up to 12 Mbit/s
ODW-710-F1 converts PROFIBUS DP data using data rates from 9 600 bit/s up to 12 Mbit/s. Retiming of the PROFIBUS DP data ensures that the correct signal form is transmitted from the ODW-710-F1 converter.

Automatic data rate detection
The PROFIBUS data rate is set automatically as soon as the ODW-710-F1 receives a correct data frame, whether data is received from PROFIBUS DP or the fibre optic link. The detected data rate remains until a number of consecutive faulty received frames have been detected or no further frames are detected within the timeout period. The timeout period is set by switches, with the default setting of 31 faulty frames or 5 seconds without any received frames.

Interface specifications

PROFIBUS DP (RS-485)

Electrical specification| EIA RS-485 / EN 50 170
Data rate| 9 600 bit/s, 19.2, 93.75, 187.5, 500 kbit/s, 1.5, 3, 6 and 12 Mbit/s
Data format| 8 data bits, even parity, 1 stop bit, 11 bits total
Protocol| PROFIBUS DP / EN 50170
Data Rate detection| Yes, compliant with EN 50 170
Retiming| Yes
Turn around time| In accordance with EN 50 170
Transmission range| £ 1200 m, depending on data rate and cable type (EIA RS-485)
Settings| None, external termination and failsafe biasing
Protection| Installation Fault Tolerant (up to ±60 V)
Isolation to| Power and Status port
Connection| 9-pin D-sub female
Shielded cable| Not required
Conductive housing| Isolated to all other circuits and housings

External supply current capability for proper startup

Status|
---|---
Port type| Signal relay, changeover contacts
Rated voltage| Up to 48 VDC
Operating voltage| Up to 60 VDC
Contact rating| 500 mA @ 48 VDC
Contact resistance| < 50 mW
Isolation to| PROFIBUS DP and Power port
Connection| Detachable screw terminal
Connector size| 0.2 – 2.5 mm2 (AWG 24 – 13)
Shielded cable| Not required

Branch circuit protection (fuse) is required for this unit with rating not exceeding 20 A. Product should be connected to UL Listed power supplies rated 12 – 48 VDC, min 500 mA or 24 VAC, min 500 mA or reliably grounded DC SELV source.

PROFIBUS DP (RS-485)

Electrical specification| EIA RS-485 / EN 50 170
Data rate| 9 600 bit/s, 19.2, 93.75, 187.5, 500 kbit/s, 1.5, 3, 6 and 12 Mbit/s
Data format| 8 data bits, even parity, 1 stop bit, 11 bits total
Protocol| PROFIBUS DP / EN 50170
Data Rate detection| Yes, compliant with EN 50 170
Retiming| Yes
Turn around time| In accordance with EN 50 170
Transmission range| £ 1200 m, depending on data rate and cable type (EIA RS-485)
Settings| None, external termination and failsafe biasing
Protection| Installation Fault Tolerant (up to ±60 V)
Isolation to| Power and Status port
Connection| 9-pin D-sub female
Shielded cable| Not required
Conductive housing| Isolated to all other circuits and housings

Location of Interface ports, LED’s and DIP-switches

LED Indicators

LED	Status	Description

PWR

Power

| ON| Power is on.
OFF| Power is off.
BA

Bus active

| ON| Data rate has been identified and data frames are being received on the

electrical or optical interface.

OFF| Data rate has not been identified.
CH 2| Not used
CH 1

Channel 1 link status

| ON| Fibre link to other unit has been

established at CH 1.

Flashing| Optical power detected but link to other unit has not been established

at CH 1.

OFF| No optical power detected and

no link to other unit has been established at CH 1.

DPR

Receive PROFIBUS DP

| Flash| Data received on the electrical interface and transmitted out on the

optical interface.

OFF| No data received on the electrical

interface.

FR

Receive fibre link

| Flash| Data received on the optical interface

and transmitted out on the electrical interface.

OFF| No data received on the optical

interface.

FL R

Failure link remote

| ON| Remote fibre link failure. A fibre link

is out of operation at any other unit than this one.*

Flashing| Hardware error or invalid configura-

tion.

FL L

Failure link local

| ON| Local fibre link failure. A fibre link is

out of operation.

Flashing| Hardware error or invalid configura-

tion.

Only valid if used togheter with ODW-710-F2 units in a multidrop network.
Note : During power up, all LED’s will turn on for about 1 second.

DIP-switch settings

CAUTION – ELECTROSTATIC DISCHARGE (ESD)
Prevent electrostatic discharge damages to internal electronic parts by discharging your body to a grounding point (e.g. use a wrist strap).

detail diagram 4 detail diagram 5 detail diagram
6

See section “About the automatic data rate detection” for a more detailed description.

Start up guide

Follow the steps below to get the unit up and running in a simple application.

Use the factory DIP-switch settings.
Connect The fibre link between the both units.
Connect the power supply to both units. The Fibre link should be in operation as indicated by the CH1 LED.
Connect the PROFIBUS DP connectors between both ODW-710-F1 and PROFIBUS units configured to be units in the PROFIBUS DP network. The PROFIBUS DP will be in operation and the data rate will be automatically detected, as indicated by the BA LED.
The point to point application is up and running.
Note : In an ODW-710-F1 fibre optic link there will be some additional processing delays that do not exist in an electrical bus. It is possible that the PROFIBUS application must be adjusted to accommodate for this delay. See “Calculating system processing delay” for more information on how to determine the overall system delay time.

LED indication under normal operation

Data from the PROFIBUS master is received at the ODW-710-F1 electrical port (as indicated by the DPR LED), data rate is automatically detected (as indicated by the BA LED), data bits are retimed according to the determined rate and sent out on the optical fibre at CH 1.
The ODW-710-F1 slave unit receives data at optical fibre CH 1 (as indicated by the FR LED), data rate is automatically detected (as indicated by the BA LED) and data is sent out on the electrical port.
Responses from the PROFIBUS slaves are processed in the same fashion and sent back to the PROFIBUS master in the opposite direction.

LED indication during optical link failure

If one fiber in the optical fibre pair fails, all cummunication with will be lost and the FL R LED’s will turn on. The ODW-710-F1 that is still sensing optical power will indicate this by flashing the CH1 LED. detail diagram
10

If both fibers in the optical fibre pair fails, all cummunication with will be lost, the CH1 LED’s will turn off and the FL R LED’s will turn on.

Calculating system processing delay

Data exchange between a PROFIBUS DP master and slave via ODW-710-F1 fibre optic link, will be delayed due to the length of the optical fibre and the signal processing within the ODW-710-F1. The signal processing delay is dependent on the data rate, and the fibre delay is dependent on the total length of the optical fibre. The additional time resulting from the optical fibre and ODW-710-F1 is the Overall system delay.

| Delay @ £ 1.5 Mbit/s| Delay @ 3 to 12 Mbit/s
---|---|---
Optical fibre length delay (typical)| 5 µs/km| 5 µs/km
Signal processing, electrical to fibre (max)| 1 tbit + 1 µs| 9 tbit + 1 µs
Signal processing, fibre to electrical (max)| 0.3 µs| 0.3 µs
Signal processing, fibre to fibre (max)| 1.3 µs| 1.3 µs

Note! tbit = 1 / Baud rate (Baud rate in bit/s)

Example
One PROFIBUS DP master and slave using a data rate of 12 Mbit/s. and a total fibre length of 40 km.
A data frame sent from the master to a slave.

Fibre: The total optical fibre length delay. 40 x 5 μs = 200 μs
Converter electrical to fibre: Signal processing delay (ODW-710-F1 connected to PROFIBUS DP master). 9 tbit + 1 μs = 9 x 0.083 μs + 1 μs ≈ 1.1 μs
Converter fibre to electrical: Signal processing delay (ODW-710-F1 connected to addressed slave). 0.3 μs
The system delay is calculated by summing the delays in item 1 to 3 above: 200 μs + 1.1 μs + 0.3 μs = 201.4 μs

About the interfaces

Power
The power terminal has two independent inputs, +VA and +VB, allowing redundant power input. The ODW-710-F1 power supply is galvanically isolated from all other interfaces.

Optical fibre interfaces
ODW-710-F1 uses Small Form Factor Pluggable (SFP) transceivers. This means that a wide range of different fibre transceivers and connectors can be used.

PROFIBUS DP interface
The PROFIBUS DP interface is a female 9-position D-sub. Pin assignments are compliance with the PROFIBUS standard EN 50 170.

Status port
The status port connects to an internal relay witch may be used to trigger an external alarm if a fault condition occurs. During normal operation pins 1 and 2 are in contact with each other, and pins 2 and 3 are isolated. During an optical link failure, or power failure, pins 1 and 2 are isolated, and pins 2 and 3 are in contact with each other. Optical link failures can be classified in to two categories, local or remote, as indicated by the FL L and FL R LED’s. A local link failure is when an optical link is down at this particular unit. A remote link failure is when an optical link is down at some other unit. From the factory, the status port is set to trigger on both types of link failures. However, by setting DIP-switch S1:1 to the ON position, the status port will only trigger when a local link failure has occurred.
Note : Setting DIP-switch S1:1 ON is only applicate if using the ODW-710-F1 together with ODW-710-F2 in a multidrop network.

About the automatic data rate detection

ODW-710-F1 automatically detects the data rate by monitoring incoming PROFIBUS data frames on both the electrical and optical interfaces. When the data rate has been established the BA LED will go active. If no data frames are transmitted for a period of time the automatic data rate detection will restart and the BA LED will go inactive. The idle time before the automatic data rate detection re-starts is set using DIP-switches S2:4 and S2:5. The factory default setting is 5 seconds. The automatic data rate detection determines the actual data rate by listening for PROFIBUS Start Delimiters (SD1 – SD4) at the beginning of each data frame. If one or more Start Delimiters are lost the automatic data rate detection will re-start. The number of lost Start Delimiters before the automatic data rate detection re- starts is set using DIP-switches S1:2 and S2:6 – S2: 8. The factory default setting is 31 faulty frames (31 lost Start Delimiters).

Note : Start Delimiters can be lost during an electrical or optical disturbance. For example a PROFIBUS slave unit is connected/disconnected or an optical fibre is disconnected. It is advisable to start of by using the factory default settings and only manipulate them if a problem exists.

Mounting

This unit should be mounted on 35 mm DIN-rail, which is horizontally mounted inside an apparatus cabinet, or similar. Snap on mounting, see figure.

Cooling
This unit uses convection cooling. To avoid obstructing the airflow around the unit, use the following spacing rules. Minimum spacing 25 mm (1.0 inch) above /below and 10 mm (0.4 inches) left /right the unit. Spacing is recommended for the use of unit in full operating temperature range and service life.

Removal
Press down the black support at the top of the unit. See figure.

Westermo • SE-640 40 Stora Sundby, Sweden
Tel +46 16 42 80 00 Fax +46 16 42 80 01
E-mail: info@westermo.com
www.westermo.com