Page 1
User Guide
6650-2291
ODW-641
Fibre Optic Modem
Westermo Teleindustri AB
©
Industrial Converter
PROFIBUS DP to
Fibre Optic Link.
Point to Point applications
www.westermo.com
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6650-2291
Legal information
The contents of this document are provided “as is”. Except as required by applicable
law, no warranties of any kind, either express or implied, including, but not limited to,
the implied warranties of merchantability and fitness for a particular purpose, are made
in relation to the accuracy and reliability or contents of this document. 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 the following Internet address:
http://www.westermo.com
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6650-2291
Safety
!
!
!
Before installation:
Read this manual completely and gather all information on the unit. Make sure
that you understand it fully. Check that your application does not exceed the safe
operating specifications for this unit.
This unit should only be installed by qualified personnel.
This unit should be built-in to an apparatus cabinet, or similar, where access is
restricted to service personnel only.
The power supply wiring must be sufficiently fused, and if necessary it must be
possible to disconnect manually from the power supply. Ensure compliance to
national installation regulations.
This unit uses convection cooling. To avoid obstructing the airflow around the
unit, follow the spacing recommendations (see Cooling section).
Before mounting, using or removing this unit:
Prevent access to hazardous voltages by disconnecting the unit from the power
supply.
Warning! Do not open a connected unit. Hazardous voltages may occur within
this unit when connected to a power supply.
Class 1 Laser Product
This unit is designed to meet the Class 1 Laser regulations. However, the user is
warned not to look directly into fibre optical fibre port or any connected fibre.
Care recommendations
Follow the care recommendations below to maintain full operation of the unit and to
fulfil the warranty obligations.
This unit must not be operated with covers or lids removed.
Do not attempt to disassemble the unit. There are no user serviceable parts inside.
Do not drop, knock or shake the unit. Rough handling beyond the specification may
cause damage to internal circuit boards.
Do not use harsh chemicals, cleaning solvents or strong detergents to clean the unit.
Do not paint the unit. Paint can clog the unit and prevent proper operation.
Do not expose the unit to any kind of liquids (rain, beverages, etc).
The unit is not waterproof. Keep the unit within the specified humidity levels.
Do not use or store the unit in dusty, dirty areas. Connectors as well as other
mechanical parts may be damaged.
If the unit is not working properly, contact the place of purchase, nearest Westermo
distributor office, or Westermo Tech support.
Fibre connectors are supplied with plugs to avoid contamination inside the optical port.
The plug should be fitted when no optical fibre is inserted in the connector, e.g. during
storage, service or transportation.
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6650-2291
Note. Fibre Optic Handling
Fibre optic equipment requires careful handling as the fibre components are very
sensitive to dust and dirt. If the fibre is disconnected from the modem, the protective
plug on the transmitter/receiver must be replaced. The protective plug must be kept on
during transportation. The fibre optic cable must also be protected in the same way.
If this recommendation is not followed, it can jeopardise the warranty.
Cleaning of the optical connectors
In the event of contamination, the optical connectors should be cleaned by using forced
nitrogen and some kind of cleaning stick.
Recommended cleaning fluids:
• Methyl-, ethyl-, isopropyl- or isobutyl-alcohol
• Hexane
• Naphtha
Maintenance
No maintenance is required, as long as the unit is used as intended within the specified
conditions.
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 55022, Emission IT equipment, class A
EN 55024, Immunity IT equipment
FCC part 15 Class A
EN 50121-4, Railway signalling and telecommunications apparatus
IEC 62236-4, Railway signalling and telecommunications apparatus
Safety EN 60950-1, IT equipment
ATEX* EN 60079-0 and EN 60079-15
* Applicable for ODW-641 Ex only
FCC Part 15.105
Notice:
EN 55022 Notice:
This equipment has been tested and found to comply with the limits for a Class A
digital 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 interference 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.
This is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
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6650-2291
ATEX Information (Applicable for ODW-641 EX only)
General
This unit is intended for use in Zone 2 hazardous location only.
Marking
II 3 G
Ex nA IIC T4 Gc
SPECIAL CONDITON
WARNING – DO NOT SEPARATE WHEN ENERGIZED
Indicate that this unit complies with relevant European standards that are
harmonised with the 94/9/EC Directive (ATEX).
II
3
G
Ex Indicates that this unit is in conformity with relevant European Ex standard(s).
nA
IIC Gas group, a typical gas i hydrogen.
T4
Gc
SPECIAL
CONDITON
Equipment group II.
This unit can be installed in all places with an explosive gas atmosphere other
than mines susceptible to firedamp
Equipment category 3.
A category is the classification according to the required level of protection.
This unit ensures the requisite level of protection during normal operation and
is intended for use in areas in which explosive atmosphere caused by gases,
vapours, mists, or dust mixtures are unlikely to occure or, if they do occure, are
likely to do so only infrequently and for a short periode only.
Indicates protection concerning explosive atmospheres caused by gases,
vapours or mists (G).
Type of protection used.
This unit is a non-sparking device "nA" which is constructed to minimize the
risk of occurence of arcs or sparks capable of creating an ignition hazard during
conditions of normal operation.
Temperature class T4 (T4 = 135°C).
This unit is classified in accordance with its maximum surface temperature
(external and internal).
Equipment protection level Gc (EPL Gc).
Equipment for explosive gas atmospheres, having a "enhanced" level of protection, which is not a source of ignition in normal operation and which may have
some additional protection to ensure that it remains inactive as an ignition
source in the case of regular expected occurences. EPL Gc are analogous to the
ATEX Categories (Category 3 G = EPL Gc).
This unit has a special condition of use.
The special conditon for safe use contains safety related information that is
necesarry for the correct installation and safe use.
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6650-2291
Ratings
Power (12 – 48) VDC; 240 mA
Ambient temperature –40ºC ≤ Ta ≤ +70ºC
Ingress protection (IP) IP21
Maximum surface temperatur 135ºC (temperature class T4)
Safety Control Drawing
Degree of protection IP 21
Ambient temperature –40°C to +70°C
Installation spacing
Direction relative this unit!
Minimum 25 mm above / below
Minimum 10 mm left / right
Position
Direction*/
descripton
Input/Output values
1 In/Out / TD+
2 In/Out / TD–
3 In/Out / RD+
4 Not connected
5 Not connected
6 In/Out / RD–
U = ± 1 V (4μV/s)
I = ± 20 mA
Data rate:
10/100 Mbit/s
7 Not connected
8 Not connected
Galvanically isolated via signal transformers and
capacitively isolated to signal ground through a
250 V 3300 pF capacitor.
See user manual for proven transient protection.
Position
12
Direction*/
descripton
1 In/Out / SHDSL
Input/Output values
U = ± 5 Vpk
I = ± 25 mA
1234
2 In/Out / SHDSL
Galvanically isolated via signal transformer and capacitively
isolated to signal ground through a 1,5kV 220pF capacitor.
See user manual for proven transient protection.
Position
See section Type tests and environmental conditions in this
user manual for proven transient protection.
Direction*/
descripton
1 In / Common
2 In / +Voltage A
3 In / +Voltage B
4 In / Common
Input values
= (10 – 60) VDC
U
in
= 295 mA @ 10 VDC
I
in
= Max 3 W
P
In
Data rate up to
15,3 Mbit/s
1
2
3
4
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6650-2291
SPECIAL CONDITION FOR SAFE USE
Ambient temperature:
This unit is designed for use in extreme ambient temperature conditions as follows:
–40 ºC ≤ Ta ≤ +70 ºC
Installation in an apparatus cabinet:
This unit requires installation in an Ex certified apparatus cabinet suitable for the area of use and
providing a degree of protection of at least IP54.
Resistance to impact:
This unit requires installation in an apparatus cabinet where adequate resistance to impact is
provided by the apparatus cabinet. See "Installation in an apparatus cabinet" above for requirements
on the external apparatus cabinet.
Resistance to light:
This unit requires installation in an apparatus cabinet where it is protected from light
(for example daylight or light from luminaires).
See "Installation in an apparatus cabinet" above for requirements on the external apparatus cabinet.
Secureness of plugs:
When this unit is installed in an explosive atmospheres, all connectors must be mechanically secured
to prevent loosening.
Conductor temperature:
When this unit is installed in locations with high ambient temperature, special precautions shall be
taken upon the choice of external conductors and the temperature rating of the conductor(s).
Directive 94/9/EC alongside with other directives:
Directive 2004/108/EC (EMC) applies and to assure a safe performance of this unit under the scope
of Directive 94/9/EC, refer to the electromagnetic immunity level specified under "Type tests and
environmental conditions" in this manual.
Standards and date of compliance
EN 60079-0 and EN 60079-15
2010-11-05
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Declaration of Conformity, ODW-641
Westerm o Teleindustri AB
Declaration of conformity
Org.nr/
Postadress/Postal address
Tel.
Telefax
Postgiro
Bankgiro Corp. identity number Registered office
S-640 40 Stora Sundby 016-428000 016-428001 52 72 79-4 5671-5550 556361-2604 Eskilstuna
Sweden Int+46 16428000 Int+46 16428001
The manufacturer
Westermo Teleindustri AB
SE-640 40 Stora Sundby, Sweden
Herewith declares that the product(s)
Type of product Model Art no
Industrial fiberoptic repeaters/media
converters
ODW-600 Series
3650-0xxx
is in conformity with the following EC directive(s).
No Short name
2004/108/EC Electromagnetic Compatibility (EMC)
References of standards applied for this EC declaration of conformity.
No Title Issu e
EN 50121-4 Railway applications – Electromagnetic compatibility
– Emission and immunity of the signalling and
telecommunications apparatus
2006
EN 55022 Information technology equipment - Emission 2006 +A1:2007
EN 55024 Information technology equipment - Immunity 1998 +A1:2001
+A2:2003
EN 61000-6-1 Electromagnetic compatibility – Immunity for
residential environments
2007
EN 61000-6-2 Electromagnetic compatibility – Immunity for
industrial environments
2005
EN 61000-6-3 Electromagnetic compatibility – Emission for
residential environments
2007
EN 61000-6-4 Electromagnetic compatibility – Emission for
industrial environments
2007
The last two digits of the year in which the CE marking was affixed: 09
Pierre Öberg
Technical Manager
29th September 2009
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6650-2291
Declaration of Conformity, ODW-641 EX
Westermo T eleindustri AB
Declaration of conformity
Org.nr/
Postadress/Postal address
Tel.
Telefax
Postgiro
Bankgiro Corp. identity number Registered office
S-640 40 Stora Sundby 016-428000 016-428001 52 72 79-4 5671-5550 556361-2604 Es kilstuna
Sweden Int+46 16428000 Int+46 16428001
The manufacturer Westermo Teleindustri AB
SE-640 40 Stora Sundby, Sweden
Herewith declares that the product(s)
Type of product Model Art no
Industrial fiberoptic repeaters/media
converters
ODW-600 Ex series 3650-5xxx
is in conformity with the following EC directive(s).
No Short name
2004/108/EC Electromagnetic Compatibility (EMC)
94/9/EC Equipment Explosive Atmospheres (ATEX)
References of standards applied for this EC declaration of conformity.
No Title Issue
EN 61000-6-1 Electromagnetic compatibility – Immunity for residential environments 2007
EN 61000-6-2 Electromagnetic compatibility – Immunity for industrial environments 2005
EN 61000-6-3 Electromagnetic compatibility – Emission for residential environments 2007
EN 61000-6-4 Electromagnetic compatibility – Emission for industrial environments 2007
EN 55022 Information technology equipment – Emission 2006
+A1:2007
EN 55024 Information technology equipment – Immunity 1998
+A1:2001
+A2:2003
EN 50121-4 Railway applications – Electromagnetic compatibility – Emission and
immunity of the signalling and telecommunications apparatus
2006
EN 60079-0
Explosive atmospheres
Equipment – General requirements
2009
EN 60079-15
Electrical apparatus for explosive gas atmospheres –
Construction, test and marking of type of protection “n” electrical
apparatus
2005
The last two digits of the year in which the CE marking was affixed: 10
Pierre Öberg
Technical Manager
17th December 2010
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Type tests and environmental conditions
Electromagnetic Compatibility
Phenomena Test Description Level
ESD EN 61000-4-2 Enclosure contact ± 6 kV
RF field AM modulated IEC 61000-4-3 Enclosure 10 V/m 80% AM (1 kHz), 80 – 800 MHz
RF field 900 MHz ENV 50204 Enclosure 20 V/m pulse modulated 200 Hz, 900 ± 5 MHz
Fast transient EN 61000-4-4 Signal ports ± 2 kV
Surge EN 61000-4-5 Signal ports unbalanced ± 2 kV line to earth, ± 2 kV line to line
RF conducted EN 61000-4-6 Signal ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz
Pulse Magnetic field EN 61000-4-9 Enclosure 300 A/m, 6.4 / 16 μs pulse
Voltage dips
and interruption
Mains freq. 50 Hz EN 61000-4-16 Signal ports 100 V 50 Hz line to earth
Mains freq. 50 Hz SS 436 15 03 Signal ports 250 V 50 Hz line to line
Radiated emission EN 55022 Enclosure Class B
Conducted emission EN 55022 AC power ports Class B
Dielectric strength EN 60950 Signal port to all other
Environmental
Temperature Operating –40 to +70°C
Humidity Operating 5 to 95% relative humidity
Altitude Operating 2 000 m / 70 kPa
Service life Operating 10 year
Vibration IEC 60068-2-6 Operating 7.5 mm, 5 – 8 Hz
Shock IEC 60068-2-27 Operating 15 g, 11 ms
Packaging
Enclosure, ODW-641 UL 94 PC / ABS Flammability class V-1
Enclosure, ODW-641 EX Cabelec 6141
Dimension W x H x D 35 x 121 x 119 mm
Weight 0.26 kg
Degree of protection IP 21
Cooling IEC 529 Enclosure Convection
Mounting Horizontal on 35 mm DIN-rail
EN 61000-4-11 AC power ports 10 & 5 000 ms, interruption
FCC part 15 Class A
FCC part 15 AC power ports Class B
EN 55022 DC power ports Class A
Enclosure air ± 8 kV
20 V/m 80% AM (1 kHz), 800 – 1000 MHz
20 V/m 80% AM (1 kHz), 1400 – 2700 MHz
Power ports ± 2 kV
Signal ports balanced ± 2 kV line to earth, ± 1 kV line to line
Power ports ± 2 kV line to earth, ± 2 kV line to line
Power ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz
200 ms, 40% residual voltage
500 ms, 70% residual voltage
isolated ports
Power port to other
isolated ports
Storage & Transport –40 to +70°C
Maximum surface
temperature
Storage & Transport 5 to 95% relative humidity
2 kVrms 50 Hz 1min
3 kVrms 50 Hz 1min
2 kVrms 50 Hz 1min (@ rated power < 60V)
135ºC (temperature class T4)
2 g, 8 – 500 Hz
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Functional description
Internal Electronics
COM
COM
+VA
O
V
P
+VB
C
NO
NC
STATUS
POWER
LED’s
O
V
P
O
C
P
RxD/TxD - P
RxD/TxD - N
SHIELD
PROFIBUS DP
CH 1
SFP
Fibre transceive
r
Switches
OVP Over Voltage Protection
OCP Over Current Protection
Converter PROFIBUS DP – optical fibre
ODW-641 is a fibre optic modem that converts between electrical PROFIBUS DP and a
fibre optical link.
Repeater – optical fibre links
ODW-641 is a fibre optic repeater that repeats received data from one fibre link out to
the other link. This is useful e.g. for long distance communication, where electromagnetic
interference may occur or when isolation of the electrical network is needed. The maximum optical fibre distance depends on selected fibre transceiver and fibre type.
Distances up to 80 km (50 miles) are available.
Data rate up to 12 Mbit/s
ODW-641 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-641 converter.
Automatic data rate detection
The PROFIBUS data rate is set automatically as soon as the ODW-641 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.
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Interface specifications
Power
Rated voltage ODW-641: 12 to 48 VDC and 24 VAC
Operating voltage ODW-641: 10 to 60 VDC and 20 to 30 VAC
Rated current 300 mA @ 12 VDC
Rated frequency ODW-641: DC and 48 to 62 Hz
2
Inrush current I
t 0.2 A2s
Startup current* 1.0 Apeak
Polarity Reverse polarity protected
Redundant power input Yes
Isolation to PROFIBUS DP and Status port
Connection Detachable screw terminal
Connector size 0.2 – 2.5 mm
Shielded cable Not required
* 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 mm
ODW-641 Ex: 12 to 48 VDC
ODW-641 Ex: 10 to 60 VDC
150 mA @ 24 VDC
75 mA @ 48 VDC
ODW-641 Ex: DC
2
(AWG 24 – 12)
2
(AWG 24 – 12)
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6650-2291
FX (Fibre) SM-LC80 SM-LC40 SM-LC15 MM-LC2
Fibre connector LC duplex LC duplex LC duplex LC duplex
Fibre type Singlemode
9/125 μm
Singlemode
9/125 μm
Singlemode
9/125 μm
Multimode
62.5/125 and
50/125 μm
Wavelength 1550 nm 1310 nm 1310 nm 1310 nm
Transmitter
Output optical power min/max
Receiver
Input sensitivity
Receiver
Input optical power Maximum
–5/0 dBm **–5/0 dBm **–15/–8 dBm **–20/–14 dBm
*
–34 dBm
(max)
–5 dBm
(min) ***
–34 dBm
(max)
–3 dBm
(min) ***
–31 dBm
(max)
–8 dBm
(min)
–31 dBm
(max)
–8 dBm
(min)
Optical power budget, worst case 29 dB 29 dB 16 dB 11 dB
Bit error rate (BER) <1 x 10
–10
<1 x 10
–10
<1 x 10
–10
<2.5 x 10
–10
Transceiver type Small Form Factor Pluggable (SFP)
Multi-Sourcing Agreement (MSA) compliant
Laser class Class 1, IEC 825-1 Accessible Emission Limit (AEL)
* Output power is power coupled into a 62.5/125 μm multimode fibre.
** Output power is power coupled into a 9/125 μm singlemode fibre.
*** The optical power should be reduced by at least 5 dB (SM-LC80)
or 3dB (SM-LC80) between the optical output and input.
Optical Power Budget
The maximum supported link lengths as specified in the table above should only been
seen as indicative. The allowed link length is calculated from the Optical Power Budget
(OPB), (the available optical power for a fibre-optic link), and the attenuation of the fibre,
comprising losses due to in-line connectors, splices, optical switches and a margin for link
aging (typical 1.5 dB for 1300 nm).
The worst-case Optical Power Budget (OPB) in dB for a fibre-optic link is determined
by the difference between the minimum transmitter output optical power and the lowest
receiver sensitivity.
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
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6650-2291
Connections
LED Indicators
(for details
see page 15)
FX(Fibre)
(for details
see page 13)
DIP-switches accessible under lid
(for details see page 16–17)
Status
screw terminal
3-position Direction Description
No. 1 NO Contact with
No. 2 C Common
No. 3 NC Open (no con-
C when fibre
link is in
operation
tact with C)
when fibre link
is in operation
PROFIBUS DP
(RS-485)
D-sub
9-position Direction Description
No. 1 – –
No. 2 – –
No. 3 In/Out RxD/TxD-P
No. 4 Out CNTR-P
No. 5 – DGND
No. 6 Out VP
No. 7 – –
No. 8 In/Out RxD/TxD-N
Power
screw terminal
4-position marking Description
No. 1 –Voltage
No. 2 +Voltage A
No. 3 +Voltage B
No. 4 –Votage
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6650-2291
LED Indicators
LED Status Description
PWR
Power
BA
Bus active
CH 2 Not used
CH 1
Channel 1 link status
DPR
Receive PROFIBUS DP
FR
Receive fibre link
FL R
Failure link remote
FL L
Failure link local
* N.B. Only valid if used togheter with ODW-642 units in a multidrop network.
ON Power is on.
Flashing Unit configured as ring master
(DIP-switch S2:3 is ON).
OFF Power is off.
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.
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.
Flash Data received on the electrical
interface and transmitted out on
the optical interface.
OFF No data received on the electrical
interface.
Flash Data received on the optical interface
and transmitted out on the electrical
interface.
OFF No data received on the optical
interface.
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.
ON Local fibre link failure. A fibre link is
out of operation.
Flashing Hardware error or invalid configura-
tion.
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DIP-switch settings
!
Before setting DIP-switches:
Prevent damage to internal electronics from electrostatic discharges (ESD)
by discharging your body to a grounding point (e.g. use of wrist strap).
S2S1
S2 DIP-switch
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Multidrop or redundant
ring slave unit.
N/A for ODW-641
Multidrop end unit. E.g. the first or
last unit in a multidrop network.
Always "ON" for ODW-641
Redundant ring master unit.
Only one master unit allowed
in a ring. N/A for ODW-641
65535 t
interruption in receiving
bit
frames, until inactive BA
.
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
* See section “About the automatic data rate detection”
on page 11 for a more detailed description.
5 seconds interruption in receiving
frames, until inactive BA
10 seconds interruption in receiving
frames, until inactive BA
20 seconds interruption in receiving
frames, until inactive BA
*
.
*
.
*
.
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6650-2291
S1
DIP-switch
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
S2
DIP-switch
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
Description
1 faulty frame before data rate seen as unidentified*.
S1: No extended retry limit.
2 faulty frames before data rate seen as unidentified*.
S1: No extended retry limit.
3 faulty frames before data rate seen as unidentified*.
S1: No extended retry limit.
4 faulty frames before data rate seen as unidentified*.
S1: No extended retry limit.
5 faulty frames before data rate seen as unidentified*.
S1: No extended retry limit.
6 faulty frames before data rate seen as unidentified*.
S1: No extended retry limit.
7 faulty frames before data rate seen as unidentified*.
S1: No extended retry limit.
8 faulty frames before data rate seen as unidentified*.
S1: No extended retry limit.
31 faulty frames before data rate seen as unidentified*.
S1: Extended retry limit.
63 faulty frames before data rate seen as unidentified*.
S1: Extended retry limit.
127 faulty frames before data rate seen as unidentified*.
S1: Extended retry limit.
255 faulty frames before data rate seen as unidentified*.
S1: Extended retry limit.
Set status port at local fibre link (FL L) error only.
Only applicable if used togheter with ODW-642 units in a multidrop
network.
Factory default
* See section “About the automatic data rate detection” on page 11 for a more detailed description.
Page 18
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Start up guide
POWER CH 1
COM +VA +VB COM
POWER CH 1
COM +VA +VB COMTX RX TX RX
Follow the steps below to get the unit up and running in a simple application.
PROFIBUS DP PROFIBUS DP
PROFIBUS DP master
PROFIBUS DP slave
Fibre Optic
… 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-611 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-641 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 page 21 “Calculating system
processing delay” for more information on how to determine the overall system
delay time.
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LED indication under normal operation
ODW-641
RX1
TX1
PROFIBUS
Slave
ODW-641
TX1
RX1
PROFIBUS
Master (PLC)
Data from the PROFIBUS master is received at the ODW-641 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-641 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.
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LED indication faulty condition
ODW-641 ODW-641
FL L LED
is on
CH 1 LED
is off
Faulty
fibre
TX1
RX1
RX1
TX1
PROFIBUS
Master
PROFIBUS
Slave
FL L LED
is on
CH 1 LED
is flashing
ODW-641 ODW-641
FL L LED
is on
CH 1 LED
is off
Faulty
fibres
TX1
RX1
RX1
TX1
PROFIBUS
Master
PROFIBUS
Slave
FL L LED
is on
CH 1 LED
is flashing
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-641 that is still sensing optical power will indicate this by
flashing the CH1 LED.
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.
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Calculating system processing delay
Data exchange between a PROFIBUS DP master and slave via ODW-641 fibre optic link,
will be delayed due to the length of the optical fibre and the signal processing within the
ODW-641. 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-641 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.
1. Fibre: The total optical fibre length delay.
40 x 5 μs = 200 μs
2. Converter electrical to fibre: Signal processing delay
(ODW-641 connected to PROFIBUS DP master).
9 tbit + 1 μs = 9 x 0.083 μs + 1 μs ≈ 1.1 μs
3. Converter fibre to electrical: Signal processing delay
(ODW-641 connected to addressed slave).
0.3 μs
4. 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
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About the interfaces
Power
The power terminal has two independent inputs, +VA and +VB, allowing redundant
power input. The ODW-641 power supply is galvanically isolated from all other interfaces.
Optical fibre interfaces
ODW-641 uses Small Form Factor Pluggable (SFP) transceivers. This means that a wide
range of different fibre transceivers and connectors can be used (see page 13).
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-641 togheter with
ODW-642 in a multidrop network.
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About the automatic data rate detection
ODW-641 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.
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Mounting
CLICK!
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.
10 mm *
(0.4 inches)
25 mm
* Spacing (left/right) recommended for
full operating temperature range
Removal
Press down the black support at the top of the unit. See figure.
25 mm
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Westermo Teleindustri AB • SE-640 40 Stora Sundby, Sweden
Phone +46 16 42 80 00 Fax +46 16 42 80 01
E-mail: info@westermo.se
Westermo Web site: www.westermo.com
Subsidiaries
Westermo Data Communications AB
Svalgången 1
SE-724 81 Västerås, Sweden
Phone: +46 (0)21 548 08 00 • Fax: +46 (0)21 35 18 50
info.sverige@westermo.se
Westermo Data Communications Ltd
Talisman Business Centre • Duncan Road
Park Gate, Southampton • SO31 7GA
Phone: +44(0)1489 580-585 • Fax.:+44(0)1489 580586
E-Mail: sales@westermo.co.uk
Westermo Data Communications GmbH
Goethestraße 67, 68753 Waghäusel
Tel.: +49(0)7254-95400-0 • Fax.:+49(0)7254-95400-9
E-Mail: info@westermo.de
Westermo Data Communications S.A.R.L.
9 Chemin de Chilly 91160 CHAMPLAN
Tél : +33 1 69 10 21 00 • Fax : +33 1 69 10 21 01
E-mail : infos@westermo.fr
Westermo Data Communications Pte Ltd
2 Soon Wing Road #08-05
Soon Wing Industrial Building
Singapore 347893
Phone +65 6743 9801 • Fax +65 6745 0670
E-Mail: sales@westermo.com.sg
Westermo Teleindustri AB have distributors in several countries, contact us for further information.
REV.A 6650-2291 2010.12 Westermo Teleindustri AB, Sweden
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