Westermo LD-64F User Manual

Redundant linjedelare

Optisk fiber – RS-422/485

Redundant line splitter

Fibre-optic – RS-422/485

Redundanter Glasfaser Leitungsteiler

– RS-422/485

INSTALLATIONSANVISNING

INSTALLATION MANUAL

INSTALLATIONS ANLEITUNG

6073-2011

www.westermo.se

LD-64F

©

Westermo Teleindustri AB • 2001 • REV. C

Galvanic Isolation

Transient

Protection

Balanced

Transmission

CE

Approved

12 6073-2001

LEDs for indication on LD-64F

• PWR: Indicates that the converter has power.

• TD: Indicates that the converter is receiving data on RS-422/485 side.

• RD: Indicates that the converter is sending data on RS-422/485 side.

• Rx1: Indicates received data on fiber channel 1.

• Rx2: Indicates received data on fiber channel 2.

• Tx1: Indicates that the converter is sending data on fiber channel 1 from RS-422/485 side.

• Tx2: Indicates that the converter is sending data on fiber channel 2 from RS-422/485 side.

Specifications LD-64F

Transmission Asynchronous*, full/half duplex or simplex Interface 1 EIA RS-422/RS-485/ITU-T V.11

5-position screw block

Interface 2 4 ST-connectors, see table of power budget Data rate 500 kbit/s – 1.5 Mbit/s Indicators Power, TD, RD, TX1, TX2, RX1, RX2 Temperature range 5–50°C, ambient temperature Humidity 0–95% RH without condensation Dimension 55x100x128 mm (WxHxD) Weight 0.6 kg AC / 0.3 kg DC Mounting On 35 mm DIN-rail Power supply alternatives

Model description

LD-64F LD-64F LD-64F LD-64F LD-64F AC 115V AC DC 36–55V DC 110V DC

Power supply 230 V AC 115 V AC 24 V DC 48 V DC 110 V DC/80 V AC

+15/–10% +15/–10% +50/–50% +15/–25% +10/–10% Frequency 48–62 Hz 48–62 Hz – – –/48–62 Hz Fuse, F2 100 mA S 100 mA S 1.6 A S 1.6 A S 1 A T/1 A T

5x20 mm 5x20 mm 5x20 mm 5x20 mm –/–

Littelfuse Littelfuse Littelfuse Littelfuse Wickmann Power consumption 25 mA 50 mA 3 W 3 W 30 mA Transient protection

Power/Line Yes/– Yes/– –/– –/– Yes/–

Isolation RMS

Power supply 3 000 V 3 000 V 1 500 V 1 500 V 3 000 V

* Synchronous protocols can be transmitted under certain circumstances.

See ”selection of bits” page 17.

136073-2001

Description LD-64F

LD-64F offers redundant fibre optic communication on RS-422/485 in a multi-drop network. LD-64F is a high-speed version of LD-64 and data rates from 500 kbit/s up to 1.5 Mbit/s is possible.

Both multi mode and single mode fibre versions are available. All fibre optic connections are of the ST-type. Plastic fibre can be used for very short distances (<20 meters). The maximum transmission distance is calculated from the available power budget of the modems and the attenuation of the cable, splice joints and connectors. Distances up to 25 km can be reached using single mode fibres.

The LD-64F is arranged in a master slave configuration with the fibre both starting and finishing at the master unit. Only one master can be configured on a loop at any time. There are two F/O channels on each unit, each with a separate transmitter and receiver. The front cover has 7 LED’s to indicate the state of the various communication paths.

The LD-64F is equipped with a redundant logic system which will control the flow of the data during fault conditions. If a break is detected on a fibre or a pair of fibres the data will be re-routed through channel 2. This operation will take approximately 4 ms. All data in this 4 ms will be lost and will need to be resent.

As with all other Westermo products the LD-64F provides a high level of galvanic isolation on the power supply side through transformers and also on the alarm side through optocouplers.

All the operating parameters are set-up via DIP switches located under the lid on the top of the unit.

Indication and alarm outputs are provided at the master and at the slaves either side of the fault. the indication and alarm outputs will continue to operate as long as the fault persists.

The LD-64F is available in a variety of supply voltage in both AC and DC.

14 6073-2011

Description of redundancy

LD-64F is connected through two parallel fibre optical rings, ring 1 and ring 2. The ring topology introduces the possibility for the units to handle a fault on a fibre or a fibre pair and still maintain communication. The units will automatically change the communication path when a fault is detected. This change can take up to 4ms and all data sent during this time needs to be resent since the modems do not have any possibility to databuffer.

One modem in the ring needs to be configured as master through switches inside the unit. The master controls the data and prevents data to be resent through the ring. The master is also used for monitoring of the fibre rings since all faults detected in the rings will be sent to the master. This gives possibility to monitor the complete system through the master unit. The other modems in the ring needs to be configured as slaves and will be transparent during normal communication.

LD-64F is equipped with alarm signals which is used for indication of fibre interruptions. Each unit is equipped with two alarm ports, one for each fibre channel. These ports are marked as CE1 and CE2 on the unit. A fault will close the circuit between indications “C” and “E” on respective port. The alarm outputs can for example be used for connection of an external relay. See connections and examples on page 19–20.

An interruption will be detected by the closest unit which will indicate a receiver alarm and also send the error further to the master unit which will indicate a corresponding fault for the ring.

For correct function the fibre optic rings needs to be connected correct between each modem

Ring 1: Tx1 – Rx2 – Tx1 – Rx2 etc. Ring 2: Tx2 – Rx1 – Tx2 – Rx1 etc.

156073-2011

Below follows a number of different fault situations which shows the different alarm outputs.

The receiver Rx2 at the master modem detects an interruption on ring 1. Alarm output CE1 indicates at the master unit.

The receiver Rx2 on slave modem 3 detects an interruption on ring 1. Alarm signal CE1 indicates at slave modem 3 and also at the master unit.

Link 1

Link 2

CE1

CE2

CE1

CE2

CE1

CE2

CE1

CE2

x

LD-64 Slave 1 LD-64 Master LD-64 Slave 2 LD-64 Slave 3

Link 1

Link 2

CE1

CE2

CE1

CE2

CE1

CE2

CE1

CE2

x

LD-64 Slave 1 LD-64 Master LD-64 Slave 2 LD-64 Slave 3

The receiver Rx1 on slave modem 3 detects an interruption on ring 2. Alarm signal CE2 indicates at slave modem 3 and also at the master unit.

Link 1

Link 2

CE1

CE2

CE1

CE2

CE1

CE2

CE1

CE2

x

LD-64 Slave 1 LD-64 Master LD-64 Slave 2 LD-64 Slave 3

Slave modem 3 stops working due to lack of power or other reason. Receiver Rx2 on slave modem 1 and receiver Rx1 on slave modem 2 detects interruptions. Alarm signal CE1 indicates on slave modem 1 and CE2 indicates on slave modem 2. Both CE1 and CE2 indicates on master modem.

Link 1

Link 2

CE1

CE2

CE1

CE2

CE1

CE2

CE1

CE2

LD-64 Slave 1 LD-64 Master LD-64 Slave 2 LD-64 Slave 3

The receiver Rx1 on slave modem 3 and receiver Rx2 on slave modem 1 detects interruptions. Alarm signal CE2 indicates on slave modem 3 and CE1 indicates on slave modem 1. Both CE1 and CE2 indicates at the master unit.

Link 1

Link 2

CE1

CE2

CE1

CE2

CE1

CE2

CE1

CE2

x

LD-64 Slave 1 LD-64 Master LD-64 Slave 2 LD-64 Slave 3

16 6073-2011

50/125 µm 3.0 dB/km 1.0 dB/km

62.5/125 µm 3.5 dB/km 1.2 dB/km 100/140 µm 4.0 dB/km 9/125 µm 0.5 dB/km

Fibre

Attenuation

at 820 nm

Attenuation

at 1300 nm

Attenuation

at single mode (1300 nm)

Attenuation in fibre cable

The values below can differ depending on quality and manufacturer of the fibre-optic cable.

Attenuation in connectors Attenuation in splice

0.2–0.4 dB Fusion 0.1 dB Mecanical 0.2 dB

50/125 16.6 dB 14.6 dB

62.5/125 18.6 dB 15.1 dB 100/140 25.9 dB

9/125 12.3 dB

50/125 10.7 dB 8.1 dB

62.5/125 14.5 dB 11.6 dB 100/140 20.6 dB

9/125 6.3 dB

Unit

820 nm 1300 nm single mode

Unit

820 nm 1300 nm single mode

Min. budget Typ. budget

Power budget

”Min. budget” states the minimum guaranteed power budget. Experience shows however that the typical value is in the range of the indicated ”Typ. budget”.

Fibre

176073-2011

••• •

•• • •

•••

••• •

•••

10 10 10 11 11 119

Supervision table when selecting data bits

7 bits 8 bits

No parity

Parity

1 stop bit

2 stop bits

Number of bits

Turning Time / Data rate /

Connected units

S1

ON

123456789

S1

ON

123456789

S1

ON

123456789

S1

ON

123456789

20

Number**

of units

20

Selection of 2- or 4-wire

4-wire

S1

ON

123456789

2-wire

S1

ON

123456789

Selection of Master/Slave

Master

S1

ON

123456789

Slave

S1

ON

123456789

Selection of bits

9

S1

ON

123456789

10

S1

ON

123456789

11

S1

ON

123456789

*

S1

ON

123456789

2-wire RS-485 or 4-wire RS-422.

Switch settings LD-64F

0.7 µs 1.5 Mbit/s

Turning-

time

Transmission*

rate

0.8 µs 1.2 Mbit/s

1 µs 1.0 Mbit/s

2 µs 500 kbit/s

* Use this setting for synchronous or other

asynchronous protocols. The transmitter will be active from the startbit to 10 bit-times after the last high databit.

Please note that only one master can be used per system.

*) For other speeds please contact Westermo **) Number of units is depending on the data rate and the total

system. "Number of units" means a typical value that can be changed depending on the structure of the total system.

S1:3, 6 and 7 is not used.

ON

12345

ON

12345

ON

12345

18 6073-2011

Termination with fail-safe

Termination (2-wire)

S2

Termination (4-wire)

S2

No termination

S2

Transmitted power channel 1

Low

S2

High

S2

Transmitted power channel 2

Low

S3: 2–4 not used

The fail-safe function forces the signal state of the receiver to OFF when the connected transmitter is in tri-state (transmitter inactive). The receiver located furthest away shall be terminated.

S3

High

S3

ON

1234

ON

1234

S1:1-9

ON

12345

ON

12345

Factory settings

S1

ON

123456789

S3

ON

1234

S2

ON

12345

S3:4-1

S2:1-5

1 2

3 4

5 6

7 8 9

196073-2011

Connections LD-64F

Line connection

(5-position screw-terminal)

Direction Connection ITU-T V.11

nr. Description Receiver 1 A’ (R+) Receiver 2 B’ (R–) Transmitter 3 A (T+) Transmitter 4 B (T–)

5 Shield

Power connection LD-64F DC

2-position screw-terminal

Screw Power-

no. supply

1 – Voltage 2 + Voltage

Power connection LD-64F AC

(3-position screw-terminal)

Connection

Power supply

L 115*/230 V

N AC power

PE/Protective Earth

* LD-64F 115 V

Power connection LD-64F 110V DC

(3-position screw-terminal)

Connection

Power supply

L + Voltage

N – Voltage

Not connected

The definations R+/R–, T+/T– can be various between different manufactures.

Alarm signals

Upon failure the circuit between the contacts ”C” and ”E” is closed. This circuit can be used to generate an external alarm signal by connecting an external relay as shown on page 20. Please note that the maximum allow voltage/current is 30 V/80 mA.

TD RD C EPWR

LD-64

RS-422/485 POWER

R+

R- T+ T-

12345 LN

Ch1

OPTO LINK MONITOR

Rx1

Rx2

Tx1

Tx2

CE

Ch2

20 6073-2001

Fibre optic connection

12345 LN

RS-422/485 POWER

R+

Rx2

Tx1

Tx2

R- T+ T-

12345 LN

RS-422/485 POWER

R+

Rx2

Tx1

Tx2

R- T+ T-

R

+

RS-422

equipment

R

–

T+T

–

RS-485

equipment

T

+T–

*) The designations T+, T–, R+, R– are not standardised and may vary between different

manufactures. The first step in fault finding is to reverse the cables (swap T+ with T– and/or R+ with R–). Please note that this should be done only at one end!

**

LD-64F

RX1 RX2

TX2

TX1

RX1 RX2

TX2

TX1

LD-64F LD-64F

RX1 RX2

TX2

TX1

RS-422/485 RS-422/485 RS-422/485

Line connection

The alarm connection can for example be used to control an external relay.

Alarm connections (Opto Link Monitor)

Upon failure the circuit between the contacts C and E is closed. Please note that the maximum allowed voltage/current is 30 V/80 mA.

In this example only channel 2 is connected. Under normal operation channel 1 and channel 2 should be connected.

LD-64

Rx1

Rx2

TD RD C EPWR

OPTO LINK MONITOR

Ch1

CE

Ch2

Max 30 V, 80 mA

Relay

+

–

216073-2001

OWN COMMENTS

.....................................................................................................................................................................................................................

6073-2011 01-09 Mälartryck AB, Eskilstuna, Sweden

CHANNEL 3

PWR

RD

TD

DCD2

DCD3

DCD4

CHANNEL 2 POWER

12-36V DC

12345

- +

R+ R- T+ T-

CHANNEL 4

123456789123456789

R+ R- T+ T- T+ T- R+ R-

CHANNEL 3

PWR

RD

TD

DCD2

DCD3

DCD4

CHANNEL 2 POWER

12-36V DC

12345

- +

R+ R- T+ T-

CHANNEL 4

123456789123456789

R+ R- T+ T- T+ T- R+ R-

CHANNEL 3

PWR

RD

TD

DCD2

DCD3

DCD4

CHANNEL 2 POWER

12-36V DC

12345

- +

R+ R- T+ T-

CHANNEL 4

123456789123456789

R+ R- T+ T- T+ T- R+ R-

CHANNEL 3

PWR

RD

TD

DCD2

DCD3

DCD4

CHANNEL 2 POWER

12-36V DC

12345

- +

R+ R- T+ T-

CHANNEL 4

123456789123456789

R+ R- T+ T- T+ T- R+ R-

Application example

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 • W estermo W eb site: www.westermo .se

Westermo Teleindustri AB have distributor s in several countries, contact us for further information.

Westermo Data Communications Ltd Unit 14 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 • Web:www.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 • Web: www.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 • Site WEB:www.westermo.fr

Subsidiaries

Westermo LD-64F User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual