Westermo MD-63 User Manual

Omvandlare, optisk fiber

– RS-422/485/V.11

Converter, fibre-optic

– RS-422/485/V.11

Glasfaser Wandler

– RS-422/485/V.11

INSTALLATIONSANVISNING

INSTALLATION MANUAL

INSTALLATIONS ANLEITUNG

6071-2002

www.westermo.se

MD-63 AC

MD-63 DC

©

Westermo Teleindustri AB • 2000• REV. B

Galvanic
Isolation

Transient

Protection

Balanced

Transmission

CE

Approved

MD-63

8 6071-2002

Specifications MD-63

Transmission Asynchronous*, full/half duplex or simplex
Interface 1 EIA RS-422/485

CCITT V.11, 5-position detachable screw-terminal

Interface 2 ST-connectors, see table of power budget
Data rate Up to 1.5 Mbit/s
Indicators Power, TD, RD
Temperature range 5–50°C, ambient temperature
Humidity 0–95% RH without condensation
Dimensions 55x100x128 mm (WxHxD)
Weight 0.45 kg AC / 0.3 kg DC
Mounting On 35 mm DIN-rail
Power supply alternatives

Functional description MD-63

MD-63 is developed for RS-422/485 point to point communication via fibre optic cables.
Transmission rates up to 1.5 Mbit/s and transmission distances up to 25 km is possible.
The MD-63 consists of one F/O channel with separate transmitter and receiver, Tx and
Rx. On the front of the unit there are also three LED’s indicating the data transmission
on the channel. The fibre optical cable is completely immune to external interference,
which makes it ideal for harsh environments.

Model description

MD-63 MD-63 MD-63 MD-63
AC 115V AC DC 36–55V DC

Power supply 230V AC 115V AC 24V DC 48V DC

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

5x20 mm 5x20 mm 5x20 mm 5x20 mm

Littelfuse Littelfuse Littelfuse Littelfuse
Power consumption 5VA 5VA 3W 3W
Overvoltage protection 430V 220V – –
Isolation 1 500V 1 500V 500V 500V

RMS

* Synchronous protocols can be transmitted under certain circumstances.

See ”selection of bits” page 10.

96071-2002

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

Fibre