Converter, fibre-optic – RS-232/V.24
INSTALLATION MANUAL
6070-2281
www.westermo.se
MD-62H AC
MD-62H DC
©
Westermo Teleindustri AB • 2001 • Rev. A
Galvanic
Isolation
Transient
Protection
CE
Approved
2 6070-2001
Specifications MD-62H
Transmission Asynchronous, full/half duplex or simplex
Interface 1 EIA RS-232/ITU-T V.24 9-position D-sub connector
female or 9-position detachable screw-terminal
Interface 2 ST-connectors, see table of power budget
Data rate Up to 115.2 kbit/s
Indicators Power, TD, RD, RTS, CTS
Temperature range 5-50°C ambient temperature
Humidity 0-95% RH without condensation
Dimension 55x100x128 mm ( WxHxD)
Weight 0.4 kg AC / 0.25 kg DC
Mounting On 35 mm DIN-rail
Power supply alternatives
Model description
MD-62H MD-62H MD-62H MD-62H
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 48–62 Hz 48–62 Hz – –
Fuse, F2 100 mA S 100 mA S 1.6 A S 1.6 A S
5x20 mm 5x20 mm 5x20 mm 5x20 mm
Littelfuse Littelfuse Littelfuse Littelfuse
Power consumption 27 mA 54 mA 1.5 W 1.5 W
Overvoltage protection 430 V 220 V – –
Isolation 3 000 V 3 000 V 1 500 V 1 500 V
RMS
Functional description MD-62H
MD-64H is developed for RS-232/V.24 point to point or multidrop (with LD-63H)
communication via fibre optic cables.
The H-version is developed for data and status transmission in a multidrop network.
Transmission rates up to 115.2 kbit/s and transmission distances up to 25 km is possible.
The MD-62H 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.
36070-2001
Status signal disabled implies an active CTS to
the connected equipment.
Switch settings MD-62H
The MD-62H can, through switch settings, be set in to several modes.
To set the switches, open the plastic case by removing the top cover.
Status signal
Factory settings
S1 Disabled
ON
123456789
S1 Enabled
ON
123456789
S1
ON
123456789
S2
ON
12345
S2
ON
12345
Switch S1: 2–9 not used
Transmitted power
Low
S2
ON
12345
High
Switch S2: 1–4 not used
S1:1-9 S2:1-5
4 6070-2001
Screw Power
no. supply
L 115*/230V
N AC power
PE/Protective Earth
Connections MD-62H
Terminal connection (DCE)
(RS-232-C/V.24, 9-position female D-sub connector or 9-position screw-terminal)
Power connection
MD-62H AC
(3-position screw-terminal)
Power connection
MD-62H DC
(2-position screw-terminal)
* MD-62H 115V
Connection Power
no. Supply
1 – Voltage
2 + Voltage
Direction Pin Screw CCITT V.24 Description
no. no. Circuit no.
I 3 8 103 TD/Transmitted Data
O 2 7 104 RD/Received Data
I 7 6 105 RTS/Request To Send
O 8 5 106 CTS/Clear To Send
– 5 1 & 9 102 SG/Signal Ground
I = Input O = Output on MD-62H
Fibre optic connection
MD-62H
TX
RX
TX
RX
MD-62H
56070-2001
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
Mechanical 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
6 6070-2001
OWN COMMENTS
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6070-2281 01.02 Mälartryck AB, Eskilstuna, Sweden
Westermo Teleindustri AB • S-640 40 Stora Sundby, Sweden
Phone +46 16 612 00 Fax +46 16 611 80
E-mail: info@westermo.se • Westermo Web site: www.westermo.se
Westermo Teleindustri AB have distributors in several countries,
contact us for further information.
Westermo Data Communications GmbH
Bruchsaler Straße 18, 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 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
Subsidiaries
Application example
RS-232
MD-62H LD-63H LD-63H
RS-232 RS-232
Fibre Fibre
123456789123456789
R+ R- T+ T- T+ T- R+ R-
CHANNEL 3
CHANNEL 4
PWR
RD
TD
DCD2
DCD3
DCD4
CHANNEL 2 POWER
123456789123456789
R+ R- T+ T- T+ T- R+ R-
CHANNEL 3
CHANNEL 4
PWR
RD
TD
DCD2
DCD3
DCD4
CHANNEL 2 POWER
123456789123456789
R+ R- T+ T- T+ T- R+ R-
CHANNEL 3
PWR
RD
TD
DCD2
DCD3
DCD4
CHANNEL 2 POWER
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