Westermo MD-63 B User Manual
Omvandlare Opto – RS-422/485/V.11
Converter Opto – RS-422/485/V.11
Glasfaser Wandler – RS-422/485/V.11
INSTALLATIONSANVISNING
INSTALLATION MANUAL
INSTALLATIONS ANLEITUNG
6071-2022
www.westermo.se
MD-63B AC
MD-63B DC
©
Westermo Teleindustri AB • 1999 • REV. B
Galvanic
Isolation
Transient
Protection
Balanced
TransmissionCEApproved
MD-63
8 6071-2022
Specifikations MD-63B
Transmission Synchronous, full/half duplex or simplex
Interface 1 EIA RS-422/RS-485
CCITT V.11, 5-position detachable screw-terminal
Interface 2 See table of power budget, ST-connectors
Surge protection Mains: breakdown voltage 430V at 230V AC
och 220 V vid 115V AC**
Interface 1: transient protection
flashover voltage for receiver and transmitter
7V. Dissipation capability 0.6 kW for 1 ms.
Power supply 115V*/230V AC
+15/–10% 48-62 Hz
12-36V DC**
Fuse 100 mA fast 5x20 mm
1.6 A fast 5x20 mm**
Data rate 500 kbit/s to 4 Mbit/s Manchester code***
Indicators Power, TD, RD
Power consumption Max 4 VA at 115V* and 230V AC. Max 3 W**
Temperature range 5-50°C, ambient temperature
Humidity 0-95% RH without condensation
Dimension 55x100x128 mm (WxHxD)
Weight 0.4 kg
Mounting On 35 mm DIN-rail
* MD-63B 115V only
** MD-63B DC only
*** For higher data rate, please contact Westermo.
Description MD-63B
MD-63B allows point to point communication and conversion between RS-422/485 and
fibre. The modem is developed for Manchester coded protocols with transmission rates
over 500 kbit/s. Transmission distances up to 25 km is possible. The modem consists of
one fibre channel with separate transmitter and receiver. On the front of the unit there
are five LED’s that indicates the data transmission on the channel.
96071-2022
Switch settings MD-63B
The MD-63B can through different switch settings be adapted to a variety of running
conditions. To set the switches,open the plastic case by removing the top cover.
Selection of 2- or 4-wire
S1 4-wire
ON
123456789
S1 2-wire
ON
123456789
Selection of speed
S1
Over 1 Mbit/s
ON
123456789
S1
Under 1 Mbit/s
ON
123456789
Factory settings
S1
ON
123456789
S1: 2 and 4-9 not used
Termination with fail-safe 1)
S2
ON
12345
Termination (2-wire)
S2
ON
12345
Termination (4-wire)
S2
ON
12345
No termination
Transmitted power
S2
ON
12345
Low
S2
ON
12345
High
S2
ON
12345
1) 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.
123456789
TD RDPWR
MD-63
Rx
Tx
RS-422/485 POWER
R+
R- T+ T-
12345 LN
S1:1-9
S2:1-5
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