Westermo MA-47 User Manual

Omvandlare, RS-232 – RS-422/485

Converter, RS-232 – RS-422/485

RS-232 – RS-422/485 Wandler

INSTALLATIONSANVISNING

INSTALLATION MANUAL

INSTALLATIONS ANLEITUNG

6047-2002

www.westermo.se

©

Westermo Teleindustri AB • 1999 • REV. A

Galvanic

Isolation

Transient

Protection

Balanced

TransmissionCEApproved

MA-47

96047-2002

Specifications MA-47

Transmission: Asynchronous, full/half duplex or simplex
Interface 1: EIA RS-232-C/CCITT V.24/V.28

25-position D-sub female, DCE

Interface 2: EIA RS-422/RS-485/CCITT V.11
Data rate: Up to 38.4 Kbit/s
Indicators: Power, RD, DCD, CTS, RTS, TD
Insulation: Galvanic insulation with opto-coupler

(data transmission) and transformer (supply)

Insulation voltage: 1500V
Overvoltage protection: Breakdown voltage transmitter and receiver 7V.

Surge capacity 0.6 kW for 1ms.

Power supply: External through PS-02 mounted in rack RV-01.

±20VDC ±20%

Fuse: 2 pcs 100 mA fast 5x20mm
Power consumption: +20V 70mA, –20V 45mA
Temperature range: 5–50°C, ambient temperature
Humidity: 0–95% RH, non-condensing
Dimensions: 100x100mm
Weight: 0.1 kg
Mounting: To be mounted in rack RV-01, takes one card slot.

10 6047-20021010

Selection of data rate

Selection of bits

ON

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ON

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ON

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ON

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ON

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ON

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ON

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ON

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ON

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ON

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ON

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ON

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S2 Selection of data rate

Selection of 2- or 4-wire transmission
Selection of no, of data bits
(see table below)

S3 Selection of termination

and fail-safe)

S2 300 bit/s

S2 600 bit/s

S2 1200 bit/s

S2 2400 bit/s

S2 4800 bit/s

S2 9600 bit/s

S2 19200 bit/s

S2 38400 bit/s

S2 9

S2 10

S2 11

S2 12

Switch settings

The MA-47 can through different switch settings be adapted to a variety of running conditions.

S2

1 – 9

S3

1 – 4

ON
OFF

ON
OFF