Westermo MA-67 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

6067-2001

www.westermo.se

MA-67

©

Westermo Teleindustri AB • 1998 • REV. A

Galvanic

Isolation

Transient

Protection

Balanced

TransmissionCEApproved

8 6067-2001

Specifications MA-67

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

CCITT V.11, 5-position screw-terminal

Interface 2 ST-connectors, see table of power budget
Surge protection Interface 1: transient protection,

flashover voltage for receiver and transmitter 7V.
Dissipation capability 0.6 kW for 1 ms.

Insulation 1500V rms isolation withstand voltage between

communication line and mains.

Power supply +20V DC ±25% (via PS-02)
Fuse 500 mA fast 5x20
Data rate 2.4 kbit/s up to 1,5 Mbit/s
Indicators Power, TD, RD
Power consumption Max 80 mA at 20V DC
Temperature range 5-50°C, ambient temperature
Humidity 0-95% RH without condesation
Dimension 100x100 mm
Weight 0.4 kg
Mounting I 19” rack RV-01, possible to mount

16 MA-67 in a RV-01

96067-2001

S1

F1

S2

TX

RX

S1 Selection of 2-or 4-wire

Selection of turning time/transmission rate
Selection of bits

S2 Selection of termination

Selection of transmitted power

F1 Fuse

MA-67

RX

RD

TD

PWR

TX

Description MA-67

The MA-67 allows RS-422/485 point to point communication over fibre optic multi
mode or single mode cables, at data rates up to 1.5 Mbit/s. Transmission distances up to
25 km (single mode) can be reached.

The MA-67 is designed to be mounted in the Westermo RV-01 and RV-01A racks.

Up to 16 units can be mounted in one rack.

Three LED’s are provided to indicate TX, RX and power. The fibre optic connection
are mounted on the front of the panel and are of the ST type. All other connections are
via the mother board of the RV-01 rack.