INSTALLATIONSANVISNING INSTALLATION MANUAL INSTALLATIONS ANLEITUNG MD-62 AC MD-62 DC

Transcription

1 MD- AC MD- DC INSTALLATISANVISNING INSTALLATI MANUAL INSTALLATIS ANLEITUNG Galvanic Isolation Transient Protection CE Approved Westermo Teleindustri AB 000 Rev. B Omvandlare, optisk fiber RS-/V. Converter, fibre-optic RS-/V. Glasfaser Wandler RS-/V.

2 Specifications MD- Transmission Interface Interface Data rate Indicators Temperature range Humidity Dimension Weight Mounting Asynchronous, full/half duplex or simplex EIA RS-/CCITT V. -position D-sub connector female or -position detachable screw-terminal ST-connectors, see table of power budget Up to. kbit/s Power, TD, RD, RTS, CTS -0 C ambient temperature 0-% RH without condensation x00x mm ( WxHxD) 0. kg AC / 0. kg DC On mm DIN-rail Power supply alternatives Model description MD- MD- MD- MD- AC V AC DC V DC Power supply 0V AC V AC V DC V DC +/ 0% +/ 0% +0/ 0% +/ % Frequency Hz Hz Fuse, F 00mA S 00mA S.A S.A S x0 mm x0 mm x0 mm x0 mm Littelfuse Littelfuse Littelfuse Littelfuse Power consumption VA VA W W Overvoltage protection 0V 0V Isolation 00V 00V 00V 00V RMS Functional description MD- MD- is developed for RS- point to point communication via fibre optic cables. Transmission rates up to. kbit/s and transmission distances up to km is possible. The MD- 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

3 Power budget Min. budget Typ. budget Unit Unit Fibre 0 nm 00 nm single mode 0/ 0. db. db./. db. db 00/0 0. db /. db Fibre 0 nm 00 nm single mode 0/. db. db./. db. db 00/0. db /. db Min. budget states the minimum guaranteed power budget. Experience shows however that the typical value is in the range of the indicated Typ. budget. Attenuation in fibre cable The values below can differ depending on quality and manufacturer of the fibre-optic cable. Fibre Attenuation at 0 nm Attenuation at 00 nm Attenuation at single mode (00 nm) 0/ µm.0 db/km.0 db/km./ µm. db/km. db/km 00/0 µm.0 db/km / µm 0. db/km Attenuation in connectors Attenuation in splice db Fusion 0. db Mecanical 0. db 00-00

4 Switch settings MD- The MD- can, through switch settings, be set in to several modes. To set the switches, open the plastic case by removing the top cover. S:- S:- Status signal Transmitted power S Enabled S Low S Disabled S High Switch S: not used Switch S: not used Factory settings S S

5 Connections MD- Terminal connection (DCE) (RS--C/V., -position female D-sub connector or -position screw-terminal) Direction Pin Screw CCITT V. Description no. no. Circuit no. I 0 TD/Transmitted Data O 0 RD/Received Data I 0 RTS/Request To Send O 0 CTS/Clear To Send & 0 SG/Signal Ground I = Input O = Output on MD- Power connection MD- AC (-position screw-terminal) Power connection MD- DC (-position screw-terminal) Screw no. L N * MD- V Power supply */0V AC power PE/Protective Earth Connection Power no. Supply Voltage + Voltage Fibre optic connection TX MD- RX TX RX MD

6 Hints If any problems occur upon set-up of the MD-, the following notes may be helpful.. Power up the MD- and check that the PWR LED is lit.. Check the cable between your RS- interface and the RS- connection on the MD-. The RS- interface on the MD- is configured as DCE (Data Communication Equipment). Most printers, PCs and terminals are set as DTE (Data Terminal Equipment). See suggestions of cable configurations on the next side. How to check whether the equipment is DTE or DCE: Power up the unknown equipment and ensure that nothing is plugged into the RS- interface. Using a multi-meter, first measure the voltage on pin of the connector (male or female) with reference to ground on pin ( pole connector) or on pin ( pole connector, PC standard). Then measure the voltage on pin in the same way. The pin with the most negative voltage will be the output pin and will identify the device as DCE or DTE. pole connector RS--C If the most negative voltage is on pin : the device is DTE. If the most negative voltage is on pin : the device is DCE. pole connector,pc standard If the most negative voltage is on pin : the device is DTE. If the most negative voltage is on pin : the device is DCE.. The RS- cable is correct but it still does not work. The LEDs may be helpful. PWR: The unit has power RD: Data received from fibre interface TD: Data received from RS- interface RTS: RTS from RS- side CTS: Indicates RTS from RS- side on oppsite modem.. Test each individual modem. All switches in OFF state. Make sure that the mainspower socket is disconnected when the modem lid is off. A. Equipment required: a terminal or a PC with terminal program, an RS- cable according to point, and a fibre cable. B. Connect a cable between the modem and terminal, or PC with a terminal program. Connect the fibre cable between RX and TX. C. Press any key on the keyboard. During keystrokes, the TD and RD LED s should flash on the modem, simultaneously, the characters will be echoed on the monitor. D. If the fibre cable is removed from one port only, the TD LED will flash when a key is pressed, but no characters will appear on the screen. Repeat the same test with the second modem.. Testing the modems together. A. Leave the last tested modem in place, connected to the terminal or the PC (modem A). B. Connect two fibre cables between the modems RX (modem A) TX (modem B) and vice versa. C. Connect pins and of the RS- interface on modem B (top screw terminal, ). D. Continue according to point.c

7 00-00 MD- DCE DTE MD- DCE DCE MD- DCE pole (PC) 0 0

8 RS--C/V. Block diagram RTS S: Modulator S: High TX Low TD RD CTS De- Modulator RX SG 0V R ) PE VA 0V Power supply Isolated power supply VB 0V ) Jumper R normally not mounted Westermo Teleindustri AB have distributors in several countries, contact us for further information. Westermo Teleindustri AB S-0 0 Stora Sundby, Sweden Phone + 00 Fax info@westermo.se Westermo Web site: Westermo Data Communications Ltd Solent Business Centre Millbrook Road West Millbrook, Southampton SO 0HW Phone: +(0)0 0 Fax.:+(0)0 0 sales@westermo.co.uk Subsidiaries Westermo Data Communications GmbH Bruchsaler Straße, Waghäusel Tel.: +(0)-00-0 Fax.:+(0) westermo.germany@t-online.de Mälartryck AB, Eskilstuna, Sweden