INSTALLATIONSANVISNING INSTALLATION MANUAL INSTALLATIONS ANLEITUNG MD-42 AC MD-42 DC

Transcription

1 MD- AC MD- DC INSTALLATISANVISNING INSTALLATI MANUAL INSTALLATIS ANLEITUNG Galvanic Isolation Transient Protection Balanced Transmission CE Approved Westermo Teleindustri AB 999 Rev. B Omvandlare RS- RS-/85 Converter RS- RS-/85 RS- RS-/85 Wandler

2 Specifications Transmission Interface Asynchronous, full/half duplex or simplex EIA RS--C/CCITT V., 9-position D-sub female / Screw-terminal Interface EIA RS-/RS-85/CCITT V. Data rate Up to 5. kbit/s Indicators Power, TD, RD, RTS, CTS, DCD Insulation Galvanic insulation with opto-coupler (data transmission) and transformer (supply) Insulation voltage 500V Overvoltage protection Mains: Breakdown voltage 0V at 0V AC and 0V at 5V AC* Interface : Breakdown voltage transmitter and receiver 7V Surge capacity 0.6 kw for ms Power supply 5V*/0VAC +5/ 0% 8 6Hz Fuse 00 ma fast 5x0 mm Power consumption Max VA at 5V*/0V AC Temperature range 5-50 C, ambient temperature Humidity 0 95% RH, non-condensing Dimensions 55x00x8 mm (BxHxD) Weight AC 0.5 kg, DC 0. kg Mounting At DIN-rail 5 mm * MD- 5V AC only Warning! Do not open connected unit PW TD RD RTS CTS DCD DT DS SG V/RS--C CNECTI MD- DC V/RS--C RS-/RS-85/V CVERTER :-6 :-6 LINE CNECTI R+ R- T+ T- 5 POWER -6V DC

3 Transmitter CTS-delay Transmitter Activated by CTS contolled by DCD contolled by RTS RTS RTS 0ms 0ms RTS RTS Selection of - or -wire -wire Always active Always low -wire Always active Factory settings Termination with fail-safe ) Termination (-wire) Termination (-wire) No termination ) 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. Switch settings The MD- can through different switch settings be adapted to a vareity of running conditions. To set switches, open the plastic case by removing the top cover. Selection of signal activating the transmitter Selection of signal controlling DCD Selection of CTS delay Selection of termination with fail-safe ) Selection of - or -wire communication

4 Connections MD- Line connection (5-Position screw-terminal) Direction No. Description Receiver A (R+) Receiver B (R ) Transmitter A (T+) Transmitter B (T ) 5 Shield The definations R+/R,T+/T can be various between different manufactures. Power connection (AC) (-position screw-terminal) Screw Power no. Supply N 5V*/0V L AC power PE/Protective Earth * MD- 5V only Terminal connection (DCE) (RS--C/V., 9-position D-sub, female/screw-terminal) Drection Pin no. Screwterminal Description I 8 0 TD/Transmitted Data O 7 0 RD/Received Data I RTS/Request To Send O CTS/Clear To Send O 6 07 DSR/Data Set Ready 5 9 & 0 SG/Signal Ground O 09 DCD/Data Carrier Detect I 08/ /Data Terminal Ready I = Input O = Output on MD- CCITT V. Circuit no. Line connection -wire -wire RS- MD- Twisted pairs equipment MD- Receiver A A Transmitter B B Twisted pairs Transmitter/ Transmitter A A Receiver A/A A/A Receiver B B B/B B/B Shield ) 5 Shield ) 5 RS-85 equipment Transmitter/ Receiver ) If shielded cable is used, connect the shield only at one end to avoid ground currents

5 Transmission range (interface ) Use twisted pair cable. Max transmission range 00 m. (cable specifications 0. mm and capacitance pf/m ). The transmission range will increase if a cable with lower capacitance and larger diameter is used. Use shielded cable in heavy industrial environments. MD- DC Specifications Power supply 6V DC Power consumption Max.W Insulation 500V Fuse F.6A fast 5x0 mm All other specifications according to MD- AC Switch settings According to MD- AC Connections According to MD- AC, except power supply Connection no. Power Supply Voltage + Voltage 65-00

6 Hints RS-/85 was designed for multidrop applications. When a system is installed it should form a bus structure (see diagrams). Star shaped networks should never be created, there are other Westermo products designed to work in star net applications. To correctly install, an RS-/85 network should be terminated at the correct points. The recommendation is to terminate the receiver on the master unit and the final bus slave unit. See diagrams for details of how this is done with RS-85 (-wire) and RS- (-wire). On -wire systems when the MD- is on a slave system, it s transmitter is linked to the same bus as all the other slave transmitters. A status signal RTS or is used to control the MD- s transmitter, to ensure only one slave is active on the bus at one time. The status signal is also used to control direction for RS-85 ( wire) transmission. If any problems do occur on set up of the MD-, the LED s will be helpful. PWR: The unit has power. RD: Data received on the RS-/85 interface. DCD: Simulated carrier due to the setting of. CTS: Follows RTS. RTS: Indicates that the RS-/85 transmitter is activated. TD: Data received on the RS-/V. interface

7 Max 00 metre and connections (A/A ) (B/B Max 0. metre Termination B/B A/A B/B A/A B/B A/A (A ) (B ) (A) (B) Termination B A B A B A B A Max 0. metre B A B A N.B. R+/R, T+/T definitations are not standard, it can help to shift A and B if the unit does not work

8 V./RS- Block diagram V./RS- RS-85 TD RTS DCD CTS ) V 5 DCD +5V 0mS 6 TD +5VB 0VB K 00R K 6 5 A B RD CTS RD RTS 0VB 5 A' B' Shield DSR SG D-sub housing 6 5 ) R +5V PWR 0V R +V +5V 0V -V Power supply PE F PE Volt Insulated power supply sel 5/ 0V PE +5VB 0VB ) R5 0VB ) 0 ½ resistor R5 is normally not mounted. ) Metal housing on D-sub is connected to PE if R is mounted. R = R on DC-model (normally mounted), R = R on AC-mod (normally not mounted). Westermo Teleindustri AB have distributors in several countries, contact us for further information. Westermo Teleindustri AB S-60 0 Stora Sundby, Sweden Phone Fax info@westermo.se Westermo Web site: Westermo Data Communications Ltd Solent Business Centre Millbrook Road West Millbrook, Southampton SO5 0HW Phone: +(0) Fax.:+(0) sales@westermo.co.uk Subsidiaries Westermo Data Communications GmbH Bruchsaler Straße 8, 6875 Waghäusel Tel.: +9(0) Fax.:+9(0) westermo.germany@t-online.de TunaTryck AB, Eskilstuna, Sweden