Westermo MDW-45 HV Manual Download Page 1 | Manualshive

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www.westermo.com

MDW-45

Converter
RS-232 - RS-422/485

www.westermo.com

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Summary of Contents for MDW-45 HV

Page 1: ...www westermo com MDW 45 Converter RS 232 RS 422 485 www westermo com ...

Page 2: ...2 6617 2203 ...

Page 3: ...ility and fitness for a particular purpose are made in relation to the accuracy and reliability or contents of this document Westermo reserves the right to revise this document or withdraw it at any time without prior notice Under no circumstances shall Westermo be responsible for any loss of data or income or any special incidental and consequential or indirect damages howsoever caused More infor...

Page 4: ...a potentially hazardous situation Possible death or major injury Major damage to the product CAUTION Indicates a potentially hazardous situation Minor or moderate injury Moderate damage to the product NOTICE Provides information in order to avoid misuse of the product confusion or misunderstanding No personal injury Minor damage to the product NOTE Used for highlighting general but important infor...

Page 5: ... Prevent electrostatic discharge damages to internal electronic parts by discharging your body to a grounding point e g use a wrist strap WARNING PROTECTIVE FUSE The power supply wiring must be sufficiently fused It must be possible to disconnect manually from the power supply Ensure compliance to national installation regulations Product disposal This symbol means that the product shall not be tr...

Page 6: ... equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a partic ular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the...

Page 7: ... m 6 4 16 ms pulse Mains freq 50 Hz EN 61000 4 16 Signal ports 100 V 50 Hz Mains freq 50 Hz SS 436 15 03 Signal ports 250 V 50 Hz Radiated emission CISPR 22 Enclosure Class B FCC part 15 Class B Conducted emission CISPR 22 AC power ports Class B FCC part 15 AC power ports Class B CISPR 22 DC power ports Class B Dielectric strength Signal port to all other 2 kVrms 50 Hz 1min Power port to all other...

Page 8: ...can automatically control the state of the data bus based just on the data it receives This allows the unit to be used with equipment that has no handshaking signal The maximum transmission rate possible is 115 2 kbit s RS 422 485 RS 232 3 4 T A T B TD LED TD LED 3 TD CTS LED S2 4 F1 0V 5V 1 2 R A R B RTS CTS RD RD LED 7 8 2 B B 0V SG S1 6 DSR 6 5V 5 S2 2 S2 1 S2 3 Power supply Isolated power supp...

Page 9: ...5 mm AWG 24 12 RS 422 485 Electrical specification RS 485 Data rate 1 200 bit s 115 2 kbit s Data format 7 or 8 data bit Odd even or none parity 1 or 2 stop bit Connection Detachable screw terminal Connector size 0 2 2 5 mm AWG 24 12 Transmission range In accordance with EIA RS 485 1200 m depending on data rate and cable type Settings 120 Ω termination and failsafe biasing 680 Ω by DIP switch Prot...

Page 10: ... m from this port This earth ing point should have a low impedance con nection to the conductive enclosure of the apparatus cabinet or similar where the unit is built in This conductive enclosure should be connected to the earthing system of an installation and may be directly connected to the protective earth 4 position Direction Description No 1 In R A line RS 422 No 2 In R B line RS 422 No 3 In...

Page 11: ...ce TD ON Transmitted Data Displays data received from the local RS 232 port OFF No data RD ON Received Data Displays data leaving the modem on the RS 232 port OFF No data RTS ON Status of RTS from the RS 232 interface OFF No RTS CTS ON Status of CTS from the RS 232 interface OFF No CTS ...

Page 12: ...s control ON 1 2 3 4 5 6 7 8 Data control S1 ON 1 2 3 4 5 6 7 8 RTS control S1 ON 1 2 3 4 5 6 7 8 Transmitter always active S1 Selection of bus format ON 1 2 3 4 5 6 7 8 2 wire RS 485 S1 ON 1 2 3 4 5 6 7 8 4 wire RS 422 S1 ON 1 2 3 4 5 6 7 8 12 bit format S1 ON 1 2 3 4 5 6 7 8 19 2 kbit s S1 ON 1 2 3 4 5 6 7 8 38 4 kbit s S1 ON 1 2 3 4 5 6 7 8 57 6 kbit s S1 ON 1 2 3 4 5 6 7 8 115 2 kbit s S1 Supe...

Page 13: ... s data format 10 bit Bus format 2 wire No termination and fail safe Note Switch 1 8 is not used No termination and fail safe ON 1 2 3 4 Termination with fail safe 2 wire ON 1 2 3 4 Termination with fail safe 4 wire ON 1 2 3 4 ON 1 2 3 4 Note DIP switch alterations are only effective after a power on S1 S2 ...

Page 14: ...lts when there is no data on the RS 485 bus Full duplex is only possible if 4 wires are used Field of application RS 422 and RS 485 were both designed for multidrop applications When a system is installed it should always form a bus structure see diagrams Star shaped networks should never be created there are other Westermo products that can be used to create star net applications To install a sys...

Page 15: ...ield only at one end to avoid ground currents 4 wire MDW 45 RS 422 485 equipment RS 422 485 equipment Transmitter Receiver Transmitter Receiver Twisted pairs Twisted pairs Receiver Transmitter Transmitter Receiver R R T T T T R R T R T R T R T R 1 2 3 4 3 4 MDW 45 2 wire ...

Page 16: ...Westermo Metallverksgatan 6 SE 721 30 Västerås Sweden Tel 46 16 42 80 00 Fax 46 16 42 80 01 E mail info westermo com www westermo com REV G 6617 2203 2021 11 Westermo Network Technologies AB Sweden ...

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