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Summary of Contents for Westermo MDW-45 LV
- Page 1 MDW-45 Converter RS-232 - RS-422/485...
- Page 2 6617-2203...
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Page 3: General Information
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. -
Page 4: Safety And Regulations
Safety and Regulations Warning signs are provided to prevent personal injury and/or damages to the product. The following levels are used: Level of warning Description Consequence Consequence personal injury material damage Indicates a potentially Possible death or Major damage to the hazardous situation major injury product... - Page 5 Before installation: Read this manual completely and gather all information on the product. Make sure that you understand it fully. Check that your application does not exceed the safe operating specifications for this product. WARNING - SAFETY DURING INSTALLATION The product must be installed by qualified service personnel and built in to an apparatus cabinet or similar, where access is restricted to service personnel only.
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Page 6: Care Recommendations
If the product is used in a manner not according to specification, the protection provided by the equipment may be impaired. If the product is not working properly, contact the place of purchase, nearest Westermo distributor office or Westermo technical support. -
Page 7: Type Tests And Environmental Conditions
Type tests and environmental conditions Electromagnetic Compatibility Phenomena Test Description Level EN 61000-4-2 Enclosure contact ± 6 kV Enclosure air ± 8 kV RF field AM modulated IEC 61000-4-3 Enclosure 10 V/m 80% AM (1 kHz), 80 – 1 000 MHz 20 V/m 80% AM (1 kHz), 800 –... -
Page 8: Functional Description
Functional description The MDW-45 is an RS-422/485 to RS-232 converter. This device can be used in multid- rop and point to point applications to connect devices like PCs, PLCs, drives and other automation equipment. In 2-wire half duplex applications (RS-485) the MDW-45 can automatically control the state of the data bus based just on the data it receives. -
Page 9: Interface Specifications
Interface specifications Power MDW-45 LV MDW-45 HV Rated voltage 12 to 48 VDC 95 to 240 VAC 110 to 250 VDC Operating voltage 9.6 to 57.6 VDC 85.5 to 264 VAC 88 to 300 VDC Rated current 95 mA @ 12 VDC... - Page 10 Locations of Interface ports, LED`s and DIP-switches S1 DIP-switch under lid (for details see page 10) RS-422/485 interface screw terminal LED indicators (for details see page 8) 4-position Direction* Description No. 1 R+ (A') line RS-422 No. 2 R– (B') line RS-422 No.
- Page 11 LED Indicators Status Description In service Out of service Transmitted Data: Displays data received from the local RS-232 port No data Received Data: Displays data leaving the modem on the RS-232 port No data Status of RTS from the RS-232 interface No RTS Status of CTS from the RS-232 interface No CTS...
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Page 12: Dip Switch Settings
DIP-switch settings Before DIP-switch settings: Prevent damage to internal electronics from electrostatic discharges (ESD) by discharging your body to a grounding point (e.g. use of wrist strap). Selection of data rate Selection of data format 1200 bit/s 9 bit format* 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 2400 bit/s... -
Page 13: Factory Settings
S2 Below panel, RS-422/485 termination No termination and fail-safe 1 2 3 4 Termination with fail-safe (2-wire) 1 2 3 4 Termination with fail-safe (4-wire) 1 2 3 4 Note! DIP-switch alterations are only effective after a power on. Factory settings Data rate –... -
Page 14: Field Of Application
(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 system according to the RS-422/485 specification it is very important that the line is terminated at the correct points. -
Page 15: Line Connection
Line connection 4-wire 2-wire RS-422/485 RS-422/485 MDW-45 Twisted pairs equipment MDW-45 equipment Receiver Transmitter Twisted pairs R– T– Transmitter Receiver Transmitter/ Transmitter/ T+/R+ T+/R+ Receiver Receiver T–/R– T–/R– T– R– *) If shielded cable is used, connect the shield only at one end to avoid ground currents. 6617-2203... - 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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