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Summary of Contents for Westermo LD-63B DC
- Page 1 INSTALLATIONSANVISNING INSTALLATION MANUAL INSTALLATIONS ANLEITUNG 6072-2021 Galvanic Transient Balanced Isolation Protection Transmission Approved Linjedelare, optisk fiber - RS-422/485 Line sharing device, fibre optic - RS-422/485 Glasfaser Leitungsteiler - RS-422/485 www.westermosales.com...
- Page 2 500V 500V 3 750V * For higher data rate, please contact Westermo. Description LD-63B The LD-63B is a line splitter for use in multi-drop fib e r optic networks. The LD-63B allows conversion between RS-422/485 and fib e r optic. LD-63B is specially developed for Manchester coded protocols with transmission rates over 500 kbit/s.
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Page 3: Power Budget
Power budget The LD-63B is developed for Manchester coded protocols and this means that the power budget will change with the number of preamble bits in the actual protocol. Preamble bits are sent before the actual data and has the function of synchronise units in the network (see figure below). - Page 4 Minimum guaranteed budget 820nm, 62.5/125µm fib e r 20 bits preamble 10 bits preamble 2 bits 1 bit preamble preamble 1000 1500 2000 2500 3000 3500 4000 4500 Transmission speed (kbit/s) Minimum guaranteed budget 1300nm, 62.5/125µm fib e r 20 bits preamble 10 bits preamble...
- Page 5 Attenuation in fib e r cable The values below can differ depending on quality and manufacturer of the fib e r-optic cable. Attenuation Attenuation Attenuation Fibre at 820 nm at 1300 nm at single mode (1300 nm) 50/125 µm 3.0 dB/km 1.0 dB/km 62.5/125 µm 3.5 dB/km...
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Page 6: Factory Settings
Switch settings LD-63B Selection of speed S3:4-1 Over 1 Mbit 1 2 3 4 5 6 7 8 9 Under 1 Mbit 1 2 3 4 5 6 7 8 9 S1:1-9 S2:1-5 Selection of V or Y function Selection of 2- or 4-wire 4-wire 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9... -
Page 7: Power Connection
2-position screw-terminal Maximum number of units Connection Power supply – Voltage Transmission speed Number of units + Voltage 500 kbit/s 1 Mbit/s 2 Mbit/s 4 Mbit/s For additional units please contact Westermo Gross Automation (877) 268-3700 · www.westermosales.com · sales@grossautomation.com 6072-2021... - Page 8 Example: Multidrop LD-63B LD-63B LD-63B S1:2 ON Y-funktion RS-422/485 RS-422/485 RS-422/485 NB When a multidrop connection ends with an LD-63B and the fib e r pair is connected on channel 2, the switch S1:2 must be set (Y-function) Connection of RS-422, RS-485 RS-422/485 POWER RS-422/485...
- Page 9 OWN COMMENTS ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................Gross Automation (877) 268-3700 · www.westermosales.com · sales@grossautomation.com 6072-2021...
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Page 10: Block Diagram
Block diagram High Demodulator Modulator RS-422/485 Y/V mode switch, S1:2 RS-422/485 LOGIC High Demodulator Modulator Westermo Teleindustri AB have distributors in several countries, contact us for further information. Gross Automation (877) 268-3700 · www.westermosales.com · sales@grossautomation.com...
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