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Fritz Kübler GmbH

Monday - Thursday: 7.30 am to 5.00 pm
Friday: 7.30 am to 4.00 pm


Fiber optic


  • Range of 2000 m
  • Space-saving cabling
  • Simple commissioning
  • LEDs for monitoring
  • Flexible connection options
TTL / RS422

Fiber optic cable - reliable signal transmission under difficult environmental conditions.

The system consists of a fiber-optic transmitter and a fiber-optic receiver. The fiber optic transmitter converts the electrical signals of a conventional incremental encoder into an optical signal. The receiver module converts the optical signal back into electrical signals. Up to 4 channels with inversion can be safely transmitted.

Range 2000 m
Dimension 22 mm x 75 mm x 110 mm
Working temperature -10 °C ... 60 °C
Protection level IP20
Interfaces HTL
TTL / RS422
Inputs coding A, A|, B, B|, C, C|, D, D|
A, A|, B, B|, C, C|, D, D|
Outputs coding A, A|, B, B|, C, C|, D, D|
A, A|, B, B|, C, C|, D, D|
Input frequency 400000 Hz
Output frequency 400000 Hz
Power supply 5 V DC
10...30 V DC
Transmission rate 120 Mbit/s
  • Signal transmission via just a single glass fiber.
  • Safe signal transmission up to 2000 m.
  • Input frequency up to 400 kHz.
  • Input level 10 to 30 V or RS422.
  • Inverted input signals.
  • Resists extremely strong electro-magnetical fields.
  • Signal transmission from several sensors possible thanks to 8 independent signal channels.
  • Can be installed even where space is tight.
  • Minimal installation depth.
  • Connections plug-in HD-Sub-D15 or terminal clamp.
Application areas
  • Process control technology and automation technology.
  • Applications sensitive to interference.
  • High voltage plants.
  • Plants with long transmission distances.
  • Potential separation.
  • Explosive areas.
Data sheet

Fiber optic LWL

PDF ∼ 702,5 KB | 11.2023
Operation Manual

LWL - Incremental

Multilingual: German, English
PDF ∼ 445,4 KB | 07.2018

Declaration of conformity

Fibre optic transmitter module, fibre optic receiver module CE

Multilingual: German, English, French
PDF ∼ 19,1 KB | 10.2014

Mechanical CAD / STEP


ZIP ∼ 468,6 KB | 05.2019


Cables and connectors

 Connector with cable , Fiber optic cable set

Connector with cable , Fiber optic cable set

Preassembled cable set

TTL / RS422
Male connector 1-pin

Male connector 1-pin

Data sheet
LWL Kabel - 05.B09-B09.821

„Do you have technical questions about functional safety or are you looking for individual solutions? We at Application Support are here for you.“

Rainer Grueninger
Application support
Rainer Grueninger
Application Engineer
+49 7720 3903 849

„We will be pleased to give you information about prices and delivery times. We are looking forward to your inquiry.“

Fritz Kübler GmbH
Fritz Kübler GmbH
Sales Germany
+49 7720 3903 871
+49 7720 21564