General inquiries

Sales & Support

Service hours

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 cables – 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 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.
Data sheet

Fiber optic LWL

PDF ∼ 254,3 KB | 05.2019
Operation Manual

LWL inkremental

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

Declaration of conformity


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

mechanical CAD / STEP


ZIP ∼ 468,6 KB | 05.2019


Cables and connectors

„Do you have technical questions about functional safety or are you looking for individual solutions? I would be pleased to help you.“

Rainer Grueninger
Application support
Rainer Grueninger
Application Engineering
+49 7720 3903 764
+49 7720 21564

„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