FOC-Decoder

As an alternative to conventional signal transmission using copper cables the signal from incremental encoders can also be transmitted through fiber optic cables (FOC). The signals (0°, 90°, marker pulse and LED check) available in parallel from the encoder are coded in the transmitter and transferred via just one fiber optic cable to the decoder in the switchboard. The decoder converts the coded signals back into the standard electrical signals and the inverted signals are also available.

Advantages of Huebner's fiber optic signal transmission components

  • High data transmission frequency for long cables
  • EMI immunity and thus high transmission safety
  • Less cabling costs by transmission via just one fiber optic cable
  • Electrical insulation (incremental encoder - decoder)
  • FOC-decoder with 2 output blocks (option: mutual electric insulation)
  • Output blocks optionally with HTL and/or TTL signals
  • Monitoring of fiber optic cable breakage to increase the system safety (optional)
Type LWLS-D LWLS-DI
Function FOC-Decoder FOC-Decoder
Design/housing Electronic housing for DIN rail fastening Electronic housing for DIN rail fastening
Supply voltage 12 V to 30 VDC 12 V to 30 VDC
Signal input Optical, ST®-plug connector Optical, ST®-plug connector
Signal output 2 output blocks, optionally HTL and/or TTL level, connection terminals 2 output blocks, optionally HTL and/or TTL level, connection terminals
Output blocks mutually electrical insulated - Standard
Monitoring of FOC breakage Optional Optional
Frequency range 0 to 100 kHz 0 to 100 kHz
Fiber optic cable recommendation Fiber optic cable 62,5/125µm or 50/125µm Fiber optic cable 62,5/125µm or 50/125µm
Dimensions (LxWxH) 23 x 120 x 115 mm 23 x 120 x 115 mm
Degree of protection IP 20 IP 20
Temperature range -20°C to +70°C -20°C to +70°C