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Example 8: tested, tested, tested! FOC – 37,000 miles 46,600 miles completed

Cover over 37,000 miles or 1.5 times around the earth with chainflex® FOC cables.

Users of data-transmission systems (bus systems) with high data rates, long transmission distances, or strong electro-magnetic loads frequently rely on fiber-optic cables (FOC).

Many users are not yet aware that chainflex® fiber-optic cables for cable carriers offer more advantages than standard FOCs.

Copper-based data-transmission systems characterize themselves primarily through two basic disadvantages:


The maximum transmission distances are limited by the transmission systems (between 16 and 160 ft cable length).


The copper-based cables used in cable carrier systems often display an increase in dampening values after a high number of cycles, which again has a negative effect on the maximum range.

Fiber optic cables made of glass and independent of data transmission and/or bus systems offer the following benefits:


Transmission distances are not limited by data transmission systems used and amount to - depending on the FOC type – a few thousand feet.


Dampening increases are so low in chainflex® FO cables - even for very high numbers of cycles in cable carrier systems - that barely measurable values are ascertainable and the largest part of the dampening is located at the plug.

How far the dampening behavior of an igus® chainflex® fiber optic cable is altered was analyzed in the following test arrangement, but has not yet been completed (as of 12/08).
Test cable: igus® chainflex® CFLG.2HG.MF. 50/125
Number of fibers: 2 numbers
Fiber type: Gradient fiber 50/125µm
Plug: 2 x ST plug
Travel: 6.6 ft (2 m)
Cable length: 9.8 ft (3 m)
Energy chains: igus® energy chain series
Test radius: 11 x d
Application of Chainflex® FOC in a cable carrier

Allowing for an average insertion loss of 0.3 dB and a maximum of 0.5 dB for the ST plug, the dampening increase of about 0.1-0.15 dB after over 30 million movements in the cable carrier is completely negligible. The cable covered over 37,000 miles of travel in the test.

The fiber-optic wavelength considered here is 850 nm.

More information on Chainflex® cables

The terms "igus", "Apiro", "chainflex", "CFRIP", "conprotect", "CTD", "drylin", "dry-tech", "dryspin", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-skin", "e-spool", "flizz", "ibow", "igear", "iglidur", "igubal", "kineKIT", "manus", "motion plastics", "pikchain", "plastics for longer life", "readychain", "readycable", "ReBeL", "speedigus", "triflex", "robolink", "xirodur", and "xiros" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsibushi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention in this website. The products offered by igus® are those of igus® GmbH