Beckhoff EK1100 User Manual

Commissioning/application notes
EK110x, EK15xx56 Version: 3.6
5 Commissioning/application notes
5.1 Configuration overview
More detailed information on the configuration settings can be found in the EtherCAT system documentation
on the Beckhoff website.
5.2 Application notes
5.2.1 Optical fiber application notes
Fig.39: EK1501
5.2.1.1 Notes on suitable optical fiber cables
General information on optical fiber types
Optical fiber are available as multimode and single mode types with different step and graded indices.
Step and graded index
Optical fiber cables consist of 2 concentric materials, the core and cladding, plus a protective (colored)
jacket. The core and the cladding have a different index of refraction, causing the light waves (modes; a
mode is a natural wave in the optical fiber) to be reflected back into the core at the boundary. Due to the step
change in the index of refraction this type of fiber is referred to as step index. A gradual/parabolic transition
between the index of refraction in the core and the coating (referred to as graded index) can be achieved by
mixing the materials. In a graded index fiber the modes are gradually diffracted back to the core, leading to
propagation-time compensation and significantly higher quality of the light pulse at the outlet compared with
a multimode step index fiber, where the different light modes have different signal run times (mode
dispersion) with associated front distortion.

Beckhoff EK1100 Specifications

General

Product Type	EtherCAT Coupler
Number of Ports	2
Fieldbus	EtherCAT
Bus Interface	EtherCAT
Protection Class	IP20
Max. Current Supply for the E-bus	2 A
Electrical Isolation	500 V (E-bus/Fieldbus)
Weight	approx. 150 g
Relative Humidity	95%, no condensation
Vibration/Shock Resistance	Conforms to EN 60068-2-6/EN 60068-2-27
EMC Immunity/Emission	Conforms to EN 61000-6-2/EN 61000-6-4
Approvals/Markings	CE, UL, ATEX, IECEx
Power Supply	24 V DC (-15%/+20%)
Operating Temperature	-25°C to +60°C
Storage Temperature	-40°C to +85°C
Current Consumption Power Contacts	10 mA
Number of I/O Modules	64
Installation Position	any