Fiber-Optic Cables; Features Of The Fiber-Optic Cables - Siemens SIMATIC S7-400 Installation Manual

Networking
PROFIBUS Optical Bus Terminal (OBT)
A PROFIBUS node can be connected to the optical PROFIBUS-DP network via a
PROFIBUS Optical Bus Terminal (OBT) (6GK1 500-3AA00) without an integrated
fiber-optic cable interface (e.g. programming devices (PGs) or operator panels
(OPs), see Figure 5-13).
The programming device/PC is connected to the RS 485 interface of the OBT by
means of the PROFIBUS cable. The OBT is integrated in the optical
PROFIBUS-DP line by means of its fiber-optic cable interface.
5.8.1

Fiber-Optic Cables

Features of the Fiber-Optic Cables

Use Siemens plastic and PCF fiber-optic cables with the following features:
Table 5-4 Features of the Fiber-Optic Cables
Description
Standard designation
Field of application
Fiber type
Core diameter
Core material
Cladding outer diameter
Cladding material
Inner sheath
•
Material
•
Color
• Diameter
Outer sheath
•
Material
•
Color
Number of fibers
Attenuation at
wavelength
5-24
SIMATIC NET PROFIBUS
Plastic Fiber-Optic
Duplex Conductor
I-VY2P 980/1000
150A
Indoors with a low
mechanical load,
such as laboratory
test assemblies or in
cabinets:
Cable lengths up to
50 m
980 μm
Polymethyl methacrylate (PMMA)
1000 μm
Fluorinated special polymer
PVC
Gray
2.2  0.01 mm
--
≤ 230 dB/km
660 nm
Plastic Fiber-Optic
Standard Cable
I-VY4Y2P 980/1000
60A
Indoor applications:
Cable lengths up to
50 m
Step-index fiber
PA
Black and orange
2.2 ± 0.01 mm
PVC
Purple
2
Automation System S7-400 Hardware and Installation
PCF Fiber-Optic
Standard Cable
I-VY2K 200/230
10A17+8B20
Indoor applications:
Cable lengths up to
300 m
200 μm
Quartz glass
230 μm
--
(Without inner sheath)
PVC
Purple
≤ 10 dB/km
660 nm
A5E00850741-01