Siemens SIMATIC NET PROFIBUS - Manual (Page 199)

Passive Components for Electrical Networks
7-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
7.2 Plastic Fiber-Optic Cables
Plastic Fiber-Optic Cables
Plastic FO cables are used to connect optical link modules with attachments for
plastic FO cables (OLM/P), optical bus terminals (OBT) and devices with an
integrated optical interface. Under certain circumstances, this is a cost-effective
alternative to traditional glass fiber-optic cables.
Properties of Fiber-Optic Cables
Use the Siemens plastic and PCF FO cables with the following properties:
Table 7-1 Properties of Fiber-Optic Cables
Meaning SIMATIC NET PROFIBUS
Plastic Fiber Optic
Duplex Cord
Plastic Fiber Optic,
Standard Cable
PCF Fiber Optic,
Standard Cable
Standard designation I–VY2P 980/1000
150A
I–VY4Y2P 980/1000
160A
I–VY2K 200/230
10A17+8B20
Uses Used indoors in areas
where little
mechanical load is
expected, such as in
laboratory setups or
in cubicles Used indoors Used indoors
Cable length between
S
OLM – OLM
S
Integrated optical
interfaces, OBT
50 m
50 m
80 m
50 m
400 m
300 m
Fiber type Step index
Core diameter 980
µ
m 200
µ
m
Core material Polymethylmethacrylate (PMMA) Quartz glass
Cladding outer diameter 1000
µ
m 230
µ
m
Cladding material fluoridated special polymer
Inner jacket
S
Material
S
Color
S
Diameter
PVC
gray
2.2 " 0.01 mm
PA
black and orange
2.2 " 0.01 mm
–
(without inner jacket)
Outer jacket
S
Material
S
Color
– PVC
lilac
PVC
lilac
Number of fibers 2