Siemens SIMATIC NET PROFIBUS manual Plastic Fiber-Optic Cables, Properties of Fiber-Optic Cables

Passive Components for Electrical Networks

7.2Plastic 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 7-1Properties of Fiber-Optic Cables

Meaning

SIMATIC NET PROFIBUS

Plastic Fiber Optic	Plastic Fiber Optic,	PCF Fiber Optic,
Duplex Cord	Standard Cable	Standard Cable

Standard designation		I–VY2P 980/1000		I–VY4Y2P 980/1000	I–VY2K 200/230
		150A		160A	10A17+8B20
Uses		Used indoors in areas		Used indoors	Used indoors
		where little
		mechanical load is
		expected, such as in
		laboratory setups or
		in cubicles
Cable length between
S	OLM – OLM	50 m		80 m	400 m
S	Integrated optical	50 m		50 m	300 m
	interfaces, OBT
Fiber type				Step index
Core diameter		980 ∝ m			200 ∝ m
Core material		Polymethylmethacrylate (PMMA)			Quartz glass
Cladding outer diameter		1000 ∝ m			230 ∝ m
Cladding material			fluoridated special polymer
Inner jacket
S	Material	PVC		PA	–
S	Color	gray		black and orange	(without inner jacket)
S	Diameter	2.2 " 0.01 mm		2.2 " 0.01 mm
Outer jacket
S	Material	–		PVC	PVC
S	Color			lilac	lilac
Number of fibers			2

PROFIBUS Networks SIMATIC NET	7-3
6GK1970-5CA20-0AA1 Release 2 05/2000