Siemens ST PCS 7 manual Passive network components Fiber-optic cables, Optical transmission media

© Siemens AG 2007

Communication

Industrial Ethernet

Passive network components: Fiber-optic cables

■Overview

Optical transmission media

Glass fiber-optic cables are preferably used as the optical trans- mission medium. The two types of cable offered are suitable for above-ground routing indoors or outdoors. They are available in fixed lengths, precut/preassembled with 2 x 2 BFOC connectors (FIBER OPTIC standard cable) or 2 x 2 SC-connectors

(FO Standard Cable).

The FO Standard Cable with 2 x 2 SC connectors is required for optical networks in the Gigabit range, e.g. for implementing op- tical Gigabit Ethernet rings with SCALANCE X414-3E and MM492-2 media modules.

■Technical specifications

Switches	X414-3E + MM492-2,	X414-3E + MM491-2,
	X408-2 + MM492-2	X408-2 + MM491-2,
		X212-2, X212-2LD,
		X202-2 IRT, X206-1LD,
		X204-2, OSM
Port type	1000BaseSX	100BaseFX
Transmission rate	1000 Mbit/s	10/100 Mbit/s
Max. cable length	750 m	3000 m
Cable type	FO Standard Cable	Fiber optic standard
		cable
FO multimode fiber	50/125 µm	62.5/125 µm
type
Connector type	2 x 2 SC	2 x 2 BFOC (ST)

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Cable type	FO	FIBER OPTIC
	Standard Cable	Standard Cable
Applications	Universal cable for
	installation indoors and
	outdoors
Delivery format	Cut-to-length,	Cut-to-length,
	pre-assembled with	pre-assembled with
	4 BFOC(ST) or	4 BFOC connectors
	4 SC connectors	(ST)
Cable type (stan-	AT-W(ZN)YY	AT-VYY 2G62.5/125
dard designation)	2x1G50/125	3.1B200 + 0.8F600 F
Fiber type	Multimode gradient	Multimode gradient
	fiber 50/125 mm	fiber 62.5/125 mm
Damping
• At 850 nm	≤ 2.7 dB/km	≤ 3.1 dB/km
• At 1300 nm	≤ 0.7 dB/km	≤ 0.8 dB/km
Modal bandwidth
• At 850 nm	≥ 600 MHz ⋅ km	≥ 200 MHz ⋅ km
• At 1300 nm	≥ 1200 MHz ⋅ km	≥ 600 MHz ⋅ km
Number of fibers	2	2
Cable design	Segmentable	Segmentable outer
		conductor
Core type	Hollow core, filled	Compact core
Materials
• Basic element	PVC, orange/black	PVC, gray
• Strain relief	Aramide fiber	Kevlar fiber and impreg-
		nated glass fiber
• Outer sheath/color	PVC, green	PVC, black
of cable
Mechanical charac-
teristics
• Dimensions of ba-	2.9 mm diam.	(3.5 ± 0.2) mm diam.
sic element
• Cable dimensions	4.5 x 7.4 mm	(6.3 ⋅ 9.8) ± 0.4 mm
• Cable weight	Approx. 40 kg/km	Approx. 74 kg/km
• Permissible tensile	≤ 500 N	≤ 500 N (temporary)
force
• Bending radius	70 mm	≥ 100 mm only on the
		flat side
• Resistance to later-	300 N/cm	–
al force
Permissible ambi-
ent conditions
• Routing and instal-	-5 ... +50 ºC	-5 ... +50 ºC
lation temperature
• Operating temper-	-25 ... +80 ºC	-20 ... +60 ºC
ature
• Storage temper-	-25 ... +80 ºC	-25 ... +70 ºC
ature
Behavior in fire	–	Flame-retardant to
		IEC 60332-3 and
		VDE 0482-266-2-4
Silicone-free	Yes	Yes
Resistance to min-	Limited resistance	–
eral oils and grease
UL/CSA approvals	OFNG, UL1651	–
	FT4/IEEE1202
UV-resistant	Yes	–
Rodent protection	–	Yes
Gigabit length
• 1000BaseSX	750 m	–
• 1000BaseLX	2000 m	–

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Siemens ST PCS 7 · November 2007