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Section 4 Commissioning of PROFIBUS equipment
Installation hints for optical fibre cables
3BDS009029R5001 B
95
Installation hints for optical fibre cables
•
Installation waste must be treated with care
•
Do not look direct in open fibre ends
•
Keep fibre optic cable plugs clean
•
Do not stress fibre optic cables (stress increase the attenuation)
•
Plan adequate attenuation reserves
An off-the-shelf interface converter is needed for the transition from RS485 bus
technology to a fiber-optic cable. An FO cable consists of two glass fiber leads, one
for transmit data and one for receive data.
Usually, the
RTS signal
on the
PROFIBUS connector controls if data is transmitted
or received.
Note that this signal and the
VP
and
GND
signals
additionally have to be applied
to an interface converter
. Observe the instructions in the user manual delivered
with your interface converter.
Always use fiber optic cables for links between buildings. Fiber optic cables provide
for protective voltage separation and ensure lightning protection without requiring
additional measures. Use multi-wire cable to reduce cable laying cost. As different
for indoor cable links, multi-wire cables enable additional data links in future.
Moreover, you can change over to an unused wire in case of wire-break.
Several outdoor cable types - e.g. gopher-protected or with a special steel or aramid
reinforcement - are available. Note that steel-reinforced cables should only be used
under special conditions for outdoor applications. In this case, the reinforcement are
available. Note that steel-reinforced cables should only be used under special
conditions for outdoor applications. In this case, the reinforcement must be
grounded at both ends when entering the buildings to provide lightning protection.
Use fiber optic cables wherever it is possible to improve the operational reliability
and achieve optimal EMI shielding.
For details on PROFIBUS with fiber optic cables refer to:
PROFIBUS, Technical Guideline Optical Transmission Technology,
Catalog No. 2.022
Содержание AC 800M
Страница 1: ...Power and productivity for a better worldTM AC 800M PROFIBUS DP Installation System Version 5 0 5 1...
Страница 2: ......
Страница 3: ...AC 800M PROFIBUS DP Installation System Version 5 0 5 1...
Страница 8: ...Table of Contents 8 3BDS009029R5001 B...
Страница 16: ...Released User Manuals and Release Notes About This User Manual 16 3BDS009029R5001 B...
Страница 29: ...Section 2 Transmission Technology RS485 network limits 3BDS009029R5001 B 29 Figure 2 RS485 network limits...
Страница 56: ...Calculation of transmission delay time TTD Section 2 Transmission Technology 56 3BDS009029R5001 B...
Страница 116: ...Updates in Revision Index B 116 3BDS009029R5001 B...
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