ABB AC 800M User Manual page 111

Section 4 Commissioning of PROFIBUS equipment Tips on the most frequently asked installation
Where can I buy the correct wire, terminals, terminations, and other items
required to install a fieldbus?
•
How can I determine if the installed wire will work? Is there a test? Is there any
test equipment I can rent, buy,...?
•
Can I add new wire, and mix it with installed wire in the same fieldbus
segment?
•
How many devices can I put on one segment?
•
I need a 3.2 kilometer long PROFIBUS PA network. How do I handle this
requirement?
•
3BDS009029R5001 B
ABB offers a complete portfolio of PROFIBUS network components. Please
get in contact with your regional sales manager. PROFIBUS International
offers additional references to the most comprehensive list of suppliers,
devices, services, and other fieldbus related items.
A number of suppliers are developing products for simulating and testing
fieldbus signals and devices. In addition, suppliers of hand-held
communications network test equipment are currently offering fieldbus
communications test devices that can be used to verify the quality of potential
or operating fieldbus segments. A list of supplier is available on the
PROFIBUS International web page (www.profibus.com).
YES! The suppliers of fieldbus cable will be able to provide assistance in the
form of data sheets, training, and services.
It depends on several factors. The PROFIBUS segment is specified to handle a
maximum number is 32 devices per segment. The controller capacity, power
requirements and etc. may lower this amount. Refer to the specific
documentation for operational capacity and consult the device manufacturer for
individual field device's power requirements.
The Physical Layer specification recommends a maximum length of 1900 m
for cable type A wire. If this is not sufficient, up to 4 repeaters can be used to
extend the total length to five times 1900 m, for a total of 9.5 kilometers.
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