Engineering Notes; Designing The Network; Design Engineering Procedure - Siemens Synco 700 Series Basic Documentation

Design engineering
flow chart
Project data
Devices, bus devices
Network
Special criteria
Large plants
Lightning and overvoltage
protection, and EMC
Building Technologies
HVAC Products
2

Engineering notes

2.1

Designing the network

2.1.1

Design engineering procedure

For design engineering refer also to the information in data sheet N3127.
Step Activity
1 Assess the situation
Work out proposed solutions and
2
establish how to implement them.
3 Include plans for possible
expansion zones for extensions
4 Determine device types and
quantity
5 Define the installation of the
devices in accordance with their
technical functions
6 Define cable routing and cable
lengths
7 Determine type of bus power
supply
8 Check limits
9 Create network structure and
wiring diagram
When structuring a network, special attention should be paid to certain criteria:
• The number of bus devices in a line, in an area and in the network
• The type of bus power supply in relation to the number and properties of the bus
devices
• The total length of all the bus cables in one line and in the network
• The distances between the bus devices
• The distance between the bus devices and the nearest bus power supply
Refer to the special notes in section 8 on design engineering for large plants.
Account must also be taken of special criteria in relation to lightning and
overvoltage protection and EMC. For details refer to the discussion in section 9.7.
Basic documentation: Communication via the KNX bus
Engineering notes
Objective
• Accurate site plan with location
of the buildings and layout of
rooms
• Overview of hydraulic system
• Clear project definition
• Advance planning of the scope
for expansion of the plant
• Table of device types
• Number of devices per line and
area, within the permitted limits
• Entry on plant diagram
• List of applications
• Entry on plant diagram
• Network size within permitted
limits
• Decentral bus power
• Central bus power supply
• Number of bus devices per line
and area
• Size of network
• Adequate bus power (with
reserve for later expansion)
• Complete installation and
commissioning documents
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CE1P3127en
30.08.2007