Clipsal C-Bus Specifications Page 10
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C-BUS TRAINING MANUAL - VOL 1
10
1.1 Ease Of Wiring
No point to point wiring is required. All input and output units are looped together with Cat-5 UTP
cable. Units do not need to be wired in any particular order.
The positive and negative C-Bus terminals on each unit are connected to the appropriate conductors
on the C-Bus cable. These two conductors carry a low voltage power supply for the electronics in
each C-Bus unit, and also allows digital control signals to be sent between units.
1.2 Flexibility
A C-Bus input unit can be programmed to perform various functions such as timing, dimming on/off
and other functions. This programming can be changed as often as needed.
An input can control many outputs, providing simple load bank control. An output can be controlled
by many inputs, providing multipoint control (including dimming) without complex wiring.
The program that specifies which inputs control and which outputs can be changed as often as
needed, to match an installation’s changing needs.
2.0 How C-Bus Works
2.1 C-Bus Network Wiring
The C-Bus network bus is the communications wiring for the system, consisting of an unshielded
twisted pair (UTP) Cat-5 cable. The bus not only provides the means of communication between
units, but also the small amount of power needed to operate the circuitry within each C-Bus unit.
The C-Bus network is electrically isolated from the mains power, and operates at safe extra low
voltage level (36V d.c.). Legal restrictions of mains wiring do not apply, so C-Bus wiring may be run
into places that would be dangerous (or illegal) with normal mains wiring.
All input and output devices are wired to any point in the C-Bus network by a twisted pair cable,
which carries all communications between the units.
The C-Bus connections may be looped from unit to unit or a branch can be made at any point. This
‘free topology’ structure provides a flexible system layout. New units can be added anywhere, at any
time, without reconfiguration.
During commissioning, the system is programmed so that specific commands trigger specific
responses in one (or more) devices on the network. At any time the commands can be re-
programmed, and C-Bus units can also be added, removed or moved.
The size of a C-Bus network is practically unlimited. A large network is usually divided into sub-
networks of 100 C-Bus units, with a total cable length of 1 km per sub-network. This allows a C-Bus
system to be divided into manageable sections, simplifying design, limiting potential fault propagation
and aiding in any troubleshooting.
- Basic 1
- Training Manual 1
- Volume 1 1
- Volume 1A 6
- Introduction to C-Bus 6
- Introduction - What is C-Bus? 8
- 1.0 Why Use C-Bus 9
- 1.1 Ease Of Wiring 10
- 1.2 Flexibility 10
- 2.0 How C-Bus Works 10
- 2.1 C-Bus Network Wiring 10
- 2.4 Multiple Events 11
- 2.5 Control Flexibility 11
- 2.2 C-Bus Units 11
- 2.3 Simple Control 11
- 2.6 Types of Units 12
- 3.0 C-Bus Communications 13
- C-BUS TRAINING MANUAL - VOL 1 14
- 4.0 Wiring Methods 15
- 4.1 Conventional Wiring 15
- 4.2 C-Bus Wiring 15
- 4.3 Wiring a C-Bus Network 16
- 4.4 Which Wires to Use 17
- 4.5 C-Bus Terminations 18
- 1A. Introduction to C-Bus 19
- 4.7 Location of C-Bus Units 20
- 6.0 C-Bus Power Supplies 22
- 6.3 Over Voltage Protection 22
- 6.4 Multiple Power Supplies 22
- 6.5 Types of Power Supplies 23
- 7.0 Network Burdens 23
- 10.0 Address Structure 27
- 10.1 Unit Address 28
- 10.2 Group Address 29
- 10.3 Area Address 30
- 11.0 Programming Technique 30
- 12.1 Local Toggle Buttons 31
- 12.3 Learn Mode 31
- Volume 1B 32
- C-Bus Concepts 32
- Learning Outcomes 33
- 1.1 Cable Type 33
- 1.2 Maximum Cable Length 35
- 1.3 Mains Segregation 36
- 1.4 Single Network Topology 37
- 1.5 C-Bus Cable Current 38
- 1.6 System Voltage 38
- 1.7 Units per Network 38
- 1.8 C-Bus Clock 39
- 1.9 Network Burden 40
- 2.1 Network Address 41
- 2.2 Unit Address 41
- 2.3 Application Address 42
- 2.4 Group Address 43
- 2.5 Area Address 43
- 2.6 Levels and Selectors 43
- 2.7 C-Bus Tags 44
- Volume 1C 45
- C-Bus Hardware 45
- 1.0 System Support Devices 46
- 1.1 Power Supply 47
- 1.2 Network Bridge 48
- 1C. C-Bus Hardware 49
- 1.3 PC Interface 50
- 2.0 C-Bus Input Units 51
- 2.1 Operation of Input Units 52
- 2.2 Pressing a Button 52
- 2.3 Sending Input Messages 53
- 3.0 C-Bus Output Units 53
- 3.1 Voltage Free Relay 54
- 3.4 DIN Rail Series Dimmer 55
- 3.5 DSI Gateway 55
- 3.6 Analogue Output Unit 56
- 3.7 Infrared Transmitter 56
- 4.0 C-Bus Indicators 57
- Volume 1B. C-Bus Concepts 62
- Volume 1C. C-Bus Hardware 63
- 1300 2025 25 64
- 1300 2025 56 64
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