Clipsal C-Bus Instruction Manual download pdf (Page 41)

1250SM0904R10/09 C-Bus™ Basic Programming

10/2009 C-Bus™ Products Training Course

C-Bus Current

Each C-Bus network can only have a maximum of 2 A of current being

provided and drawn. Exceeding the 2 A limit could:

 damage the C-Bus cable in a short circuit condition

 cause unexpected behaviour.

The table below lists the different C-Bus power supplies and the amount of

current that they provide to the

C-Bus network.

Type Of C-Bus Power Supply Output Current

DIN Rail Stand Alone 350 mA

DIN Rail Onboard 200 mA

Old Pro Series Dimmer Onboard 60 mA

Matrix Switcher 330 mA

Table 15 - C-Bus Power Supply output currents

NOTE: The full 2 Amps of C-Bus current may not be required for the C-Bus

network to operate. Ensure that the current drawn by all C-Bus units does

not exceed the total current provided by all C-Bus Power Supplies.

The following example explains how to calculate the required C-Bus current

for stable C-Bus operation. To calculate the total amount of current needed

to provide power to the network, simply:

1) Add up the current consumption of all of the C-Bus input units and

System Support Devices.

2) Ensure that the C-Bus Power Supplies that are being used provide

more current than the current being used by all of the input units and

System Support Devices.

Input Units and System Support Device Current Calculation

Unit Type Quantity Current Drawn Total Current

USB PC Interface 1 32 mA 32 mA

4 Button Switch (Standard) 12 18 mA 216 mA

6 Button Switch (Saturn) 5 22 mA 110 mA

8 Button Switch (Neo) 3 22 mA 66 mA

Multi Sensor 5 18 mA 90 mA

Colour Touch Screen 2 22 mA 44 mA

Total Current Draw: 558 mA

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 147 148

No comments

Clipsal C-Bus Instruction Manual Page 41