Specifications

C-Bus Network Interface Installation Instructions
7.0 C-Bus System Clock
The 5500CN Series C-Bus Network Interface (CNI) incorporates a software
selectable C-Bus system clock. The system clock is used to synchronise
data communication on a C-Bus network. At least one active C-Bus system
clock is required on each C-Bus network for successful communication. No
more than three units on a C-Bus network should have their clock enabled,
so this option is normally disabled using the C-Bus Toolkit software.
If a system clock is required, it can be enabled from the unit’s
programming interface in the C-Bus Toolkit software.
8.0 C-Bus Network Burden
The CNI incorporates a software selectable network burden. The network
burden can be enabled from the unit’s programming interface in the C-Bus
Toolkit software, but only if the C-Bus system clock is also enabled.
One network burden is normally required to ensure correct operation of
each C-Bus network. The Network window of a C-Bus Toolkit project
provides a summary of a C-Bus network according to the units added to
the Database. This can be helpful in determining how many burdens are
required on a particular network.
9.0 C-Bus Power Requirements
The CNI does not draw current from the C-Bus network.
10.0 Power Surges
Each unit incorporates circuitry to provide protection from C-Bus network
transients. External power surge protection devices should be used to
enhance system immunity to mains power surges. It is strongly
recommended that overvoltage equipment such as the Clipsal 970 be
installed at the switchboard.
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