C-Bus Power Requirements

The dimmer includes a switchable inbuilt C-Bus power supply which can supply 200 mA to the network when enabled.

By default, the inbuilt power supply is disabled, but can be enabled (or disabled) via the front panel.

Adequate C-Bus Power Supply Units must be installed or enabled to support the connected devices. The SpaceLogic
C-Bus Commission software provides information if the inbuilt power supply is enabled/disabled in each unit.

This can be helpful in determining the power supply requirements of a particular network.

NOTE: The dimmers draw 20 mA from the C-Bus network when mains power is not connected and/or when the inbuilt C-Bus power supply is not enabled.

Enable/Disable C-Bus Power Supply from Front Panel

The integrated C-Bus power supply can be enabled or disabled via the front panel by performing a short press on the top right channel button whilst holding down the top left channel button to toggle the enabled state.

The enabled status of the integrated C-Bus power supply is shown on the Unit Indicator and Channel Indicator. The state of the network voltage is shown on the C-Bus Indicator.

If the C-Bus Indicator is flashing or off, the network voltage is too low, meaning there is insufficient C-Bus Power. additional power supplies may need to be enabled.

NOTE: Changing the power supply state will temporarily disrupt C-Bus network communications, which take several seconds to recover, depending on the network configuration.

NOTE: SpaceLogic C-Bus Commission also presents the status of the C-Bus power supply and can disable the ability to change the power supply state from the front panel.

IMPORTANT: Ensure that no more than 2 A of total C-Bus Power Supply capacity is enabled/connected to any one C-Bus network.

Enable/Disable C-Bus System Clock Generator

Dimmers incorporate a selectable C-Bus system clock generator. The system clock is used to synchronize data communication over a C-Bus network. At least one active C-Bus system clock is required on each C-Bus network for successful communication. If a system clock is required, it can be enabled from the SpaceLogic C-Bus Commission software and the indicator buttons on the dimmer.

To enable or disable the C-Bus clock generator via the front panel, short press on the top second-to-right button whilst holding down the top left channel button. This toggles the enable state.

NOTE: SpaceLogic C-Bus Commission also displays the status of the clock and can disable the ability to toggle the clock generator enabled state from the front panel.