5500AC2 Schneider Clipsal C-Bus Application Controller Ethernet RS232 RS485 DIN Rail 24V DC 6 Module

The 5500AC2 is a C-Bus application controller in the Clipsal SpaceLogic range, a DIN rail device six modules wide that gives a C-Bus lighting installation something it otherwise lacks: a place to run logic, keep a schedule and hold a scene that survives a power cycle.

On a simple C-Bus network the intelligence is spread across the input and output units, which is efficient but limited. The application controller exists for projects where that is not enough. It carries an Ethernet port together with serial ports, and it can communicate with Modbus and BACnet equipment as well as to C-Bus, enabling lighting systems to react to building conditions rather than only to switches: HVAC plant state changes, fire alarm inputs, time schedules from head ends, or metering signals.

The controller runs on 24 volts DC and occupies minimal rail space, allowing easy addition to existing panels without requiring rebuilds.

Adding a controller to a lighting network changes the support model, transforming the installation from a collection of predictable devices to a small computing system requiring backup, updates, and documentation.

Since the controller interfaces with both C-Bus and building protocols, it typically handles cross-system logic. However, safety-critical interlocks should be implemented where they remain effective if the controller is offline, as a lighting gateway is not appropriate for fire strategy implementation.

This controller is primarily used in large commercial and institutional lighting installations where complex group and scene management justifies centralized logic control.

• Stadiums, shopping centers, and airport terminals: Coordinate lighting across zones and link lighting states with building operating modes
• Hotels and convention centers: Manage show or event sequences requiring reliable, repeated recall
• Education campuses: Drive schedules from term timetables
• Mixed technology buildings: Serve as integration point where C-Bus lighting meets Modbus plant and BACnet supervision, enabling lighting system participation in energy strategies beyond simple clock-based operation