grandMA3 Consoles and the NPU Explained

MA Lighting's grandMA3 series includes a range of hardware consoles (compact, light, full-size), the onPC software for PC-based control, and dedicated network processing units (NPU). The system is built on a common software platform, allowing seamless integration and session-based networking. All devices share a unified show file and can be combined to scale parameter counts and DMX outputs.

The grandMA3 software runs on a real-time operating system and supports up to 8,192 parameters per session with a single console or onPC license. However, for shows requiring more parameters or additional DMX universes, the NPU becomes essential.

The grandMA3 NPU is a dedicated hardware device that processes lighting data and generates DMX output over Art-Net, sACN, or direct DMX ports. It does not have a user interface or touchscreen; it is designed to be rack-mounted and controlled via a grandMA3 console or onPC station on the same network.

Each NPU adds up to 4,096 parameters (2,048 per DMX port, with two ports per NPU) to the session. It also provides additional processing power for effects, timing, and cue execution, offloading work from the main console. The NPU is essential when a single console's parameter limit is exceeded or when redundant output is required.

You need an NPU when your show requires more than 8,192 parameters (the maximum for a single grandMA3 console or onPC session). For example, a large festival with thousands of fixtures, media servers, and LED panels may easily exceed this. Adding an NPU increases the total parameter pool by 4,096 per unit, up to a maximum of 32,768 parameters in a session (with multiple NPUs).

Another scenario is when you need additional physical DMX outputs or Art-Net/sACN universes. Each NPU provides two DMX ports (each can output one universe) and can stream up to 64 universes over the network. If your console's onboard outputs are insufficient, an NPU expands your output capacity.

Redundancy is another key reason. In critical productions, you can configure an NPU as a backup processor. If the primary console fails, the NPU can continue running the show with the last loaded cue list, ensuring no interruption.

grandMA3 uses a session-based networking model. All consoles, onPC stations, and NPUs join the same session over a standard Ethernet network (preferably a dedicated lighting network). The session master is typically the main console, but any device can take over if the master disconnects.

When an NPU joins a session, it automatically synchronizes the show file and begins processing its assigned parameters. The console distributes parameter ranges to each NPU, and the NPU handles DMX output for those fixtures. This distributed processing reduces latency and allows the console to focus on user interface and high-level control.

The NPU can also operate in standalone mode for playback-only scenarios, but it requires a console or onPC to program the show initially.

grandMA3 consoles and NPUs output DMX via physical XLR ports (DMX512-A) and over IP protocols: Art-Net and sACN (E1.31). Each device can stream multiple universes over the network. The NPU's two DMX ports each output one universe, but via Art-Net/sACN, it can handle up to 64 universes (depending on network bandwidth and fixture count).

For large installations, using sACN with multicast is recommended for efficient data distribution. The NPU supports both unicast and multicast, allowing flexible network topologies. It also supports RDM (Remote Device Management) over DMX ports for fixture configuration and monitoring.

The grandMA3 ecosystem offers multiple redundancy options. You can configure a backup console or onPC station to take over if the master fails. NPUs can also be set as redundant processors: if one NPU goes offline, another can assume its parameter load. This is critical for live events where downtime is unacceptable.

Additionally, the system supports redundant network paths (e.g., two separate switches) and power supplies (NPUs have dual internal PSUs). The combination of hardware redundancy and session-based failover makes grandMA3 one of the most reliable lighting control platforms.

grandMA3 consoles and NPUs can integrate with media servers, video systems, and audio consoles via protocols like Art-Net, sACN, and MIDI. The NPU's processing power can also be used for pixel mapping and complex effects. For large-scale shows, multiple NPUs can be combined to handle thousands of parameters, while the console provides the programming interface.

For permanent installations, the NPU can be rack-mounted and left running 24/7, controlled remotely via a grandMA3 onPC station. This setup is common in theme parks, cruise ships, and broadcast studios.