Lutron Electronics

Role in our panels

How we use Lutron Electronics

Homeworks QS architecture: the HQP7 processor (DIN-rail, Linux-based) manages up to 200 controlled devices (dimmers, switches, shades, temperature sensors) across 100+ circuits. Devices communicate over the HWQS system bus — a proprietary 4-wire RS-485-derived bus running at 9600 baud, separate from KNX TP. HWQS keypads (HWKP8, HQRD) send scene recall commands to HQP7, which executes lighting scenes with Lutron's characteristic smooth sine-wave dimming at 1-second fade time. HQP7 includes Ethernet RJ45 for app connectivity, remote access via Lutron Connect Bridge, and third-party integration including KNX. CLEAR CONNECT wireless: Lutron's proprietary 433/434 MHz wireless protocol for battery-powered remotes and tabletop controllers. CLEAR CONNECT uses frequency agility (hops across 5 channels) and mesh ACK handshaking for zero-missed-command reliability at up to 9m through walls. For KNX installations: CLEAR CONNECT wireless keypads can trigger Lutron scenes that simultaneously send KNX group address telegrams via HQP7 KNXnet/IP — eliminating the need for separate KNX wireless devices in rooms where Lutron keypads are already installed. KNX integration workflow: the Lutron HQP7 KNXnet/IP module (configured in HW-ACCESS-LINK software) maps each Lutron zone to KNX group addresses: zone ON/OFF → DPT 1.001; zone dim level → DPT 5.001 (0-255); scene recall → DPT 18.001 (scene 0-63). ETS6 receives these as virtual KNX devices. KNX presence sensors (Elsner KNX TH-UP, BEG PD9-KNX) send occupancy telegrams that HQP7 intercepts — triggering Lutron "Occupied" scene at appropriate lux setpoint. Feedback loop: HQP7 publishes actual zone level back to KNX status group address → Gira X1 or Home Assistant visualises live Lutron light levels on floor plan. Caséta for smaller projects: Lutron Caséta (Smart Bridge Pro, wireless, works with HomeKit/Google/Alexa) is Lutron's entry-level smart system for apartments and smaller homes. Caséta integrates with Home Assistant via the Lutron Caséta local API (no cloud) — HA then bridges to KNX via the KNX integration. This is a cost-effective route for projects where full Homeworks QS specification is not justified but the specifier wants Lutron dimmer quality with KNX smart home integration.

Lutron integrates with KNX via HQP7 KNXnet/IP module (scene triggers, zone level commands, status feedback), CLEAR CONNECT remotes triggering Lutron scenes that propagate KNX commands, and Caséta via Home Assistant local API bridge to KNX integration. All Lutron zone levels appear as KNX status group addresses for energy monitoring and visualisation.