Light dimmer module EK-GD1-TP-4-LV-T

Description
The EK-GD1-TP-4-LV-T is a 4-channel KNX dimmer for constant-voltage LED loads (CV) that provides PWM brightness control at 12/24/48 Vdc. Engineered for dimmable LED strips and fixtures, it supports monochrome and CCT (Tunable White) applications. DIN-rail mounting simplifies integration into electrical panels. The unit includes an integrated SELV 30 Vdc bus communication module and is KNX certified.

Technical data
Inputs

• Supply voltage: min 10.8 Vdc — max 52.8 Vdc
• Supported constant input voltages: 12 / 24 / 48 Vdc

Outputs

• PWM voltage outputs: 12 / 24 / 48 Vdc
• Maximum output current: 6 A per channel (12 A for two channels in parallel)
• Output channels: 4
• Nominal power per channel: 72 W @12 V, 144 W @24 V, 288 W @48 V

Dimming

• PWM dimming frequency configurable from 250 Hz to 6 kHz
• Dimming range: 1–100%

Supply
The device supply includes a terminal for connection to the KNX bus line (SELV 30 Vdc).

Functions / Features

• Plastic housing for DIN-rail installation (35 mm profile, 4 modules)
• Protection rating: IP20 (installed)
• ON/OFF and brightness control for individual or grouped luminaires; Tunable White and DimToWarm support
• Selectable PWM output frequency via ETS (250 Hz–6 kHz)
• Configurable fade-in/fade-out times, min/max brightness, linear or logarithmic curves via ETS
• Soft or instant ON/OFF with adjustable delay
• Parallel connection of outputs allowed to increase power
• Configurable behavior after power restoration; bus ON/OFF, downloadable via ETS
• Channel modes configurable in ETS: independent, parallel, or Tunable White
• Lock, forced operation, staircase light, scenes, night mode, meters and logic functions per channel (ETS-configurable)
• Power-failure alarm
• Local membrane buttons for manual ON/OFF testing of channels 1–4 (short press ON/OFF; press ≥2 s for periodic flash)
• Relay contact to switch off AC/DC supply when 12/24/48 Vdc outputs are off or to provide auxiliary output
• Auxiliary output via relay with status reporting on KNX

Configuration and commissioning
Detailed parameters are in the device application manual. ETS5 or higher required for configuration. Application program for ETS: APEKGDXTPXLVTW##.knxprod (## = version).

Characteristics / technical specifications

• Product code: EK-GD1-TP-4-LV-T
• Series: EK-GD1
• Compatible loads: dimmable LED strips and LED loads; suitable for monochrome and CCT (Tunable White)
• Supply voltage range: 10.8–52.8 Vdc; supported constant inputs: 12 / 24 / 48 Vdc
• Outputs: 4 PWM channels; 6 A per channel (12 A for two parallel channels)
• Nominal power per channel: 72 W (@12 V), 144 W (@24 V), 288 W (@48 V)
• PWM dimming frequency: configurable 250 Hz–6 kHz
• Dimming range: 1–100%
• Mounting: 35 mm DIN rail (4 modules)
• Protection rating: IP20 (installed)
• Housing: plastic
• Integrated SELV 30 Vdc bus communication module; KNX certified
• Local membrane buttons for testing and manual control
• Relay for supply switching/auxiliary output with KNX status
• ETS-configurable features: PWM frequency, fade times, min/max brightness, adjustment curve, channel mode, power-restoration behavior, logic functions, meters, scenes