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Source Controller FAQs

1. What types of lighting are suitable for each Source Controller type?

SCI 'Inductive' models are mains voltage phase-cut dimmers. They are specifically leading-edge in operation. They are also referred to as TRIAC dimmers. They are designed to control incandescent and resistive loads, such as mains voltage lamps and toroidal low voltage transformers.

SCLED 'Transistor' models are mains voltage phase-cut dimmers. They are primarily trailing-edge in operation. They are designed to control electronic and capacitive loads, such as mains voltage LED lamps* and electronic low voltage transformers.
*compatibility testing is recommended before connection of LED loads.

SCA 'Adaptive' models are mains voltage phase-cut dimmers. They can operate in trailing-edge or leading-edge modes. They are designed to control electronic loads, such as electronic low voltage transformers, but can also be used for operating mains voltage capacitive loads (LED lamps*).
*compatibility testing is recommended before connection of LED loads.

SCH 'HF Ballast' models will control analogue 1-10V and digital DSI and DALI ballast and drivers. They can operate in either mode, per channel. HF (High-Frequency) control is commonly used for dimming fluorescent lighting or LED lighting. Mains output relays are provided to switch AC power to the circuits if required (1-10V). DALI mode is broadcast only (no addressing capability).

SCS 'Switching' models are fitted with 10A or 20A rated mains relays to switch AC power to circuits. These are aimed at non-dimmable load types, such as metal-halide.