Introduction
The Corston in-line dimmer module utilizes electronics to control the dimming of LEDs and incandescent bulbs. It allows toggles to dim lights, maintaining a consistent style throughout a property.
The dimmer features a memory function, turning lights on at the same brightness as they were last used. It supports both trailing edge (TE) and leading edge (LE) modes, which maximize bulb life. The module is compatible with Corston's retractive or centre-retractive switches. DIP switches on the module must be correctly set prior to installation to change its settings.
Features
- Suitable for one-way or multi-way full digital dimming and switching.
- Minimum circuit load down to 2W, supporting dimmable LED and incandescent lighting.
- Supports trailing edge (TE) and leading edge (LE) operation.
- Soft-start operation to extend bulb life.
- Programmable minimum brightness setting.
- Built-in thermal cut-off and short circuit protection.
- Complies with IEC EN60669.
- Can be used with centre-retractive as well as retractive switches.
- Multiple modules can be combined to increase total load per circuit for higher wattage circuits.
Technical Specifications
| Parameter | Value |
|---|---|
| Supply voltage & frequency | 220-240V ~ 50Hz |
| Rating | 10-200W: incandescent lamps, high-voltage halogen lamps and electronic step-down converter for extra low-voltage incandescent lamps; 2-100W: dimmable LED lamps |
| Compatible loads for TE mode | Dimmable LED lighting with compatible electronic transformers; Incandescent lighting, MV halogen lamps; LV halogen lighting with electronic transformers; LV halogen lighting with iron-core transformers |
| Operating temperature | 0-35°C |
| Operating humidity | 10-90% R.H. |
Settings
Setting the Minimum Brightness
With the lamp OFF, change the minimum brightness DIP switch to ON. The lamp will appear at half brightness in three to five seconds. Adjust the brightness to set the desired minimum level. Switch the DIP switch to OFF to save the setting.
Mode Setting
There are two DIP switches on the module that control the type of toggle used and the dimming mode of the module. These should be set prior to installation.
- TE MODE = trailing edge mode
- LE MODE = leading edge mode
- OFF = minimum brightness setting not active
- ON = minimum brightness setting active
The module also features DIP switches for load type selection: Dimmable LED (2-100W max. Leading Edge) and Dimmable LED (2-200W max. Trailing Edge). It is compliant with EN-60669-2-1 and carries the CE mark.
Warning & Installation Information
Electrical Shock Hazard: Hazardous voltage may be present at the output of the dimmer even when set to zero brightness. Always identify and tag the input circuit before accessing wiring connections. Failure to follow this warning can result in death or serious injury.
The dimmer should be protected by a 6A or up to 16A maximum circuit breaker.
The dimmer must always be connected to the live side of the load.
The in-line dimmer module can be connected to a maximum of 20 retractive or centre-retractive toggles. Modules can be wired to increase maximum circuit output. Each module has a maximum output of 200W.
Multiple compatible loads can be used, provided the total lamp wattage does not exceed the maximum load rating of the in-line dimmer module.
When connected with steel-core transformers, only leading edge mode (LE) should be used. Trailing edge (TE) mode cannot be used in this case.
Some lamps may exhibit unexpected performance characteristics when cold. Dimming performance should improve after the lamp warms up. If the lamp begins to flicker or there are dimming issues, the dimmer may need to be changed from TE to LE mode or vice versa.
Wiring Diagrams
These wiring diagrams are examples of common installations. Consult an electrician if in any doubt.
Multiple retractive switches can be used with a Corston in-line dimmer module on the same circuit. Two-way and intermediate switches cannot be used.
Ensure no exposed wires are present upon completion. Connections should be secure and tight. Earth sheathing should be used on any exposed earth wire. The switch assembly should push back into the mounting box without forcing or trapping wires.
Switch Types and Operation
Retractive Switch
Operation: Short press down: on/off; Long press down: brighter/dimmer. Uses twin and earth cables between switches.
Centre Retractive Switch
Operation: Short press up: on/off; Long press up: brighter. Short press down: on/off; Long press down: dimmer. Uses four-core cable between switches.
Diagram Descriptions
One-Way Retractive Switch Wiring
Diagram shows a single retractive switch connected to the dimmer module's Live (L), Neutral (N), and Load terminals, powering a light bulb. The switch controls on/off and dimming functions.
Multi-Way Retractive Switch Wiring
Diagram shows multiple retractive switches (up to 20 maximum) wired in parallel to the dimmer module's control input, controlling a light bulb. The dimmer module is connected to Live (L) and Neutral (N) and powers the load.
One-Way Centre Retractive Switch Wiring
Diagram shows a single centre retractive switch connected to the dimmer module's Live (L), Neutral (N), and Load terminals, powering a light bulb. The switch controls on/off and dimming functions via separate up/down presses.
Multi-Way Centre Retractive Switch Wiring
Diagram shows multiple centre retractive switches (up to 20 maximum) wired in parallel to the dimmer module's control input, controlling a light bulb. The dimmer module is connected to Live (L) and Neutral (N) and powers the load.
Troubleshooting
The dimmer must always be connected to the Live side of the load. One circuit can support up to 20 units for UP/DOWN dim and ON/OFF functions.
