SpaceLogic C-Bus Digital Dimmers
User Guide
Information about features and functionality of the device. Models: 5508D1D, 5504D2D
Release Date: 10/2023
Website: www.se.com
Legal Information
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About the Device
Digital Dimmers are designed for switchboard distribution applications. The 5508D1D and 5504D2D are new generation C-Bus phase cut dimmers compatible with a wide range of load types due to their customizable load profile and dimming curve features. The units are DIN rail mounted, measuring 12 modules wide (1 module = 18 mm). C-Bus connection is achieved through RJ45 connectors.
Features:
- DIN Rail mount, 12 M size
- Integrated Switchable C-Bus Power Supply
- Trailing edge or Leading-edge phase control (manually adjustable per channel)
- Fully customizable load profiles and dimming curves
- 230 / 110 V nominal voltage
- Advanced status information for the unit and the channels
- Two phase-independent dimming banks
- Full configuration with SpaceLogic C-Bus Commission
- Programming via C-Bus connection without an energized mains line
- 2 models: 8 channel 1 A (5508D1D), 4 channel 2 A (5504D2D)
Compatible Loads
The Load compatibility table shows the loads that are compatible with the C-Bus Digital Dimmers:
8 Channel Dimmer (1 A per channel)
| Load Type | Lamp Rating at 230 Vac | Lamp Rating at 110 Vac |
|---|---|---|
| Dimmable LED Lamps and luminaries | 230 W | 110 W |
| Incandescent/Halogen Lamps | 230 W | 110 W |
| Halogen Lamps with electronic transformers | 230 W | 110 W |
| Halogen Lamps with dimmable iron core transformers | 230 W | 110 W |
4 Channel Dimmer (2 A per channel)
| Load Type | Lamp Rating at 230 Vac | Lamp Rating at 110 Vac |
|---|---|---|
| Dimmable LED Lamps and luminaries | 460 W | 220 W |
| Incandescent/Halogen Lamps | 460 W | 220 W |
| Halogen Lamps with electronic transformers | 460 W | 220 W |
| Halogen Lamps with dimmable iron core transformers | 460 W | 220 W |
NOTE: The installer should ensure that an appropriate manually operated mechanical isolating switch and circuit breaker is installed with the load, complying with the local wiring rules.
IMPORTANT: It is recommended that motorized loads, such as exhaust fans and ceiling fans are connected to the relevant C-Bus relays rather than dimmers.
Hardware Description
The dimmers feature a modular design for DIN rail mounting.
8 Channel Dimmer
The 8-channel dimmer has terminals for mains connections (Earth, Neutral, Active Line) and load connections for 8 channels. It also includes C-Bus connectors (RJ45), unit indicators, and a transparent cover for labelling.
4 Channel Dimmer
The 4-channel dimmer includes the following components:
- A: Earth terminal
- B: Wire Link Terminal for 110 V supply
- C: Neutral terminal
- D: Active Line terminal
- E: Load Connections for channels
- F: C-Bus Indicator LED
- G: Unit Indicator LED
- H: USB (Type-C) Connector for programming
- I: Hard Reset Button
- J: Channel Button Indicators
- K: C-Bus Connectors (2x RJ-45)
- L: C-Bus Network Cable connection point
- M: Transparent Removable Cover for labelling
- N: Space for Labelling
- O: QR Code for Product Details and Serial Number (Note: QR code content is not included in HTML)
Phase Banks
The dimmers have 2 separate dimming banks, each requiring separate active and neutral connections. These banks can be connected to different phases and also to different phases from the dimmer's unit power supply.
Project Design and Installation
Installation Requirements
- Ensure adequate airflow and ventilation around the unit.
- Consider derating guidelines if ambient temperatures exceed operating temperature.
- Operating calorific values and heat load must be considered when designing distribution boards.
- Connect only compatible load types.
- Use of external protection against power surges is recommended.
Device and channel operating Temperature and Derating
The rated load of 8 amps (for 8-channel) or 8 amps total (for 4-channel) is at 100% with an operating environment temperature of 35°C or below. The rated load is reduced linearly as temperature increases, down to 4 amps total at 55°C. Dimmers incorporate protection features: if a channel's temperature exceeds 80°C, brightness reduces ("Over Temperature Windback"); if it reaches 100°C, the channel shuts down ("Over Temperature Shutdown").
Heat Load Generated by the Dimmer
The following table shows calorific values generated by the dimmer during operation:
| Dimmer | Load Capacity | C-Bus Power Supply Status | Heat (BTU/h) |
|---|---|---|---|
| 5508D1D (8 channel 1 A) | At Maximum Load | C-Bus Power Supply Enabled | 74.4 |
| C-Bus Power Supply Disabled | 65.9 | ||
| 5504D2D (4 channel 2 A) | At Maximum Load | C-Bus Power Supply Enabled | 19.8 |
| C-Bus Power Supply Disabled | 11.3 |
Mounting and Wiring
Mounting
The dimmer should be installed horizontally on DIN EN 50022 TS 35 mounting rails inside a distribution board.
Electrical Connection
[DANGER] HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH: This product must be installed and serviced by appropriately qualified and/or licensed professionals. Isolate electrical supply before work. Ensure correct installation and testing before reconnecting supply. Do not use for other purposes. Pay attention to specifications and wiring diagrams. Do not attempt to open the product casing.
The 5508D1D can handle up to 8 A across 8 channels (1 A per channel). The 5504D2D can handle up to 8 A across 4 channels (2 A per channel). Consider maximum current and terminal size when selecting cables.
Mains terminals accommodate 2 x 1.5 mm² or 1 x 2.5 mm² (2 x 16 AWG or 1 x 13 AWG) cable. The required screwdriver is Philips PH1. Maximum torque is 0.6 Nm.
110 V Electrical Wiring: To use with a 110 V unit supply, break the T-Block terminal using a screwdriver and connect a wire link between terminals.
[WARNING] EQUIPMENT DAMAGE HAZARD: Do not break T-Block terminal or insert wire link unless using with 110 V unit supply voltage.
[NOTICE] EQUIPMENT DAMAGE HAZARD: When breaking the T-Block, be careful not to damage other terminal blocks.
C-Bus Network Connection
Connection is made via RJ45 connectors using C-Bus certified cable (pink sheath). The RJ45 connectors are internally connected. The pinouts and wire conductor assignments comply with TIA/EIA 568A wiring standard.
| RJ-45 Pin | Wire Colour (TIA/EIA 568A) | Signal |
|---|---|---|
| 1 | Green & White | Remote ON |
| 2 | Green | Remote ON |
| 3 | Orange & White | C-Bus Negative (-) |
| 4 | Blue | C-Bus Positive (+) |
| 5 | Blue & White | C-Bus Negative (-) |
| 6 | Orange | C-Bus Positive (+) |
| 7 | Brown & White | Remote OFF |
| 8 | Brown | Remote OFF |
C-Bus Power Requirements
The dimmer includes a switchable inbuilt C-Bus power supply that can supply 200 mA to the network when enabled. By default, it is disabled but can be enabled/disabled via the front panel. Adequate C-Bus power supply units must be installed or enabled to support connected devices. Dimmers draw 20 mA from the C-Bus network when mains power is not connected or the inbuilt supply is disabled. Ensure no more than 2 A of total C-Bus Power Supply capacity is enabled/connected to any one C-Bus network.
Enable/Disable C-Bus Power Supply from Front Panel
Perform a short press on the top right channel button while holding down the top left channel button to toggle the enabled state. The enabled status is shown on the Unit Indicator and Channel Indicator. If the C-Bus Indicator is flashing or off, network voltage is too low, requiring additional power supplies.
Enable/Disable C-Bus System Clock Generator
Dimmers incorporate a selectable C-Bus system clock generator, required for synchronizing data communication. At least one active clock is needed per network. It can be enabled/disabled via the front panel by a short press on the top second-to-right button while holding down the top left channel button.
Using the Device
Dimming Mode Selection (TE/LE)
By default, all dimmer channels are set to Trailing Edge (TE). The dimming mode (TE or Leading Edge - LE) can be changed per channel via the front panel or SpaceLogic C-Bus Commission software. A short press on the channel button toggles the channel state. The channel button illuminates Yellow for TE and Green for LE. If the channel does not turn on and the indicator flashes red, the channel settings need changing.
Selecting the right Dimming Mode
LE mode is typically needed only for inductive loads like iron-core transformers or motors. If an inductive load is connected in TE mode, the dimmer may detect voltage spikes and shut down the channel, indicating a "Mode Error" (flashing red). To change mode, press and hold the flashing red channel indicator for ~10 seconds; the channel will restart in LE mode (green indicator). Some LEDs work better in TE mode. If an LED is incompatible in LE mode (shutting down with "Incompatible Load Error" - flashing red), change to TE mode (~10s long press).
Local Override
The channel indicator buttons provide local override capability. Each button illuminates when its channel is ON. Button functions depend on press duration:
- Short-press (<0.5 second): Toggles the state of a channel.
- Double Short-press: Returns the channel to the C-Bus network level.
- Long-press (1-2 second): Returns all channels to the C-Bus network level.
By default, C-Bus commands override local toggle changes, reverting only the affected channel to the C-Bus state. This priority can be adjusted in software.
Priority of the Operating Modes
The priority ranking for output status changes is:
| Mode | Priority | Function |
|---|---|---|
| Thermal overload | 1 (highest) | Channel automatically dimmed |
| Remote OFF | 2 | All channels OFF |
| Remote ON | 3 | All channels ON |
| Local override | 4 | Toggles the channel |
| C-Bus Input (Wall plates, sensor etc) | 5 | Control the channel |
Remote Override
Extra C-Bus network cable pairs provide high-priority override functions. The Green & Green/White pair is for Remote ON, and the Brown & Brown/White pair is for Remote OFF. Connecting either pair to the C-Bus negative pair activates the function. Ensure these pairs are not left unplugged to avoid accidental activation.
Power-Up Load Status
The dimmer stores the operating state of each channel in non-volatile memory. Upon power restoration, it waits ~5 seconds for power to stabilize before restoring channel states. This can be configured via SpaceLogic C-Bus Commission software to restore any fixed level or the previous level.
Phase-Cut Dimming
Phase control dimmers adjust brightness by varying the portion of the mains AC waveform passed to the load. This is controlled by the "Conduction Time".
Triac (Leading Edge - LE)
Older dimmers use Triacs, which turn ON at any point but cannot turn OFF until current drops to zero. This results in LE phase control, where power is switched ON part-way through the cycle. It works well for incandescent lamps and inductive loads (iron-core transformers, motors) which limit inrush current. It is not ideal for electronic loads (LEDs, electronic transformers) due to potential large inrush current spikes caused by input capacitance.
MOSFET (Trailing Edge - TE)
Digital Dimmers use MOSFETs, which can be turned ON and OFF at any point. This allows TE phase control, where power is turned ON at zero voltage and OFF after the desired conduction time. TE is ideal for modern electronic loads like LED lighting as it minimizes inrush current. It is not suitable for inductive loads, as it can generate high voltage spikes when switching off. TE dimmers have protection to shut down if voltage spikes are detected from incompatible inductive loads.
Some dimmers can operate in both modes ("universal dimmers"), often starting in TE and switching to LE if overvoltage spikes are detected. Automatic mode selection may not always be reliable.
Configure the Device
Configuration and commissioning are done using the "SpaceLogic C-Bus Commission" software via the C-Bus connection. The dimmer can be powered up via USB-C for programming without mains power.
Load Profiles
A Load Profile adjusts dimmer channel settings to tailor dimming behavior. Inbuilt profiles have pre-configured settings. Custom profiles can be saved, shared, and applied to channels or devices. The software enables customization, saving/sharing of endless profiles, and provides guidance for known loads (LED, Electronic Transformer, Incandescent, Sweep Fan, Exhaust Fan).
Dimming Setting Parameters
These parameters within load profiles adjust dimming behavior:
- Minimum Brightness: Sets the level where the load operates or is visibly ON.
- Maximum Brightness: Sets the level where the load exhibits no further change in brightness.
- Soft Turn On: Sets the time for instant ramps from Off to Maximum Brightness. Affects C-Bus ramps.
- Soft Turn Off: Sets the time for instant ramps from Off to ON.
Kickstart
Kickstart is a feature to improve startup behavior for loads that have trouble starting at low brightness settings (e.g., fans). When enabled, if the channel is turned on below a "Kickstart Brightness" level, it fades to that level for a set "Kickstart Duration", then fades to the current level over "Kickstart Recovery" time.
- Kickstart Duration: Sets how long the Kickstart Brightness level is maintained.
- Kickstart Brightness: Sets the minimum brightness level before transition from Off to On.
- Kickstart Turn On: Sets the time for the Kickstart Brightness level (e.g., 0.010 to 0.100 seconds for a fast start).
- Kickstart Recovery: Sets the time to transition from Kickstart Brightness to the set level.
Dimming Curve
A Dimming Curve translates input level to output level. While inbuilt profiles are linear, custom curves can be defined for non-linear perceived brightness changes. For example, a flatter slope at the low end provides more control over dimming.
Min/Max Scaling
This feature scales the input control level range (1-255) to a specified Min-Max range. An input level of 0 is always 0 (off). It's primarily used for limiting the control range where a higher minimum or lower maximum is desired, allowing different control ranges for rooms with the same load profile.
Warn Before Off
An optional courtesy feature. When a C-Bus OFF command is received, the channel initiates a warning (e.g., dims to a pre-set level for a duration) before turning off. The warning duration can be set from 1 to 15 minutes. A second OFF command during the warning sequence turns the channel off immediately.
Logic
The Logic feature combines the primary lighting group level with "logic" lighting groups to determine the final output level. Two logic functions are available:
- "MIN" logic: The output level takes the minimum value of the primary group and all combined logic groups. Useful for limiting brightness at different times (e.g., a schedule setting a lower level after dark).
- "MAX" logic: The output level takes the maximum value of the primary group and all combined logic groups.
Protection Features
Digital dimmers incorporate several protection features to maximize device life and provide early diagnosis of adverse environmental factors via C-Bus measurement and error reporting applications.
Thermal Wind Back and Recovery
If a channel's internal temperature exceeds 80°C, the dimmer periodically reduces conduction time (brightness) until the temperature drops below 80°C. Brightness recovers when the temperature remains stable. This state is indicated on the channel indicator.
Over Temperature (Thermal Shutdown)
If the channel temperature reaches 100°C, the channel shuts down and remains off until toggled. This status is indicated on the channel indicator and reported via the Error Reporting Application.
Over Current
Each channel has over-current protection against faults like wiring issues, filament failure, or excessive load. If triggered, the channel shuts down and indicates over-current status. It remains off until toggled.
Incompatible Load
If the dimmer channel detects an incompatible load with the selected mode or load profile, the channel turns off and indicates an "Incompatible Load Error".
Mode Error
In TE mode, if inductive spikes are observed, suggesting an inductive load, the channel shuts down and indicates a "Mode Error".
Indicators
Unit Indicator
| LED Indication | Status |
|---|---|
| Green LED is ON | Unit powered; C-Bus power supply Enabled |
| Yellow LED is ON | Unit powered; C-Bus power supply Disabled |
| LED OFF | No power to device |
| Red LED is ON | Unit powered; Configuration Error |
| Slow Flash, Red/Green | Internal temperature has exceeded overtemperature threshold; C-Bus power supply enabled |
| Slow Flash Red, Yellow | Internal temperature has exceeded overtemperature threshold; C-Bus power supply disabled |
| Override Flash Red, Green | Internal temperature has exceeded overtemperature threshold; Override Active, C-Bus power supply enabled |
| Override Flash Red, Yellow | Internal temperature has exceeded overtemperature threshold; Override Active, C-Bus power supply disabled |
| Override Flash Off, Green | Override active; C-Bus power supply enabled |
| Override Flash Off, Yellow | Override active; C-Bus power supply disabled |
| Fast Flash, Green | Secondary firmware update in progress |
C-Bus Indicator
| Action | LED Indication | Status |
|---|---|---|
| Solid (not flashing) | Regardless of color | C-Bus Voltage OK |
| Steady Flash | Regardless of color | C-Bus Voltage marginal (15-20 V) |
| Short Flash | Regardless of color | C-Bus Voltage critical (<15 V) |
| Red | Short Flash | No C-Bus clock detected, Host Online |
| Green | Short Flash | C-Bus clock detected, Host Online |
| Yellow | Short Flash | C-Bus clock detected, Host Offline |
| Off | N/A | No C-Bus voltage present or unit not powered |
Channel Indicator
| Action | LED Indication | Status |
|---|---|---|
| Short-Press on the channel (< 0.5 second) | On, Red | Channel On, Leading Edge mode |
| Short-Press on the channel (< 0.5 second) | On, Yellow | Channel On, Trailing Edge mode |
| Slow Flash, Red | N/A | Channel shutdown due to incompatible load or mode error |
| Off | N/A | Channel off |
| On, Red | N/A | Channel Offline, Normally due to no mains supply to channel bank |
| Fast Flash, Red | N/A | Channel shutdown due to over current |
| Fast Flash, Yellow | N/A | Channel shutdown due to over temperature condition |
| Slow Flash, Yellow | N/A | Channel operating at reduced setting due to over temperature condition |
Firmware Update
The SpaceLogic C-Bus Commission software will notify if a firmware update is required. The update requires a connection to the USB-C connector on the dimmer and is performed using the software. All required firmware files are included and authenticated with the latest software release.
Measurement Application
The Measurement application broadcasts values of physical parameters monitored by C-Bus devices. These messages include Device ID, channel number, measured value, and units. The dimmers provide measurements for Lamp Running Times, Channel Operating Temperatures, Power Supply Load Current, C-Bus Voltage, and Unit Operating Temperature.
| Channel Number | Quantity | Units |
|---|---|---|
| 0-7 | Channel 0-7 Lamp Running Time | Hours |
| 128-135 | Channel Operating Temperature | Degrees Celsius |
| 252 | Power Supply Load Current | Amperes |
| 253 | C-Bus Voltage | Volts |
| 254 | Unit Operating Temperature | Degrees Celsius |
Measurements can be configured to broadcast periodically (1-254 minutes) or via trigger groups. Lamp Running Time measurements can be reset to zero using a Trigger Group and Trigger Event.
Error Reporting Application
The C-Bus Error Reporting application notifies and manages error and status information detected by C-Bus devices. Reports include source, severity, and nature of the error. A SpaceLogic C-Bus Automation Controller can display, acknowledge, and clear these reports. There are 5 Error Reporting Modes (0-4) controlling report generation.
Modes
| Mode | Types of errors | Description |
|---|---|---|
| Mode 0 | OFF | Neither live reports nor regular reports are generated. |
| Mode 1 | All channels: Most Recent Errors only | Live reporting enabled; a change in error state is emitted when it occurs. Regular reports can be configured or disabled by setting the interval to zero. |
| Mode 2 | All channels: Most Recent and Most Severe Errors | Same as Mode 1, but also includes tracking of the Most Severe errors for each channel. |
| Mode 3 | Minimum reporting: Most Recent Errors only | Same as Mode 1, but excludes individual channel reports. The aggregate channel is included. |
| Mode 4 | Minimum reporting: Most Recent and Most Severe Errors | Same as Mode 2, but excludes individual channel reports. The aggregate channel is included. |
The following channel error status information is available:
- Mode Error: Channel shut down due to incompatible load with selected mode.
- Incompatible Load: Channel shut down due to incompatible load with load profile.
- Over-temperature Windback active: Channel operating at reduced point due to excessive temperature.
- Over-temperature Shutdown: Channel shut down due to extreme temperature.
- Over-current Shutdown: Channel shut down due to extreme current overload.
- Channel Offline: Channel is not responding.
- Channel Overridden: Channel overridden by local override, C-Bus priority disabled.
New devices include an aggregate channel (251) reporting the logical OR of all channel errors. Devices with a C-Bus Power Supply include a Power Supply Error channel (250) reporting Load warning, Over-current, or Current Limit conditions.
Status and Failure Monitoring and Reporting
All status information for the dimmers' channels can be viewed in the SpaceLogic C-Bus Commission software property window of the dimmers.
Specifications
| Parameter | Description |
|---|---|
| Nominal Mains Voltage and Frequency | 230 V ac ±10%, 50 Hz ±3 Hz; 110 V ac ±10%, 60 Hz ±3 Hz |
| C-Bus Input Operating Voltage | 20 - 36 V dc |
| C-Bus Input Operating Current | 20 mA |
| C-Bus Power Supply (if enabled) | 200 mA at 27-35 V dc |
| Storage Temperature | 20 - 60° C |
| Load Rating | 8 channel: Up to 1 A per channel; 4 channel: Up to 2 A per channel |
| Protection Rating | IP20 |
| Dimmer Technology | Adjustable per channel - Trailing edge (TE) / Leading edge (LE) |
| Compatible Loads | Dimmable LED lamps and luminaires, incandescent/ halogen lamps, halogen lamps with electronic transformers, halogen lamps with dimmable iron core transformers |
| Operating Temperature | -5 to 55 °C (with derating) |
| Operating Humidity | 10% to 93% Non-condensing |
| Dimensions (WxHxD) | 216 x 92 x 63 mm (8.5 x 3.62 x 2.48 inches) |
| Mains terminals | Accommodates 2 x 1.5 mm² or 1 x 2.5 mm² (2 x 16 AWG or 1 x 13 AWG). Screwdriver: Philips PH1. |
| C-Bus connections | 2 x RJ45 Connectors |
Troubleshooting
| Symptom | Possible indication (on the front panel of the dimmer) | Possible Causes | Solution |
|---|---|---|---|
| Reduced brightness observed in the dimmer channel outputs | Channel Indicator: Slow Flash, Yellow | Channel is operating at reduced setting due to over temperature condition (normally due to excessive load and/or inadequate ventilation and/or high operating temperature) | Reduce the load on the channel and/or total load on the unit; Improve enclosure ventilation to reduce the temperature of the enclosure. |
| Dimmer Channel does not work | Channel Indicator: Fast Flash, Yellow | Channel shutdown due to over temperature condition (normally due to excessive load and/or inadequate ventilation) | Improve enclosure ventilation to reduce ambient temperature. |
| Dimmer Channel does not work | Channel Indicator: Fast Flash, Red | Channel shutdown due to over current (normally due to excessive inrush or load/wiring fault (short circuit)) | Check the wiring, rectify the issue and then turn on the dimmer to restore it to its normal operating state. |
| Dimmer does not work | Unit Indicator: Slow Flash, Red/Yellow | Internal temperature has exceeded overtemperature threshold; C-Bus power supply enabled | Improve enclosure ventilation to reduce ambient temperature. |
| Dimmer does not work | Unit Indicator: Slow Flash, Red/Green | Internal temperature has exceeded overtemperature threshold; C-Bus power supply disabled | Improve enclosure ventilation to reduce ambient temperature. |
| Dimmer does not work | Unit Indicator: Red | Stored configuration is not compatible with firmware version (can occur after a major firmware version update) | Redeploy the configuration of the dimmer via the SpaceLogic C-Bus Commission software. |
| Dimmer ignores C-Bus commands | C-Bus indicator: Solid Red; Unit Indicator: Blinking | No C-Bus clock detected | Enable C-Bus system clock generator. |
| Override is active | N/A | Override is active | N/A |
| Cannot Turn On the channel | Channel Indicator: Solid Red | Channel Offline (Normally due to no mains supply to channel bank. Example: The breaker has tripped or the supply has not been connected. If not all channels in the bank are affected, it could be the result of a failed channel firmware update) | Ensure the wiring is done according to the instruction sheet. Check breakers if banks have independent circuit protection. If failed firmware update suspected, re-perform the channel firmware update with the SpaceLogic C-Bus Commission software. |
| Cannot turn ON/OFF the C-Bus Power supply from the front panel | Not applicable | Power Supply Toggle from the front panel is disabled by the Software | Change the configuration of the dimmer via the SpaceLogic C-Bus Commission software to enable C-Bus power supply toggle from indicator buttons. |
| Can not enable/ disable the C-Bus clock from the front panel | Not applicable | System Clock Toggle from the front panel is disabled by the Software | Change the configuration of the dimmer via the SpaceLogic C-Bus Commission software to enable System Clock toggle from indicator buttons. |
| No C-Bus Power | Unit Indicator: OFF; C-Bus indicator: Steady Flash | No mains power supply | Advise to check mains voltage. |
| Low Voltage | C-Bus indicator: Short Flash | C-Bus cable not connected | Advise to check C-bus cable. |
| Reduced brightness observed in the channel outputs | Not applicable | Jumper link not fitted for 110 V; Overload on the network; Low mains voltage; Voltage drop over long distance of cable run | Advise to check the connection; Enable C-Bus Power supply in additional units; Advise to check mains voltage; Low voltage indicator LED provided installer training. |
| Error message after switching ON the dimmer channel | Not applicable | Warn before off is activated; Mixing the loads; Incorrect dimming mode | Expected behavior if warn-before is enabled; Check for load uniformity; Use the channel button to change to LE mode. |
| The lights are flickering | Not applicable | The default load profile might not be suitable for this light; Lights can be nondimmable light sources; If it occurs at specific times, usually in the evening, there maybe ripple signalling on the grid | Customize the load profile and dimming curve to achieve the desired dimming outcome; Ensure the load that is connected to the dimmer is a dimmable load; Choose a different type of lamp which is less affected by ripple, or install a ripple filter. |
| Cannot find the dimmer on the C-Bus network | Not applicable | Unit is in bootloader state; No mains power supply; C-Bus cable not connected; Jumper link not fitted for 110 V | Cycle the power on the dimmer to exit bootloader; Check there is mains power to the unit; Check that the C-bus cable is connected properly; Check that the 110 V wire link is connected properly. |
| It is difficult to set the brightness level at the bottom or top end of the dimming | Not applicable | The default 1:1 dimming curve may not be suitable for the loads profile | Customize the load profile and dimming curve to achieve the desired dimming outcome. |
| Lights flashes brightly at start up | Not applicable | The default load profile is not suitable for the load or incorrect setting for Kick-start | Customize the default load profile with minimum and maximum brightness to make the lighting behavior suitable with the load; Ensure there is no incorrectly configured KickStart parameter set. |
| The lights do not turn on at lower brightness level set by C-Bus | Not applicable | The default load profile is not suitable for the load | Customize the default load profile with minimum and maximum brightness to make the lighting behavior suitable with the load; Consider configuring Kick-Start. |
| Dimmer does not work after firmware update | Not applicable | Interruption during firmware update | Check the condition of the USB communication cable used between the laptop and the device and ensure good quality cable is used for firmware update, or try a shorter cable. Ensure update process is not interrupted, and wait for software to confirm process is complete before removing the cable. Check the USB cable connection and ensure it is fully inserted in the USB-C connector. If instructed by the software, press the reset button for recovery purposes. |
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