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KNX Actuators / MSA-810 User Manual

RGB and RGBW dimmer

RGB and RGBW channel configuration, colour dimming, staircase options and feedback.

elausys · 16 September 2026
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Features

  • Blocking function can be set by a group object for each channel to prevent operating the channel from the bus.
  • HSV and RGB Color setting and feedback.
  • HSV Dimming relative and absolute objects.
  • Timing functions (switch-on delay, switch-off delay, staircase duration).
  • Switch on/off speed and dimming speed adjustable.
  • Staircase function. Option to extend the staircase duration and to allow manual switch off during the staircase delay.
  • Up to 4 internal scenes configurable per output.
  • Day/Night operation mode with selected behavior when switching on and switching off for each mode.

Parameters

PARAMETERVALUESDESCRIPTION
Scene control: Scene 1 Scene 2 Scene 3 Scene 40 (default) 1 to 64When set to 0 the channel will ignore corresponding scene. When set to another value, the channel will respond to this scene number. Channel state can be store using the scene group object for further recall.
Switch ON delayNo delay 250ms to 60 min.The ON or OFF delay causes a delayed switch of the channel. At sending a new switch signal to the channel, first the adjusted delay time expires and afterwards the channel will be switched.
Switch ON/OFF speed1s (default) 0 to 60sDuration to go from 0 to 100% during switching on or off.
Dimming speed5s (default) 0 to 60sDuration to go from 0 to 100% while dimming.
Dimming curveLinear (default) Logarithmic Gamma 1 Gamma 2 Gamma 3 Gamma 4 Gamma 5 DaliDimming curve depending on the driven load.
Behavior on ON telegram (Day)Fixed value (default) Last value No reactionDefine the output value when the channel is switched ON during day or if day/night switch is disabled.
Switch ON value (day)#FFFFFF (default) #000000-#FFFFFFFixed value after switched ON during day or if day/night switch is disabled.
Day/Night switchDisabled (default) EnabledEnable or disable the use of the day/night mode.
Behavior on ON telegram (Night)Fixed value (default) Last value No reactionDefine the output value when the channel is switched ON during night if day/night switch is enabled.
Switch ON value (Night)#FFFFFF (default) #000000-#FFFFFFFixed value after switched ON during night if day/night switch is enabled.
Behavior on OFF telegram (Night)Fixed value (default) No reactionDefine the output value when the channel is switched OFF during night if day/night switch is enabled.
Switch OFF value (Night)#000000 (default) #000000-#FFFFFFFixed value after switched OFF during night if day/night switch is enabled.

In case the staircase light function is enabled the following additional parameters are available:

PARAMETERVALUESDESCRIPTION
Staircase duration1s to 12hTotal duration of the staircase lighting. The channel is automatically switched OFF after this delay.
Extend staircase durationDisabled Enabled (default)When enabled, the staircase duration is extended each time a ON telegram is received on the staircase object.
Manual switching OFFDisabled (default) EnabledWhen enabled, the channel is switched OFF when receiving a OFF telegram on the staircase object.

Communication Objects

NRNAMEFUNCTIONSIZEFLAGSTYPE
1BlockOn/Off1 bitCRWDPT_Enable
2SceneScene1 byteCWDPT_SceneControl
3Switch On/OffOn/Off1 bitCWDPT_Switch
4StaircaseOn/Off1 bitCWDPT_Start
5State On/OffOn/Off1 bitCRTDPT_Switch
6HSV Hue (H) - Dim relativeDim4 bitsCWDPT_Control_Dimming
7HSV Hue (H) - Dim absoluteAngle1 byteCWDPT_Angle
8HSV Hue (H) – State Dimming valueAngle1 byteCRTDPT_Angle
9Night (1) / Day (0) SwitchNight/Day1 bitCWDPT_Switch
11RGB Color settingPercent3 bytesCWColour_RGB
12RGB Color valuePercent3 bytesCRTColour_RGB
16HSV Saturation (S) - Dim relativeDim4 bitsCWDPT_Control_Dimming
17HSV Saturation (S) - Dim absolutePercent1 byteCWDPT_Scaling
18HSV Saturation (S) - State Dimming valuePercent1 byteCRTDPT_Scaling
19HSV Color settingPercent3 bytesCWColour_RGB
20HSV Color valuePercent3 bytesCRTColour_RGB
24HSV Brightness (V) - Dim relativeDim4 bitsCWDPT_Control_Dimming
25HSV Brightness (V) - Dim absolutePercent1 byteCWDPT_Scaling
26HSV Brightness (V) - State Dimming valuePercent1 byteCRTDPT_Scaling

Manual navigation

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Frequently Asked Questions

Where are the colour-control objects listed?

The communication-object table lists the commands and feedback objects available for the RGB and RGBW configuration.

Which electrical limits apply to an LED extension?

Use the specific LED extension datasheet and wiring diagram for the supply, connected loads and channel ratings.

Keep exploring

Find the other guides for this product in the documentation.

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