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Dimming and Controlling Multicolor LEDs
The illustration on the previous page shows an RGB color mixing LED device.
There are 4 wires: a black wire for the 12V common positive (+), and three
colored wires, red/green/blue, for the three unique negative leads. The color
of the common positive may vary, it is not always black.
The common positive should be connected to one of the two
terminals. All of the (+) terminals are connected together inside the
LumenDim6. The two (+) terminals make it easy to connect two RGB light
sources, each with their own common positive wire.
Dimming happens on the negative (–) connections.
The red wire should be connected to the
The green wire should be connected to the
The blue wire should be connected to the
If using an RGBA, RGBW, RGBA, RGBTD (T is tungsten or warm white, D is
daylight or cool white), or other multi-channel fixture or LED device, the
additional wires (often amber, yellow, warm white, or cool white) should be
connected to the
grey
(–) terminals for DimD, E, and F as needed.
If using two RGB fixtures or LED devices, connect the first one to DimA, B, and
C, and connect the second to DimD, E, and F.
red
output
grey
(–) connection for DimA.
grey
(–) terminal for DimB.
grey
(–) terminal for DimC.
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Choosing Other Dimmer Curves or Profiles
The LumenDim6 default is the ISL dimmer curve, which is best for LEDs. This is
also the curve that is selected with RC4 OneTouch™ when the DMX level is at
30%.
There are dimmer curves for different kinds of lamps, motors, and more.
Detailed information can be found online by searching dimmer curves at
http://rc4.info/.
The most common curves are selected using these DMX channel levels and
RC4 OneTouch™ with the Set buttons as outlined on page 9:
Non-Dim
100% (80% or higher)
Use for relays, solenoids, air valves, etc.
Linear
70% (60 - 79%)
For incandescent, halogen, tungsten lamps.
ISL Fast
50% (40 - 59%)
For LEDs when fast blinks and flashes are required.
RC4 Digital Persistence™ is disabled.
ISL Slow
30% (20 - 39%)
Best for typical LED applications, with RC4 Digital Persistence™.
For super smooth 19-bit dimming. (default setting)
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