
12 13
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 red output
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 grey (–) connection for DimA.
The green wire should be connected to the grey (–) terminal for DimB.
The blue wire should be connected to the grey (–) terminal for DimC.
If using an RGBA, RGBW, RGBA, RGBTD (T is tungsten or warm white, D is
daylight or cool white), or other multi-channel xture 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 xtures or LED devices, connect the rst one to DimA, B, and
C, and connect the second to DimD, E, and F.
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Choosing Other Dimmer Curves or Proles
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 dierent 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 ashes 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)