Elation PRB201, User Manual

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FAN CONTROL AND LOW NOISE OPERATION
The Proteus Brutus is a high-performance fixture suited for multiple applications. For noise
critical environments such as Theater, Opera, or Orchestral Halls, it offers various fan operation
modes which remove unwanted noise distractions for the audience and performers. Fan Modes
can be changed remotely via the DMX control channel, allowing the fixture to offer high output
or whisper-silent operation at a moment’s notice. All Fan Modes smoothly transition over a
Auto (Default) – Fans only run at the speeds needed to keep the LED engine within a safe
temperature range, and ensures optimal performance of the fixture. They will turn off if
possible; for example, when the fixture is dimmed to a low intensity. Fans sense the ambient
and fixture temperature and will, at all times, try to keep noise levels at a minimum. The fixture
output will only be reduced when the LED engine cannot be cooled to its safe operating range
due to a high ambient temperature.
NOTE: This mode is recommended for daily operation.
High –
Fan speeds are increased throughout the fixture for the most efficient cooling. This
mode will increase wear on the fans and should only be utilized in exceptional circumstances.
Fans will always run, even if the fixture is dimmed. Fixture output is kept at 100% unless the
LED engine temperature reaches an unsafe temperature, at which point the fixture will reduce
power carefully to ensure continued safe operation. This mode is only required in very high
ambient temperatures when automatic fan speed adjustments are not desired.
Low - For very critical noise environments, the fixture offers this mode, and two additional
Low Noise Modes for silent operation: Studio and Muste. In Low mode, the fixture output will
be reduced, yet due to the extremely high luminous flux, the fixture still offers outstanding
performance. In Low Noise Mode, all parameters of the fixture operate more quietly with
reduced fan speeds.
Studio – Fan speeds are reduced throughout the fixture for a lower noise profile. The fixture
output is also reduced to approximately 80%. This mode should be sufficient for most uses
where lower noise is required.
Mute – All but one fixture fan is turned off for whisper-quiet operation. The fixture LED power
output is reduced to 25%.
Mode dbA at 1m LED off dbA at 1m Dimmer 100%
Fan Control - Auto (Default) 39 46
Fan Control - High 50 59
Fan Control - Low 38 40
Low Noise – Studio 34 37
Low Noise – Mute 32 33