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External Full On/Emergency (Full Bright)
The a-2000 cabinet has an external trigger which can be used to force selected
dimmers to
full bright
.
The external full bright input is enabled with a contact closure between terminals
on TB7.
The software feature is called External Full Bright, however the label of
TB7 is called "Emergency" (formerly "All On").
• If the closure is open, the system operates normally.
• If the closure is closed, the system overrides all channels, that have been
programmed to respond to External Full Bright, to 100% and overrides the
remainder of the channels to 0%.
• When the closure is re-opened, the channels return to their previous levels
Factory default programming has all channels to respond to an external
full bright command
One application of this feature is shown in Figure 23. If any one of the phases is
low in the "Normal" cabinet, the phase dropout relay relaxes, closing the "All On"
contact closure.
For Example: If circuits 1, 2 and 3 are on at 50% (and are programmed to
respond to the external full bright command), they will go to 100%. If channels 4,
5 and 6 are at 50% (and not programmed to respond to external full bright), they
will go to 0% to unload the emergency generator.
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