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DA 480-R User manual v.1
5
Protections
5.1 Speakers protection
DA 480-R ha an output protection relay that disconnect speakers in case of amplifier fault.
During boot the device makes a voltage test, checks the optimal working of the power
amplifiers and, only after, speakers connector relay will be enabled.
5.2 Thermal protection
When the amplifier's internal temperature reaches high levels, the cooling fan will be activated
with variable speed depending on the temperature.
In case the amplifiers reach the maximum allowed temperature, the thermal protection will be
activated and the involved channels will be deactivated, switching them back on when an
acceptable running temperature is reached. This condition is indicated with a FAULT LED.
5.3 Over-current and short-circuit protection
The device has inside an "high-currents" or "output short-circuit present" protection circuit, in
those cases the involved channels will be switched off with FAULT LED indication.
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