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Overload Protection
There are three types of overload protection:
Hardware Overload
This overload is triggered when the current to the power amplifier exceeds 5.7 Amps average.
When triggered, the power amplifier is shutdown, causing the 'Overload' front panel LED to
illuminate. To restart the amplifier, an enable command is required.
At power-on, the power amplifier is shutdown by default and requires an enable command to start.
Load Power Dissipation Overload
This overload is triggered when the real power dissipated by the load exceeds the threshold
defined in the user interface. An enable command is required to clear this overload.
Amplifier Power Dissipation Overload
This overload is triggered when the real power dissipated by the amplifier exceeds 130 Watts. An
enable command is required to clear this overload. Triggering this overload usually means that the
load impedance is poorly matched to the output voltage and current range of the amplifier.
Thermal Overload
This overload is triggered when the heatsink temperature exceeds 70C. An enable command is
required to clear this overload. Check the fan and heatsink for blockages.
PDUS210 V4
18
Modified 6/02/2021
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