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4 OPERATION
USER MANUAL
VORTEX 6, 4, 2.6 and 200V
P.20
4.4.3 Mains Failure Detection
Mains Failure Detection is always operative. When the mains supply is
interrupted for about 2 mains cycles, the amplifi er will switch off. When the
mains voltage returns to a normal value, a soft start occurs.
4.4.4 Fuse Protection
The average mains current can peak temporarily, depending on the load
impedance and type of signal, at values several times higher than the nominal
value allowed by the fuse protection.
Continuous monitoring of the fuse protection status allows the conditions that
would trigger the fuse protection to be predicted. In order to avoid shut-down
of the amplifi er due to current overload, the amplitude of the input signals will
be limited.
The limitation of the input signal allows a 6 kW VORTEX power amplifi er to
be operated reliably from a mains power supply of 230 V/16 A (120 V/30 A;
100 V/30 A).
4.5 Main SMPS Protections
4.5.1 Over Current Protection
Main SMPS (Switched Mode Power Supply) transformer current of your VORTEX
is continuously monitored. If over current occurs, the main SMPS immediately
stops working. Should there be an internal failure, this feature prevents other
parts being damaged.
4.5.2 Thermal Protection
The temperature of the main SMPS transformer of your VORTEX is permanently
monitored. If the temperature exceeds 85 °C, the microchip reduces the input
signals of both channels. If the temperature surpasses 100 °C, the main SMPS is
switched off. The On LEDs will start a blinking sequence corresponding to this
malfunction. (See 6 Troubleshooting)
4.6 Fans
The fans mounted in your VORTEX operate permanently, but as long as the
temperature remains below 40 °C, they run at their slowest speed and can
hardly be heard. The highest detected temperature from either channel controls
the speed of the fans. Above 40 °C the speed is increased until it reaches its
maximum value.