4 OPER
ATION
USER MANUAL
VORTEX 3 QUADRO
P.22
USER MANUAL
VORTEX 3 QUADRO
P.23
4.5 Mains Protections
4.5.1 Inrush Current Limitation
Within 2 seconds of the
VORTEX
being switched on, the inrush current limiter
will increase mains current from nearly zero to nominal value. This value
depends on program material, output level and speaker loads.
4.5.2 Mains Over Voltage Detection
Mains over voltage detection is always operative. When the mains voltage
exceeds approx. 267 V (230 V operation) or 134 V (120 V operation), the amplifier
will be switched off. The system will try to start in intervalls and will return with
a soft start when the regular mains voltage returns.
4.5.3 Mains Failure Detection
Mains failure detection is always operative. When the mains supply is inter-
rupted for about 2 mains cycles, the amplifier will be switched off. When the
mains voltage returns to a normal value, a soft start occurs.
4.5.4 Fuse Protection
The average mains current can peak temporarily, depending on the load
impedance and type of signal, at values significant 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 amplifier due to current overload, the amplitude of the input signals will
be limited and by hard overloads the amp will be muted for the time.
The limitation of the input signal allows a 6 kW
VORTEX
power amplifier to be
operated reliably from a mains power supply of 230V / 16 A (120 V / 30A).
4.6 Main SMPS Protections
4.6.1 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.
4.6.2 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)
4.7 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.
