12
Operating manual
AC-A3016
3. Under-voltage protection:
If the mains voltage from the wall socket is too low over a prolonged period (< 215V), thus
compromising the performance of the active power distributor, the device will switch off the
plug sockets (pos. 7 – 10). The message "Mains voltage too low" appears in the display (item
11).
4. Over-temperature protection:
The active power distributor is equipped with a fan to facilitate the dissipation of heat during
high-output operation. This fan is regulated by the temperature of the device. If the fan cannot
provide sufficient cooling because the operating temperature is too high, the device is not
properly positioned or output is too high over a prolonged period (diagram 1, page 9), the
active power distributor can switch off. In order to allow counter measures to be carried out
(e.g. switching off components not in use, lowering the volume), from 65°C the temperature is
automatically indicated. If, however, the active power distributor still becomes too hot
(>75°C), the sockets are switched off and the message "Device too hot" appears in the
display. Once the temperature drops below 65°C, the sockets switch on again and the device
can be operated normally.
5. Overload protection:
If the active power distributor reaches its maximum output limit, it will switch off. This may
result from connecting too many devices when the overall output exceeds 3600 W or if the
active power distributor has to compensate for excessive differences in voltage due to
insufficient power supply from the wall socket. In this case, the message "Output too high"
appears in the display.
6. Current-limit control:
If devices are connected which require a starting current that is too high (> 100 Amps), the
active power distributor will attempt to activate the connected device via the integrated
current limiter. You may hear the internal relays clicking when this happens. If this attempt
should fail, the active power distributor switches the sockets off and the message "Current too
high" appears in the display.
7. Bridge mode:
The power distributor is equipped with a bridge mode to protect the voltage regulators from
critical loads. It is automatically activated if the maximum permissible peak current is
exceeded, e.g. when a large amplifier is connected. The active power distributor returns to
normal operation after approximately 3 min.
This mode is also active for 3 min. after switching on the system.
