System Communication Unit SCU


Part of EN 54-16 approval

The System Communications Unit serves as a digital audio memory for the VARIODYN D1 system. It is possible to record and playback multiple audio data streams simultaneously.

The connection to the other VARIODYN D1 modules is made via the Ethernet, and is permanently monitored.

The audio storage for critical evacuation alerts and notifications is done in accordance with IEC EN 60849 in a non-volatile flash memory. Depending on the format, storage capacity is approx. two hours.

Additional prerecorded audio messages such as announcements, signals, or commercial texts are stored on a hard disk. Depending on the format, storage capacity here is approx. 1000 hours.

The SCU can also be used for the logging and recording of announcements. These are also stored in the memory, and logged with date, time, and activation details. The automatic buffer makes it possible to transmit announcements that cannot be played to all targets as soon as these targets become available.

  • Ethernet-Connection 100 Mbit/s
  • Network connection
  • 24 V DC Emergency power

Display Indicators

Note: Not for safety related voice messages. Safety related voice messages must be stored in DOM.
Replacement for 583381.22!
  • EN 54-16 certificated
  • Digital audio memory for VARIODYN® D1
  • Networkable via Ethernet
  • Can be used for the logging and recording of announcements
  • Automatic buffer and repetition of interrupted announcements
  • 24 V DC emergency power supply
Emergency power supply
Rated voltage
24 V DC
Power consumption
24 W
Common technical data
Rated voltage
90....265 V AC
Rated frequency
47 ... 63 Hz
Flash memory approx. 2 h
Hard drive capacity approx. 1000 h
Ambient temperature
-5 °C ... 45 °C
Air humidity
15 ... 90 %
Color gray, smilar to RAL 7016
Weight approx. 3 kg
W: 483 mm H: 44 mm D: 360 mm (1 HU, 19")
Declarations of performance DoP-20997130701
47 ... 63 Hz
  • 583486 Patch cable Cat5, 1 m yellow (ETH)
  • 583487 Patch cable Cat5, 2 m yellow (ETH)
  • 583488 Patch cable Cat5, 3 m yellow (ETH)
  • 583703 mounting set 1