Dynacord DPA 8150, User Manual

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41 x 6 W
8 x 30 W
Figure 6.3: Example of a DPA 8225 with a load of 8 x 30 W = 240 W or 41 x 6 W = 246 W at the outputs on
the output stage
Danger!
The outputs can accept hazardous contact voltages during operation (> 34 V peak). For this
reason, the connected speaker circuits must be installed in accordance with the applicable
safety regulations. The VDE specification DIN VDE 0800 must be observed when setting up and
operating 100-volt speaker systems. Particularly with 100-volt speaker systems that are used
for alarm purposes, all protective measures must be designed for measuring class 3.
Integrated relays
The DPA output stages have integrated relays that can be configured using IRIS-Net. Whenever
the protective circuit of an output channel is activated (for example due to overload or
excessive temperature), the associated output relays are also switched off. This happens
regardless of how the relays are currently being used. When returning to normal operation, the
relays are released again for the configured task.
Usage options
The way in which the relays are used can be adapted to the desired speaker topology:
•
Output relay: If not configured otherwise, the relays become output relays. After the
amplifier is switched on, all output relays are switched on with a time delay
• Line relay: If configured as a line relay, the relays are activated only when audio signals
are brought into the speaker line/zone
• A/B relay: When relays are used as an A/B relay, it is possible to set up an A/B speaker
zone
The following diagrams show the internal circuitry of the relays integrated into the various
types of output stages.
16 en | Safety information PROMATRIX 8000 POWER AMPLIFIER
19-Aug-13 | 03 | F01U217494 User manual