2N 9154100 Installation Manual

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Contents

2N 9154100 Installation Manual Manual pdf 17 page image

172N TELEKOMUNIKACE a.s., www.2n.cz®Connection of External Power Supply2N® Helios IP Audio Kit can be supplied either from an external 9–36 / 2 A DCVsource or directly from the LAN provided with the PoE 802.3af supporting networkelements.External Power SupplyConnect the external 12 V power supply to the DC in terminals. Use safety low-voltagevoltage (SELV, 9–36 V) dimensioned for the minimum current consumption of 1.5 A(Part No. 91341481E, e.g.) to make your device work correctly.PoE Supply2N® Helios IP Audio Kit is compatible with the PoE 802.3af technology (Class 0 –12.95 W) and can be supplied directly from the LAN via compatible network elements.If your LAN lacks such compatible elements, you can insert a PoE injector, PartNo. 91758100E, between your and the nearest network2N® Helios IP Audio Kitelement. Connect your to the LAN via the LAN1 interface to2N® Helios IP Audio Kitsupply it successfully.Connection of LED Indicators2N® Helios IP Audio Kit is equipped with three independent current LED controloutputs (LED1+, LED2+ and LED3 terminals). All of them are current outputs (20 mA±, up to 12 V). You can connect the LEDs directly to the terminals of these outputs oruse LEDs with serial resistors. Mind the polarity while connecting the LEDs to makeyour device work properly.CautionIn case you feed your via PoE or from a2N® Helios IP Audio Kitlimited-power external power supply, monitor the power consumption ofthe whole system. With regard to the PoE 802.3af capacities andefficiency of the switched-mode power supplies in the device, themaximum possible device input is approximately 12 W. An overload of thePoE source usually results in PoE disconnection and, subsequently, 2N®restart.Helios IP Audio KitThe consumption at relax (power amplifier2N® Helios IP Audio Kitinactive, no load switched on LED1–3 and OUT1–2 outputs) is up to 2 W.The maximum power amplifier consumption is determined by the currentloudspeaker volume level and impedance (up to 10 W for a 4 Ωloudspeaker). The real consumption is typically lower and depends on thecharacteristics of the signal to be amplified.If you intend to connect a considerable load to the OUT1 and OUT2outputs, make sure that the total input does not exceed the abovementioned limit (12 W for PoE). If the PoE supply fails to provide sufficientpower for the specific application, use a more powerful external source tomake your device work perfectly.