2N Helios IP Installation Manual - Connection To Lan
Electric Installation
2.3
15
Connection to LAN
Connect 2N
®
Helios IP Audio Kit to the LAN using an RJ-45 terminated UTP/STP cable
(of category Cat 5e or higher). As the device is equipped with the Auto-MDIX function,
you can use either the straight or crossed cable version.
2N
®
Helios IP Audio Kit is equipped with two LAN interfaces (LAN1 and LAN2) and an
integrated Ethernet switch. You can use any of the two interfaces for LAN connection.
LAN1 is the only interface provided with PoE.
LAN2 helps connect another LAN device on the installation site. This interface is not
equipped with PoE.
Note
2N
®
Helios IP Audio Kit does not allow you to feed another connected
device via PoE. The integrated PoE function is intended for the
2N
®
Helios IP Audio Kit supply only.
Connection of External Power Supply
2N
®
Helios IP Audio Kit can be supplied either from an external 9-36/2A DC source or
directly from the LAN provided with the PoE 802.3af supporting network elements.
External Power Supply
Connect the external 12V power supply to the DC in terminals. Use safety low-voltage
voltage (SELV, 9-36V) dimensioned for the minimum current consumption of 1.5A
(Part No. 91341481E, e.g.) to make your device work correctly.
PoE Supply
2N
®
Helios IP Audio Kit is compatible with the PoE 802.3af technology (Class 0 –
12.95W) 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, Part
No. 91758100E, between your 2N
®
Helios IP Audio Kit and the nearest network
element. Connect your 2N
®
Helios IP Audio Kit to the LAN via the LAN1 interface to
supply it successfully.
Caution
In case you feed your 2N® Helios IP Audio Kit via PoE or from a limited-
power external power supply, monitor the power consumption of the
whole system. With regard to the PoE 802.3af capacities and efficiency of
the switched-mode power supplies in the device, the maximum possible
device input is approximately 12W. An overload of the PoE source usually
results in PoE disconnection and, subsequently, 2N® Helios IP Audio Kit
restart.
The 2N® Helios IP Audio Kit consumption at relax (power amplifier
inactive, no load switched on LED1-3 and OUT1-2 outputs) is up to 2W.
The maximum power amplifier consumption is determined by the current
loudspeaker volume level and impedance (up to 10W for a 4Ω
loudspeaker). The real consumption is typically lower and depends on the
characteristics of the signal to be amplified.
If you intend to connect a considerable load to the OUT1 and OUT2
outputs, make sure that the total input does not exceed the above