2N Helios IP, Руководство по установке

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Warning
When you connect a device containing a coil, such as a relay or an
electromagnetic lock, it is necessary to protect the intercom against voltage
peak while switching off the induction load. For this way of protection we
recommend a diode 1 A / 1000 V (e.g., 1N4007, 1N5407, 1N5408) connected
antiparallel to the device.
Main Unit
Power Supply Connection
2N Helios IP Base
®
can be powered either from an external 12 V / 2 A DC source or
directly from the LAN equipped with PoE 802.3af supporting network elements.
External power supply
Use a 12 V ±15 % SELV supply dimensioned to the minimum current consumption of 2
A (Part No. 91341481E) to make your system work reliably. This power supply provides
with 24 W for feeding of the main unit. 2N Helios IP Base
®
PoE Power Supply
2N Helios IP Base
®
is compatible with the PoE 802.3af (Class 0–12,95 W) technology
and can be fed directly from the LAN via the compatible network elements. If your
LAN does not support this technology, insert a PoE injector, Part No. 91378100,
between and the nearest network element. This power supply 2N Helios IP Base
®
provides with 12 W for feeding of the main unit. 2N Helios IP Base
®