2.3 Electric Installation

This subsection describes how to connect the 2N^® IP Audio Kit into your Local Area Network (LAN) and how to connect supply voltage and other electric interfaces.

Caution

The device must be part of the electrical system of the building.

Device and PCB Connectors

Figures below show the layout of the 2N^® IP Video Kit connectors and terminals.

PCB Connectors

568v2 PCB Connectors

Group	Terminals	Function
DC in		9–36 V / 1.5 A power input
LAN1		LAN connection with PoE function
D1		Integrated red and green LED indicators
VIDEO	+12 V, VGND, IN1, IN2	Connection of up to two analog cameras connected via composite PAL or NTSC signal
RESET		RESET multifunction button
AUDIO MODULE		Connection of an audio module with microphone, loudspeaker, buttons and LEDs
RELAY	NO, COM, NC	Programmable relay switch with an accessible N/O and N/C contact. Used for connection of non-critical devices only (lights, e.g.).
LEDs	LED1+, LED1− LED2+, LED2−	3 current outputs for connection of programmable LED indicators; two terminals per LED
KEYBOARD	COL1–4 ROW1–4	Connection of matrix keypad (4 x 4) or 16 separate buttons
OUTPUTS	OUT1+, OUT1- OUT2+, OUT2-	2 programmable active 12 V DC/ 600 mA outputs
INPUTs	IN1+, IN1− IN2+, IN2−	2 programmable galvanically isolated inputs
AUDIO	MIC+, MIC− IN+, IN− OUT+, OUT−	Microphone input, line input, line output
SPEAKER	SPK+ SPK−	Power amplifier output for loudspeaker

Connection to LAN

Connect 2N^®IP Video 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^® IP Video Kit is equipped with LAN interface (LAN1) and an integrated Ethernet switch. You can use only LAN1 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. (This applies only to HW revision 568v1).

Note

2N^®IP Video Kit does not allow you to feed another connected device via PoE. The integrated PoE function is intended for the
2N^®IP Video Kit supply only.

Caution

We recommend the use of a LAN surge protection.
We recommend the use of a shielded SSTP Ethernet cable.

Connection of External Power Supply

2N^® IP Video Kit can be supplied either from an external 9–36 V / 2 A 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, 9–36 V) dimensioned for the minimum current consumption of 1.5 A (Part No. 91341481E, e.g.) to make your device work correctly.

PoE Supply

2N^®IP Video 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, Part No. 91758100E, between your 2N^® IP Video Kit and the nearest network element. Connect your 2N^® IP Video Kit to the LAN via the LAN1 interface to supply it successfully.

Caution

In case you feed your 2N^® IP Video 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 12 W. An overload of the PoE source usually results in PoE disconnection and, subsequently,
2N^® IP Video Kit restart.
The 2N^® IP Video Kit consumption at relax (power amplifier inactive, no load switched on LED1–3 and OUT1–2 outputs) is up to 2 W.
The maximum power amplifier consumption is determined by the current loudspeaker volume level and impedance (up to 10 W for a 4 Ω 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 mentioned limit (12 W for PoE). If the PoE supply fails to provide sufficient power for the specific application, use a more powerful external source to make your device work perfectly.

Connection of LED Indicators

2N^® IP Video Kit is equipped with three independent current LED control outputs (LED1+, LED2+ and LED3± terminals). All of them are current outputs (20 mA, up to 12 V). LEDs with I_F >= 20 mA can be connected directly, in the opposite case a ballast resistor with resistance R = (12 - U_F) / I_F is necessary. Mind the polarity while connecting the LEDs to make your device work properly.

The functions of the LED1, LED2 and LED3 outputs are programmable.

Connection of Keypad/Buttons

2N^® IP Video Kit is equipped with an interface for connection of an external matrix keypad or up to 16 separate buttons; see the figure below:

The buttons are connected in a 4×4 matrix to the ROW1–4 (output) and COL1–4 (inputs) terminals. If you do not make use of all of the 16 buttons, you can leave some of the ROW and COL signals unconnected. If you need one button only, connect it to the ROW1 and COL4 terminals.

The button function is programmable. You can set the numerical keypad buttons to any matrix position (0 to 9, *, #) or configure one of the 16 buttons for dialling a telephone directory position.

Caution

Errors such as false keystroke detection may occur in installations with strong EMI. Therefore, make sure that the keypad or button cables are carried in a trunk separated from the power cables and are as short as possible (up to 1 m).

Connection of External Loudspeaker

2N^® IP Video Kit is equipped with an integrated 10 W power amplifier of class D. The amplifier output is available on the SPEAKER+ and SPEAKER− terminals.
The maximum power is achievable with a 4 Ω loudspeaker only. The higher the loudspeaker impedance, the lower the maximum power output; refer to the table below:

Loudspeaker impedance	Maximum power (at +20 dB)
4 Ω (min)	10 W
8 Ω	5 W
16 Ω	2.5 W
32 Ω	1.2 W
64 Ω	0.6 W

Caution

Never connect a loudspeaker with impedance lower than 4 Ω to avoid system damage.
Never exceed the maximum power output designated for the loudspeaker to avoid loudspeaker destruction. Choose a loudspeaker with proper impedance and maximum power values, or limit the maximum volume level in the device configuration.
Use an external power supply to maximise the power output. Make sure that the maximum Master volume value is +6 dB in the Hardware / Audio menu if you use PoE and 4Ω speaker.

Connection of External Microphone

2N^® IP Video Kit is equipped with an input for connection of an external electret microphone on the MIC+ and MIC− terminals. Shielding of the shielded cable is connected to the IN- terminal.

Caution

Undesired noise may be heard in the earphone where EMI affects the microphone signal. To avoid this, connect the microphone using a shielded cable of the minimum possible length.

Connection of External Amplifier

2N^® IP Video Kit is equipped with a line output for connection of an external power amplifier on the LINE OUT+ and LINE OUT- terminals.

Connection of External Audio Source

2N^® IP Video Kit is equipped with a line input for connection of an external audio signal source (FM tuner, MP3 player, e.g.) on the LINE IN+ and LINE IN- terminals.

Connection to Relay Output

is equipped with one galvanically isolated relay switch with N/O and N/C contacts on the NC, NO and COM terminals. The relay function is programmable.

Output wiring diagram for Relay terminals

Wiring diagram for the controlled device’s electric circuit closing

Wiring diagram for the controlled device’s electric circuit opening

Warning

Do not exceed the voltage and current limits for the load connected to the relay contacts as specified in the technical parameters of the device to avoid device damage.

Connection to Digital Outputs

2N^® IP Video Kit is equipped with two active 12 V / 600 mA outputs on the OUT1± and OUT2± terminals. The outputs are overload and short-circuit resistant.

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.

Reset Button

Located among the main unit connectors, the Reset button helps you reset the factory default values, restart the device, find the device IP address and switch the static/dynamic mode.

IP Address Finding

Follow the instructions below to identify the current IP address:

Press and hold the RESET button.
Wait until the red and green LEDs go on simultaneously on the device and the acoustic signal can be heard (approx. 15–35 s).
Release the RESET button.
The device automatically announces the current IP address.

Note

The delay after pressing RESET till the first light and sound signalling is set to 15–35 s depending on the 2N IP intercom/answering unit model used.
- 18 s is the valid value for 2N^® IP Video Kit.

Static IP Address Setting

Follow the instructions below to switch on the Static IP address mode (DHCP OFF):

Press and hold the RESET button.
Wait until the red and green LEDs go on simultaneously on the device and the acoustic signal can be heard (approx. 15–35 s).
Wait until the red LED goes off and the acoustic signal can be heard (approx. for another 3 s).
Release the RESET button.

The following network parameters will be set after restart:

IP address: 192.168.1.100
Network mask: 255.255.255.0
Default gateway: 192.168.1.1

Dynamic IP Address Setting

Follow the instructions below to switch on the Dynamic IP address mode (DCHP ON):

Press and hold the RESET button.
Wait until the red and green LEDs go on simultaneously on the device and the acoustic signal can be heard (approx. 15–35 s).
Wait until the red LED goes off and the acoustic signal can be heard (approx. for another 3 s).
Wait until the green LED goes off and the red LED goes on again and the acoustic signal can be heard (approx. for another 3 s).
Release the RESET button.

Factory Reset

Follow the instructions below to reset the factory default values:

Press and hold the RESET button.
Wait until the red and green LEDs go on simultaneously and the acoustic signal can be heard (approx. 15–35 s).
Wait until the red LED goes off and the acoustic signal can be heard (approx. for another 3 s).
Wait until the green LED goes off and the red LED goes on again and the acoustic signal can be heard (approx. for another 3 s).
Wait until the red LED goes off and the acoustic signal can be heard (approx. for another 3 s).
Release the RESET button.

Caution

In case of resetting the factory default settings on a device with a version of firmware 2.18 or higher it is necessary to reprogram the
2N^® Security Relay using the instructions from section 2.4.

Device Restart

Press the RESET button shortly (< 1 s) to restart the system without changing configuration.

Note

The time interval between the short press of RESET and reconnection after restart is 22 s for 2N^® IP Video Kit.

Connection to Digital Inputs

2N^® IP Video Kit is equipped with two digital inputs on the IN1± and IN2± terminals. The digital inputs recognise the following two logic levels: log. 0 for voltage under 1.1 V a log. 1 for voltage over 3 V. Keep the voltage polarity to make the function work properly. The function is programmable for either input.

Camera connection

2N^® IP Video Kit is equipped with two video inputs for analog camera with composite PAL or NTSC signal. Output from camera connects to VIDEO VGND and VIDEO IN1/IN2 sockets. 2N^® IP Video Kit automatically detects signal format. If the attached camera has no own power supply, it can be supplied from 2N^® IP Video Kit from VIDEO +12 V and VIDEO VGND sockets.