Signify LCN7700 Users Manual

Segment Control

Unit

Product guide

LCN7700

The Segment Control Unit is central processing unit (CPU) in the cabinet system. Equipped with a powerful ARM Cortex A5 (550MHz) processor and a Linux kernel. Commonly used interfaces for Energymeter, load current and leakage measurement, relays for contactor mains switching are integrated into the Segment Control Unit for ease of wiring and compactness.

Direct communication between the optional modules takes place by means of an A-Bus interface, which is based on the industrially proven RS485 technology.

LCN7700

The Segment Control Unit serves as a WAN communications and data concentrator module. Two-way communication with the central server takes place via Ethernet, GPRS (3G/2G) or SMS. The module has the ability to automatically switch between different available communications carriers in order to provide stable and reliable communication.

Data are either delivered to the server immediately or stored locally in the built-in flash or external SD card memory of the Segment Control Unit until scheduled delivery. Software and configurations are updated remotely from the server and stored on the Segment Control Unit enabling it to autonomously execute tasks, e.g. turn the streetlight on/off or collect meter readings based on the configurations set up by the user.

Voltage values on all three phases of the main supply are monitored by the Segment Control Unit. If the module is installed together with a Battery module, the Segment Control Unit will be supplied with backup power via the A-Bus in the event of power failure. This enables the Segment Control Unit to store data and send a main power failure alarm to the central server before it shuts down safely.

For more detailed information see the specific module manuals & guides.

Applications

The Segment Control Unit is a power grid monitoring and group lighting control device.

It is designed to be installed inside an IP65 rating outdoor street cabinet. This control unit is designed as a local controller for group light controls as in road and street, expressway, premises/campus area

lighting, public parks or in tunnel lighting applications.

For remote connectivity, 2G/3G network can be used or Ethernet connectivity in case the cabinet is located indoors.

The accurate current measurement can help to detect power thefts when the current value goes beyond

a threshold limit defined. The inbuilt GPS locater helps to detect the location of the installed controller remotely to enable ease of commissioning. The DALI interface gives opportunity to control other DALI enabled devices like a group of luminaires in a high mast pole in airport or port applications with dimming capability. The wide input power supply voltage range from 120-277V makes the controller to be used in wide geographical locations. The use of an external surge protection module is highly recommended to protect the Segment Control Unit from surges.

In general, the Philips Segment Control Unit can be used for remote light management in diverse outdoor Lighting applications.

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Dimensional drawing

86 mm (3.3 in)

		58 mm
192 mm (7.5 in)		(2.2 in)

Philips quality

Lifetime: 70000 Hrs @ 10% failure rate.

2	Product Guide - LCN7700

Functional specifications

The Ethernet connection is, in addition to this,
functionally insulated with respect to the secondary		GSM/GPRS	SMA connector for external
connections. See for detailed information the			GSM antenna. GSM850,
technical specification section.			E-GSM900, GSM1800
			(DCS1800), GSM1900
Primary
			(PCS1900).
Power (L1, L2, L3,	, N)	SIM Card	Micro SIM card is inserted
			on top part of the Segment
Three mains rated phase (line) inputs: L1, L2 and L3			Control Unit.
One mains rated alarm monitor input:		Micro SD card	Micro SD card is inserted
			on top part of the Segment
One mains neutral input: N			Control Unit.
		A-Bus	1x5 internally connected
The Segment Control Unit can be mains powered by			signals that are used for
one, two, or three phases plus neutral. When powered			the A-Bus. The internal
by multiple phases, the Segment Control Unit is able			connection makes it easier
to detect phase faults on the mains power supply.			to daisy-chain to other
If a fault occurs on one or two phases, the Segment			controller modules.
Control Unit will still be powered by the remaining
phase(s). In this case, the Segment Control Unit will		RS485	Supports multiple baud
send an alarm to the central server. The alarm monitor			rates. Default value is 9600
( ) is a mains rated input (related to mains Neutral			bps.
(N)) for cabinet door monitoring.
		DALI	DALI master without DALI
Secondary
			Power Supply.
USB	2x USB 2.0 host port for	Current Sensing	Phase current sensing and
	additional devices		leakage current sensing.
Inputs		RS232 interface	For use with RS232 power
			meters, maximum data
2x Analog	Low voltage measurement		transfer rate 115.2 Kbps.
	inputs analog input 1 and
	analog input 2 (positive	GPS Antenna	Insert the antenna in the
	voltage w.r.t. GND).		antenna socket of the
			Segment Control Unit and
1x Digital	Low voltage input digital		tighten it gently with your
	input (positive voltage w.r.t.		fingers. Do not use tools.
	GND).

Ethernet	RJ-45 connector, 100/10
	Mbps, half & full duplex,
	functional insulated from
	the secondary connections.

GPRS Antenna	Insert the antenna in the
	antenna socket of the
	Segment Control Unit and
	tighten it gently with your
	fingers. Do not use tools.

Product Guide - LCN7700

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