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.
.
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 |
3 |