Product Guide

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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.

Segment Control

Unit

Summary of content (8 pages)

PAGE 1
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.
PAGE 2
LCN7700 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.
PAGE 3
Functional specifications The Ethernet connection is, in addition to this, functionally insulated with respect to the secondary connections. See for detailed information the technical specification section. GSM/GPRS SMA connector for external GSM antenna. GSM850, E-GSM900, GSM1800 (DCS1800), GSM1900 (PCS1900). SIM Card Micro SIM card is inserted on top part of the Segment Control Unit. Micro SD card Micro SD card is inserted on top part of the Segment Control Unit.
PAGE 4
Reliability & Maintainability Software upgrade/ installation Multi-layer system The software on the Segment Control Unit can be updated remotely from the central server. New software is transferred without interrupting the normal functionality of the Segment Control Unit. When the software has been transferred, the integrity of the software is checked and the software is installed.
PAGE 5
Technical data Environmental Storage temperature -40° C – +85° C Operating temperature -20° C – +60° C Max humidity 90% (non-condensing) Analog inputs Input range 0-10 V, 4-20 mA (0-20 mA): Impedance = 510 ohm (DC) Accuracy = ± 2% FSD at 25° C When used as digital input: Threshold of approximately 1V Absolute maximum input voltage = 12 V (A-Bus voltage can be used.). Digital input Internal 100 Kohm resistor - 1 Mohm pull-up resistor. Connect terminal to GND for a digital low.
PAGE 6
GPRS DTM (simple class A) operation. GPRS Multislot class 10 (no backoff) – Four Rx slots (maximum), two Tx slots (maximum), five active slots total. Coding schemes CS1, CS2, CS3 and CS4. GEA1, GEA2 and GEA3 ciphering. WCDMA/GERAN system selection. EDGE E2 power class for 8 PSK. DTM (simple Class A), Multislot class 12. EGPRS – Multislot class 12 (with backoff). BEP reporting. SRB loopback and test modes A and B. 8-bit and 11-bit RACH. Support PBCCH. One-phase /two-phase access procedures.
PAGE 7
WCDMA R5 HSDPA WCDMA R6 HSUPA PS data speeds up to 42 Mbps (UE category 24) on Mechanical the downlink. HS-DSCH (HS-SCCH, HSPDSCH and HS-DPCCH). Maximum of 15 HS-PDSCH channels, both QPSK and 16 QAM modulation. Support for 3GPP-defined features. Switching between HSPDSCH and DPCH channel resources, as directed by the network. STTD on both associated DPCH and HS-DSCH simultaneously. CLTD mode 1 on the DPCH when the HS-PDSCH is active.
PAGE 8
FCC Statement This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.