Gateway/DCU Solutions

The GATEWAY / DCU is an intelligent device with built-in RS232, RS485 and RF modules to acquire data from clusters of energy meters or MFMs using inbuilt Modbus / DLMS Software's. It also equipped with GSM/GPRS module to transmit the data to the remote data acquisition server. DCU is based on an ARM Cortex-A5 processor having 512MB of DDR2 memory and expandable NAND Flash memory up to 2GB. Edge / Sensor data can be stored locally using the onboard SD card option. The cloud interface is LTE with 2G/3G fallback.

FEATURES

SANDS DCU for AMR-AMI solutions is an optimized concept based on different communication interfaces Like RS232, RS485, RJ45, LPRF (ZigBee), GSM/GPRS.
Simple and compact design for easy installations.
Support for DLMS and Modbus meters.
Inbuilt battery-backed RTC
Automatic over the air configuration and firmware updates (FOTA).
Standalone AMR performance & Automatic profile download at specified intervals.
Compatible with various standard existing meters directly interfaced
Real-time tampering and outage alerts/notifications to MDAS server / Mobile phones of concern in-charges In the field through SMS.
Automatic GPRS connection(no AT commands required) and watchdog for reliable Communication
Compatible with all standard 2G / 3G / 4G SIM cards
In-built power supply (single-phase/three-phase) with battery backup.
Communication to central server via GSM/GPRS and Ethernet.
Inbuilt SD card for backup data storage.

SPECIFICATIONS

Hardware & Software

Operating System: Linux v4.1
32bit ARM CORTEX A5 processor
256MB DDR2 RAM, 512 MB Flash (optional up to 512MB DDR2 RAM / 2 GB FLASH)
USB: 2.0, Other: Ethernet 10/100 Mbps, RS232
Time Synchronization - MDAS Server, GPRS network, GPS (optional), SNTP
LED Indications: Network, Power, and RF Data Communication.
Built-in Encryption for data security
Inbuilt Real Time Clock with battery backup
Connectivity: 4G fallback to 3G/2G
External SD storage up to 16GB

Communication Interface

Communication - Wireless (GPRS)
TCP/IP based communication over Ethernet
Protocol for Communication - DCU to MDAS: TCP/IP based socket communication/FTP
DCU to Meter: MODBUS/DLMS/Legacy protocols

Network Interfaces

3/1.8VSIM Interface
Internal SIM card holder
Accepts standard SIM card / Micro
TCP/IP Server, TCP/IP Client, UDP, HTTP, FTP, PPP, CURL, DHCP etc

Power Supply

100 V -270 V (AC/DC)
Over-current protection
Power reverse polarity protection

EMI/EMC specifications

Surge Immunity as per IEC 61000-4-5
Fast Transient Burst as per IEC 61000-4-4
Electrostatic Discharge as per IEC 61000-4-2

Environmental

Temperature: -10 °C to +70 °C
Operating Humidity < 95%, Non-Condensing

APPLICATIONS

Automatic Meter readings (Electricity, Gas, Water meters)
Energy Auditing
Power Distribution and automatic load control.
Home automation Tariff Switching and automatic load control
Tariff Switching and automatic load control
Industrial Automation

GATEWAY/DCU SOLUTIONS