Overview
SmartDCU 910RA is a 19” rack mountable Data Concentrator Unit to be deployed as a part of the sub-station data acquisition system. The unit is specially engineered for the R-APDRP requirements by Government of India. The DCU collects data from feeder meters using MODBUS or IEC-62056 (DLMS) or a custom protocol over RS232/RS485/Zigbee. Analog data such as transformer oil temperature, winding temperature are acquired either in voltage or 4-20mA form by the analog data module. The Optically Isolated Potential free contacts of the Digital Inputs(DI)acquire the breaker ON/OFF Status. The Digital Outputs(DO) control the breakers and the required current is provided by the current drivers. Configuration such as changing meter type, configuring the same and setting the MODBUS slave addresses apart from other tasks is done over Ethernet via browser interface. The acquired data is stored in a common format and is sent to the remote monitoring station using GSM/GPRS/CDMA networks via appropriate Modem. The entire HMI and the MODBUS, DLMS(Optional) Software stack is built on Linux Operating system executing on the DCU..
Components
SmartDCU 910RA consists of eight slots housing the following cards:• CPU Card: This card hosts 64 MB RAM, 2 GB Non-volatile flash, Ethernet and a 400 MHz Processor.
• Digital Output (DO) Card: Consists of 16 MOSFET switch based outputs. The total number of outputs available can be doubled by an add-on DO card.
• Digital Input(DI) Card: Consists of 16 Optically Isolated, Potential Free Contacts for digital inputs. The total number of inputs available can be doubled by an add-on DI card.
• Analog Channel Card: Consists of 8 analog channels that can take 4-20 mA inputs, the number of analog channels is doubled by adding an add-on Analog Channel card.
Add-on cards: The remaining three slots can be populated by 1x DI Add-on card, 1x DO Add-on card, 1x Analog Channel Add-on card respectively.
