+34 93 502 79 84 [email protected]

iGW: The Data Concentrator

The Communications Solutions for the Energy sector

Product highlights

  • Ability to connect to multiple devices, using different protocols and communication media, and to report all their data to one or more control centers
  • Availability of a wide range of protocols including IEC60870-5-101/102/103/104, IEC61850, Modbus RTU/TCP, DNP3.0 (serial and TCP), DLMS, Procome and Profibus DP
  • Multiple communication media options, from serial ports to GPRS, or fiber optic Ethernet with SFP modules or ST/SC connectors
  • From meter data concentration to protocol conversion, iGW can act in any kind of control or automation system, specially in generation plants or high voltage substations

Technical features

iGW series products are specialized communication units for electrical facilities that allow data conversion between different protocols.

Data from multiple devices (meters, protection relays, and other IEDs) may be acquired using field protocols (IEC60870-5-101/102/103/104, IEC61850, DNP3.0, DLMS, Modbus, Procome, etc.) and can then be transferred to a Control Center using IEC60870-5-101/104, DNP3.0, and Modbus RTU/TCP protocols.

The basic configuration (iGW-B0) includes RS232/RS422/RS485 serial ports and an Ethernet 10/100BaseTX port (RJ45). It also includes an extra serial port (EXP422) for connection with iRTUe devices. These iRTUe auxiliary units can be equipped with two I/O modules (analog and digital), providing the iGW-B0 units with external data acquisition capabilites.

This basic configuration may be expanded by adding different communication options, e.g. embedded Ethernet switch (S Series) or  built-in GPRS modem (M Series).

  • Performs data conversion between different protocols
  • Ability to connect to any intelligent device (IED) via Ethernet or serial ports (RS232, RS485, RS422)
  • Protocols to Control Center:
    • IEC60870-5-101
    • IEC60870-5-104 (ETH and serial PPP)
    • IEC61850
    • DNP3.0 Level 4 (Serial and TCP)
    • Modbus RTU/TCP
  • Protocols to IEDs:
    • IEC60870-5-101
    • IEC60870-5-102
    • IEC60870-5-103
    • IEC60870-5-104
    • IEC61850
    • DNP3.0 Level 1 (Serial and TCP)
    • Modbus RTU/TCP
    • DLMS
    • Procome
  • Local maintenance (through USB port) and remote maintenance (Telnet and FTP), with the highest levels of security
  • Omega DIN rail mounting
  • 2.5kV insulation in the power supply, I/O and serial ports
  • Extended temperature range
  • Complies with all electrical, electromagnetic compatibility and environmental standards required by the power industry
Tecnical Specifications



  • (4) 2.5 kVrms isolated serial ports with LED indication (TX, RX):
    • (1) RS232/RS422/RS485 (COM1) serial port, software configurable
    • (2) RS422/RS485 (COM2 & COM3) serial ports, software configurable
    • (1) EXP422 port (RS422/485 software configurable), for connection to iRTUe devices, or to other devices.
  • (1) Ethernet 10/100BaseTX port (RJ45)
  • Others:
    • (1) USB port to connect peripheral devices (USB drives, printers, etc.)
    • (1) Management (MGMT) port (MiniUSB connector) for PC connection (local maintenance)
    • (1) MicroSD internal slot for up to 32Gb data storage
  • Communication options:
  • Protocols to Control Center:
    • IEC60870-5-101
    • IEC60870-5-104 (ETH and serial PPP)
    • IEC61850
    • DNP3.0 Level 4 (serial, UDP, TCP and TCP Dual)
    • Modbus RTU/TCP
  • Protocols to IEDs (meters, protection relays, etc.):
    • IEC60870-5-101
    • IEC60870-5-102
    • IEC60870-5-103
    • IEC60870-5-104
    • IEC61850
    • DNP3.0 Level 1 (serial and TCP)
    • Modbus RTU/TCP
    • DLMS
    • Procome

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I/O Configuration


  • iGW can be equipped with external capabilities by using iRTUe devices. Options:
    • iRTUe-D1D1: 48 DI (Digital Inputs)
    • iRTUe-D1R1: 24 DI (Digital Inputs) + 8 output relays
    • iRTUe-D1A1: 24 DI (Digital Inputs) + 8 AI (Analog Inputs, 20 mA)
    • Other configurations upon request

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Power Supply


  • Power supply options: 24Vdc, 48Vdc or 125 Vdc (-20%, + 15%). Contact iGrid T&D for other power supply options.
  • 2.5kV dielectric insulation
  • Reversible polarity

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Applications and Maintenance


iRTU & iGW units allow maintenance and configuration tasks to be performed, both locally and remotely over the IP network. Performance of maintenance tasks may be accomplished by using standard software tools, e.g.:

  • Communication trace display: Telnet manager (HyperTerminal or similar)
  • Data uploading or downloading: FTP manager (Windows File Explorer or similar)
  • iConf tool for configuration and management of iRTU/iGW units

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iRTU/iGW application


The main characteristics of the RTU application, available for iRTU and iGW units, are:

  • Use of standard protocols
  • 1 ms resolution timestamping.
  • Fast logic blocks, commonly used in electrical facilities.
  • Fully user configurable programming of logic and automatic functions by programmable state machine.
  • Remote telemaintenance (Telnet, FTP)
  • Remote configuration upload over an IP network
  • Remote firmware update over an IP network
  • XML based open configuration files that allow integrating any configuration system
  • Operating trace storage
  • SOE (Sequence of events) of 1024 points
  • Time synchronization over SNTP, IEC-60870
  • Continuous self-diagnose system and hardware watchdog
  • Real time clock (RTC): 1.5 ppm precision
  • Operating condition and communication signal indicator LEDs

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Physical Characteristics


  • DIN rail mounting
  • External dimensions: 173 x 137 x 78.4 (mm)
  • Weight (depending on model): from 900 gr to 1200 gr
  • Interconnection between iRTU/iGW unit and iRTUe devices through 6-wire patch cable with RJ12 connectors

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Environmental Conditions


  • Operating Temperature: -20º to +70ºC
  • Humidity: 93% non-condensing at 55ºC

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  • EN55022: Information technology equipment. Radio disturbance characteristics. Limits and methods of measurement
  • EN61850: Communication networks and systems in substations
  • EN60255-5: Electrical Relays. Insulation Coordination for Measuring Relays and Protection Equipment. Requirements and Tests
  • IEC6100-4 , IEC6100-6-4/5: Electromagnetic Compatibility (EMC)
  • IEC60870-2-2: Telecontrol equipment and systems. Operating conditions. Environmental conditions
  • IEC60950-1: Information technology equipment. Safety. General requirements
  • RoHS compliant

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+34 93 502 79 84

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