iRTU & iGW: General Characteristics

Con­trol archi­tec­ture based on iRTU & iGW units com­plies with the basis of scal­a­bil­ity and mod­u­lar­ity

Product highlights

  • Smart and mod­u­lar remote tele­con­trol units suit­able for Sub­sta­tion Automa­tion and Tele­con­trol of MV grids.
  • High scal­a­bil­ity and opti­mal adap­ta­tion to any par­tic­u­lar need.
  • Avail­abil­ity of mul­ti­ple com­mu­ni­ca­tion options includ­ing embed­ded Eth­er­net switches, built-in 3G/GSM/GPRS or PSTN modems.
  • iRTU & iGW Series prod­ucts may per­form dif­fer­ent func­tions within a facil­ity based on their con­fig­u­ra­tion. They can be used as remote tele­con­trol units, sub­sta­tion gate­ways, I/O IEDs, bay con­trollers, pro­to­col con­vert­ers, etc.
  • High I/O den­sity. iRTU devices pro­vide I/O capa­bil­i­ties for direct data acqui­si­tion which can be expanded by using iRTUe devices
  • All mod­els come with a full range of pro­to­cols includ­ing IEC60870‑5–101/102/103/104, IEC61850 MMS client & server, IEC61850 GOOSE pub­lisher & sub­scriber, Mod­bus RTU/TCP, DNP3.0 (ser­ial & TCP), DLMS, IEC62056, Pro­come and Profibus DP, in order to ensure the com­mu­ni­ca­tion with new and legacy IEDs and SCADA mas­ter sta­tions.

Technical features

iRTU & iGW family: The ideal solution for Substation Automation and Telecontrol of MV Networks


A dis­trib­uted con­trol archi­tec­ture based on iRTU tele­con­trol units com­plies with the basis of scal­a­bil­ity and mod­u­lar­ity, pro­vid­ing a com­plete solu­tion open to any tech­nol­ogy and com­mu­ni­ca­tion media. iRTU Series prod­ucts may per­form dif­fer­ent func­tions within a facil­ity based on their con­fig­u­ra­tion: they are able to oper­ate as Remote Ter­mi­nal Units (RTU), as con­cen­tra­tors of data from other devices (gate­ways) or as a BCU (Bay Con­tol Unit), com­ply­ing at all times with the required power trans­mis­sion and dis­tri­b­u­tion indus­try stan­dards.

  • The basic com­mu­ni­ca­tion con­fig­u­ra­tion for iRTU & iGW units (B0 Series) is as fol­lows:
    • (4) Ser­ial ports (2.5 kVrms iso­la­tion) with TX/RX LED indi­ca­tors:
      • - (1) Full RS232/RS422/RS485 ser­ial port, soft­ware con­fig­urable
      • - (2) Basic RS232/RS422/RS485 ser­ial ports, soft­ware con­fig­urable
      • - (1) RS422/RS485 ser­ial port (EXP422 port) soft­ware con­fig­urable, for con­nec­tion to iRTUe I/O expan­sion units.
    • (1) 10/100BaseTX Eth­er­net port (RJ45 con­nec­tor)
    • (1) USB port to con­nect periph­eral devices (USB dri­ves, print­ers, etc.)
    • (1) MGMT port (MiniUSB con­nec­tor) for local main­te­nance.
    • (1) MicroSD inter­nal slot for up to 32 Gb data stor­age.
  • iRTU mod­els are equipped with  inter­nal I/O mod­ules for direct data acqui­si­tion. Basic inter­nal I/O boards options:
    • - D1: 24 dig­i­tal inputs
    • - C1: 8 dig­i­tal inputs, 4 relay out­puts, and 2 DC cur­rent ana­log inputs.
    • - Other options upon request.
  • iGW mod­els pro­vide the same com­mu­ni­ca­tion capa­bil­i­ties as the iRTU units, but with no inter­nal I/O mod­ules.
  • The above basic con­fig­u­ra­tion may be expanded by adding dif­fer­ent com­mu­ni­ca­tion options.
    • S Series: Eth­er­net (10/100BaseTX and FX100 with RSTP and ser­ial ports)
    • M0/M1 Series: built-in 3G/GSM/GPRS modem, Eth­er­net and ser­ial ports


  • Opti­mal adap­ta­tion in size, capa­bil­ity and per­for­mance to each par­tic­u­lar need.
  • High scal­a­bil­ity.
  • Rugged die-cast alu­minium.
  • High I/O den­sity. I/O capa­bil­i­ties can be expanded with iRTUe mod­ules con­nected through EXP422 port
  • Mul­ti­ple com­mu­ni­ca­tion ports options includ­ing: 3G/GSM/GPRS, Eth­er­net (10/100BaseTX and 100BaseFX), RS232, RS485 and RS422 ports
  • Wide range of pro­to­cols includ­ing:
    • IEC60870‑5–101 Master/Slave
    • IEC60870‑5–104 (ETH and ser­ial PPP) Master/Slave
    • IEC61850 MMS Client/Server
    • IEC61850 GOOSE Publisher/Subscriber
    • DNP3.0 (Ser­ial and TCP) Master/Slave
    • Mod­bus RTU/TCP/UDP Master/Slave
    • IEC60870‑5–102 Mas­ter
    • IEC60870‑5–103 Mas­ter
    • DLMS Mas­ter
    • IEC62056-21 Mas­ter
    • Profibus DP Mas­ter
    • SNMP Agent/Manager
    • Pro­come Mas­ter
  • IEC61131‑3 PLC automa­tion: logic and PLC pro­gram­ming.
  • IEC61850‑3 EMC com­pli­ant.
  • Real time clock with 1.5 ppm time drift.
  • Real time pro­cess­ing with 1 ms accu­racy.
  • Time syn­chro­niza­tion: SNTP (client and server), IEC60870‑5–101, IEC60870‑5–102, IEC60870‑5–103, IEC60870‑5–104, DNP3.0, DLMS, Profibus DP, Pro­come.
  • Cal­cu­la­tions and for­mu­las using LUA lan­guage.
  • Con­fig­u­ra­tion is quick, sim­ple, and eas­ily accom­plished using the pro­vided iConf con­fig­u­ra­tion tool.
  • Local main­te­nance (through USB port) and remote main­te­nance (Tel­net and FTP), with the high­est lev­els of secu­rity.
  • Omega DIN rail mount­ing.
  • 2.5 kVrms iso­la­tion in the power sup­ply, I/O and ser­ial ports.
  • Extended tem­per­a­ture range: ‑25ºC to +70ºC.
  • 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:
    • Built-in GPRS/3G modem: M0/M1 Series
    • Embed­ded Eth­er­net switch: S0/S3 Series
  • 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

  • iRTU units include inter­nal I/O mod­ules. Basic model (iRTU-B0D1) is equipped with D1 I/O card (24 dig­i­tal inputs mod­ule). Other options upon request.
  • I/O capa­bil­i­ties can be expanded with iRTUe expan­sion 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
  • Con­sump­tion (depends on model):
    • Less than 3W for B0 series,
    • 15W for S0 Series

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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
  • Inter­con­nec­tion between iRTU/iGW unit and iRTUe devices through 6‑wire patch cable with RJ12 con­nec­tors
  • Phys­i­cal dimen­sions: 173x137x78.4 mm
  • Weight depend­ing on model: 900 to 1200gr

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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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