iRTUcompact – Feeder & Renewable Plant RTU

Per­fect for Feed­er RTU (FRTU) & renew­ables appli­ca­tions, pro­vid­ing I/O and gate­way capa­bil­i­ties in a com­pact device.
  • Smart and com­pact all-in-one RTUs (remote tele­con­trol units) spe­cial­ly suit­able for renew­able plants and dis­tri­b­u­tion feed­er automation.
  • Can pro­vide all com­mu­ni­ca­tion capa­bil­i­ties required for the con­trol of Pho­to­volta­ic plants
  • Offers mul­ti­ple com­mu­ni­ca­tion options incl. embed­ded Eth­er­net switch­es, built-in 4G/3G/GPRS modems, inter­nal I/Os and mul­ti­ple ser­i­al ports to com­mu­ni­cate with any device through any pro­to­col com­mon in the industry.

The iRTU­com­pact is an all-in-one device with inte­grat­ed I/O and numer­ous com­mu­ni­ca­tion ports to col­lect data from any pro­tec­tion relay or switchgear con­troller, mak­ing it the ide­al solu­tion for MV and gen­er­a­tion appli­ca­tions, specif­i­cal­ly Feed­er RTU (FRTU) and PV projects. 

Our secure and scal­able RTUs are equipped with an advanced com­mu­ni­ca­tion core to man­age, con­vert and trans­fer mul­ti­ple pro­to­cols on ser­i­al, wire­less and Eth­er­net net­works at once. They are also capa­ble of pro­vid­ing all required net­work­ing, redun­dan­cy and time syn­choniza­tion func­tions, allow­ing to auto­mate sub­sta­tions with few­er equip­ment, in a less com­plex and more afford­able way.

The data col­lec­tion from meters, pro­tec­tion relays, and oth­er IEDs can be per­formed using any pro­to­col, inl­cud­ing IEC 60870–5, IEC 61850 (MMS/GOOSE), DNP3, DLMS, Mod­bus or Pro­come, with a microsec­ond time­stamp res­o­lu­tion via NTP or PTP. 

An archi­tec­ture based on the iRTU­com­pact is open, effi­cient and scal­able, as it allows to inte­grate com­ing gen­er­a­tions of devices (IEDs, sen­sors, routers etc.) and adapt to any kind of net­work changes, sav­ing you lots of time and mon­ey.  With its inte­grat­ed dig­i­tal and ana­log I/Os, it can autonomosly report a high num­ber of data points from sev­er­al devices to upstream mas­ters and con­trol centers.


Applications & Functions

Feeder & MV Distribution Automation

  • Field/ Pole-mount RTU
  • Feed­er Remote Ter­mi­nal Unit (FRTU/ FDCU)
  • Sub­sta­tion Gateway
  • Events Log­ger

Full real-time sub­sta­tion equip­ment monitoring


Alarms & events generation


Record all para­me­ters of all incom­ing and out­go­ing feeders


Live remote and web based con­fig­u­ra­tion & data access

PV Plant Controller

  • PV Plant Gateway
  • Smart Meter Gateway
  • Sub­sta­tion Gateway
  • Pro­to­col Converter
  • Load Curve Collector

Full plant & sub­sta­tion equip­ment monitoring


Col­lec­tion of all kinds of elec­tri­cal data


Live remote and web based unit access


Alarms & events generation

IRTUcompact as Meter or Protection Master Device

Exam­ple schema

Technical Features

Communication Capabilities

Despite its small size, the iRTU­com­pact B mod­el comes with 2 inde­pen­dent 10/100 BaseTX Eth­er­net ports (two dif­fer­ent MAC address­es, RJ45 con­nec­tor) and 3 Ser­i­al ports, one selec­table by soft­ware between RS422/RS485/RS232 and two between RS422/RS485 while the S mod­el pro­vides three addi­tion­al Eth­er­net ports by replac­ing one of the con­ven­tion­al inter­faces with a switch.

The devices also car­ry 2 USB ports for con­fig­u­ra­tions and oth­er pur­pos­es. Option­al­ly, one of the ser­i­al ports can be replaced with an inter­nal 4G(LTE), 3G and GPRS modem.

IEC 61850 MMS

The iRTU­com­pact can be used as a sim­ple link between seri­al­ly con­nect­ed phys­i­cal devices and log­i­cal IEC 61850 devices, as it can map any sig­nal from many kinds of data mod­els and struc­tures onto IEC 61850 log­i­cal nodes, whilst also pro­vid­ing IEEE1588 / PTP time synchronization.

Thanks to its full iGrid pro­to­col stack, it can con­vert any stan­dard or lega­cy pro­to­col such as IEC 60870–5‑103, SPAbus, Mod­bus, DLMS to IEC61850, allow­ing it to com­mu­ni­cate with hun­dreds of vendors.

IEC61131‑3 PLC Automation

Thanks to its inter­nal PLC based on IEC 61131–3, the iRTU­com­pact can pro­vide pow­er­ful automa­tion and con­trol func­tion­al­i­ties. For exam­ple, you can eas­i­ly reuse pro­grams on dif­fer­ent projects, run mul­ti­ple PLC instances simul­ta­ne­ous­ly or use trig­gered vari­ables for con­trol com­mands and set points. It also allows to run hot pro­gram updates, stop PLC exe­cu­tions depend­ing on the qual­i­ty of select­ed PLC inputs and debug PLCs online, either cycle-by-cycle or step-by-step.

The iRTU­com­pact has a high exe­cu­tion speed – a 2000 ST line pro­gram takes less than 3ms.

Communication Protocols

The iRTU­com­pact was designed to use a high num­ber of pro­to­cols and com­mu­ni­cate with sev­er­al con­trol cen­ters at once.

The stack includes new­er pro­to­cols such as IEC 61850 MMS or GOOSE (A lev­el cer­ti­fied by DNV-KEMA), but also old­er stan­dard and pro­pri­etary pro­to­cols such as ModbusRTU/TCP, SpaBus or Pro­come. Oth­er sup­port­ed down­stream pro­to­cols for meters and pro­tec­tion relays are IEC 60870–5‑102/-103, IEC 62056–21 and DLMS, where­as upstream pro­to­cols for con­trol cen­ters also include IEC 60870–5‑101/-104 or DNP3.0 serial/TCP.

Digital & Analog In-/Outputs

The iRTU­com­pact pro­vides 24 dig­i­tal inputs (avail­able in 4 volt­age lev­els) with 2.5kVrms iso­la­tion and a 1 ms time­stamp accu­ra­cy as well as 4  high accu­ra­cy (0.15%) ana­log inputs (+/-20mA), two of which can be replaced with 2 PT100 tem­per­a­ture sen­sors. Each input can be defined as input or counter and pro­vide a con­fig­urable debounce filter.

On the out­put side, it pro­vides 8 dry con­tact elec­tro-mechan­i­cal relay out­puts with an iso­la­tion of 6kV.

Cyber Security

iGrid enforces sev­er­al lay­ers of secu­ri­ty mea­sures guid­ed by the propo­si­tions of the IEC 62351 stan­dard to pro­tect its devices from all kinds of threats.

The iRTU­com­pact is a hard­ened device fea­tur­ing Role Based Access Con­trol (RBAC) to avoid intrin­sic risks such as secu­ri­ty holes and unau­tho­rized actions by authen­ti­cat­ed users.

In addi­tion to encryp­tions via TSL/SSL, HTTPS, SSH and VPN sup­port (i.e. Open­VPN), its com­mu­ni­ca­tion can also be secured with net­work con­trol meth­ods such as fire­walls, IP fil­ters, ACL or TCP port blocks.

Models Overview

Two Eth­er­net 10/100BaseTX inter­faces with RJ45 con­nec­tor and inde­pen­dent MAC address
• Three ser­i­al ports, selec­table by soft­ware between RS422/RS485/RS232.

• Two dif­fer­ent Eth­er­net inter­faces with inde­pen­dent MAC address
• ETH1 : 10/100BaseTX with RJ45
• ETH0 : with (2) 10/100BaseTX with RJ45 and (2) FX100 with RSTP redun­dan­cy
• Three ser­i­al ports, selec­table by soft­ware between RS422/RS485/RS232.

I/O Con­fig­u­ra­tion
K1 : 24 Dig­i­tal Inputs, 8 relays and 4 DC ana­log inputs (+/-20mA and +-/10Vdc)
K2 : 24 Dig­i­tal Inputs and 8 relays
K3 : 24 Dig­i­tal Inputs, 8 relays, 2 DC ana­log inputs (+/-20mA and +-/10Vdc) and 2 PT100 tem­per­a­ture sensors


General Characteristics

Pow­er sup­ply  W : wide range, 32 — 250Vdc / 80 — 250Vac (2.5kVrms iso­la­tion)  24 : 19.5–60Vdc (2.5kVrms isolation)
MTBF 177,000h (one hun­dred sev­en­ty sev­en thou­sand hours)
Envi­ron­men­tal Oper­at­ing tem­per­a­ture: ‑25ºC to +70ºC — IEC 60068–2‑1, IEC 60068–2‑2, IEC 60068–2‑3, IEC 60068–2‑14, IEC 60068–2‑30, IEC 60068–2‑38
Vibra­tion & shock test IEC 60068–2‑6, IEC 60068–2‑7
Phys­i­cal Exter­nal dimen­sions: 120 x 240 x 50 mm (HxWxD)
IP30 enclo­sure with DIN Rail mounting

iGComms Software

Redun­dan­cy deploy­able on a hot-stand­by con­fig­u­ra­tion, option­al redun­dant pow­er supply
Secu­ri­ty IEC 62351–3 and IEC 62351–5 sup­port, includ­ing TLS/SSL, SSH and VPN connections
IEC61131‑3 automa­tion log­ic and PLC pro­gram­ming, with LD, FBD, ST and SFC editor
LUA lan­guage can be used to cre­ate sim­ple and com­plex log­ic and math­e­mat­i­cal expressions

EMC Standards

IEC 60950–1, IEC 60255–5:2000, IEC 60255–22:2000, EN 55022, IEC 61000–6‑4, IEC 61000–6‑5, IEC 61000–4‑2, IEC 61000–4‑3, IEC 61000–4‑4, IEC 61000–4‑5, IEC 61000–4‑6, IEC 61000–4‑8, IEC 61000–4‑9, IEC 61000–4‑10, IEC 61000–4‑12, IEC 61000–4‑16, IEC 61000–4‑17, IEC 61000–4‑18, IEC 61000–4‑29

Protocol Stack

Master/Slave IEC 60870–5‑101

Mas­ter IEC 60870–5‑102

Mas­ter IEC 60870–5‑103

Master/Slave IEC 60870–5‑104

Master/Slave DNP3.0 (ser­i­al, UDP, TCP)

Master/Slave Mod­bus­R­TU

Mas­ter Profibus DP Master/Slave

Mod­bus TCP/UDP and JBUS (mas­ter) 

Mas­ter IEC 62056–21

Mas­ter DLMS

Mas­ter Spabus, Mlink, Procome

SNMP Agent/Manager

IEC 61850 MMS Client/Server

IEC 61850 GOOSE Publisher/Subscriber

Communication Ports & CPU

Ser­i­al 3 soft­ware con­fig­urable ports with RS232/RS485/RS422
Eth­er­net (2) 10/100BaseTX ports with inde­pen­dent MAC addresses
Wire­less full inter­nal 4G(LTE), 3G and GPRS modem (option­al)
Eth­er­net switch (S series) up to (4) 10/100BaseTX ports with RJ45 con­nec­tion and (2) FX100 with ST, SC con­nec­tors or SFP inter­face, and sup­port­ing RSTP, HSR and PRP configurations
CPU ARM Cor­tex-A7 @ 528MHz, with 128 MB Flash and 256MBytes RAM.

Configuration with iConf

iConf has been specif­i­cal­ly devel­oped for elec­tri­cal appli­ca­tions, sav­ing you lots of time and mon­ey through­out the con­trol sys­tem set-up and main­te­nance tasks, whilst also min­i­miz­ing your project risks. Upload and down­load your con­fig­u­ra­tions, import or scan SCL files (61850) and cre­ate your own tem­plates.

Configuration & Maintenance

Easy con­fig­u­ra­tion with iConf tool
Inter­nal web serv­er, allow­ing real time mon­i­tor­ing of the sys­tem and all its inter­nal parameters
Com­mand con­sole with full infor­ma­tion on pack­et exchanges, with all avail­able protocols
Local or remote main­te­nance via USB or Eth­er­net port



RTC & Time Synchronization

Real-time Clock (RTC) with 1.5 ppm drift and microsec­ond res­o­lu­tion timestamp

Serv­er NTP, IEC 60870–5‑101, IEC 60870–5‑104, DNP3.0, PTP

Client IEEE1588(PTP), SNTP, IEC 60870–5‑101, IEC 60870–5‑102, IEC 60870–5‑103, IEC 60870–5‑104 DNP3.0, DLMS, Spabus, Mlink, Pro­come and Profibus DP

Meet the Family

iGW – For More Complex Projects

The iGW is a pow­er­ful and reli­able sub­sta­tion gate­way, able to run either in stand­alone or redun­dant modes, car­ry­ing 4 ser­i­al ports and an (option­al) embed­ded Eth­er­net switch for 2 addi­tion­al Eth­er­net ports (total of 4).

iRTU – The Gateway with Integrated I/Os

The iRTU is an intel­li­gent and scal­able bay con­troller with inter­nal and con­fig­urable I/O capa­bil­i­ties for direct data acqui­si­tion, pow­er­ful pro­to­col con­ver­sion (incl. IEC 61850), high-pre­ci­sion time­stamp­ing and an option­al embed­ded Eth­er­net switch.

iGWlite – The “Lite” Gateway

The iGWlite comes with 1 Eth­er­net, 1 RS485/RS422 and an option­al RS-232 port (cop­per or fiber) or a 2G/3G/4G modem tak­ing lit­tle space on a DIN-Rail, but still employ­ing the full iGrid pro­to­col suite.


Any questions?

    I have read and accept the Pri­va­cy Pol­i­cy*

    All per­son­al data that you sub­mit us via this form will be processed by Data Con­troller IGRID, S.L. and saved into CONTACTS pro­cess­ing activ­i­tie, with the pur­pose of answer­ing your inquiry, via email or phone, and for a lat­er fol­low up. Pro­cess­ing shall be law­ful because you give us your con­sent for these spe­cif­ic pur­pos­es. Your per­son­al data will not be dis­closed to third par­ties unless forced by law. You have right to access to, rec­ti­fy, or delete your per­son­al data, and oth­er rights as explained in our Pri­va­cy Policy

    iRTUe – Remote I/O Extensions 

    iGWs, iRTUs and third par­ty mas­ter units can be freely extend­ed by con­nect­ing one or sev­er­al iRTUe.

    They are IEC 61850 (GOOSE) com­pli­ant and come in many con­fig­u­ra­tions such as 48 DI, 16 relays, 16 AI, 24 DI + 8 relays, 24 DI + 8 AI or 8 relays + 8 AI.

    iGW-VM – unlimited control

    The freely scal­able iGW-VM sup­ports all archi­tec­tures using Win­dows or Lin­ux, act­ing as a sub­sta­tion gate­way, bay con­troller, RTU or com­mu­ni­ca­tion front-end for SCADA sys­tems. The iGW-VM is thus the per­fect soft­ware choice for projects with a predetermined/preferred hard­ware or a large grid to cov­er (high num­ber of datapoints).

    iControl SCADA

    High-per­for­mance SCADA for the visu­al­iza­tion and con­trol of sub­sta­tion data. It is able to run either in client/server or stand­alone modes, pro­vid­ing advanced func­tion­al­i­ties such as hot-stand­by redun­dan­cy, auto­mat­ic line col­or­ing, events noti­fi­ca­tion (via e‑mail and sms), SQL log­ging, and reports generation.

    Do you need more information?

    We are hap­py to assist you!


    +34 93 502 79 84

    Mon­day to Friday

    08:00h to 17:00h

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      I have read and accept the Pri­va­cy Pol­i­cy*

      All per­son­al data that you sub­mit us via this form will be processed by Data Con­troller IGRID, S.L. and saved into CONTACTS pro­cess­ing activ­i­tie, with the pur­pose of answer­ing your inquiry, via email or phone, and for a lat­er fol­low up. Pro­cess­ing shall be law­ful because you give us your con­sent for these spe­cif­ic pur­pos­es. Your per­son­al data will not be dis­closed to third par­ties unless forced by law. You have right to access to, rec­ti­fy, or delete your per­son­al data, and oth­er rights as explained in our Pri­va­cy Policy