Plant-WideSupervisory Control
SCADA and HMI systems that put every process variable, alarm and trend on one screen — designed, configured and commissioned by our own engineers.
Trusted on site by
Industrial Automation
Control systems designed, built and commissioned in-house
From a single PLC retrofit to a plant-wide control system — we engineer the design, build the panels, write the code and stay on site through commissioning. On new plant, and on equipment that has been running for decades.
Platforms we work across: Siemens · Allen-Bradley · Delta · Schneider · Phoenix Contact · CG

PLC & Controllers
Programming, integration and migration across Siemens, Allen-Bradley, Delta and Schneider platforms — new logic or taking over someone else’s.
HMI & SCADA
Operator screens, alarm management, trending and shift reporting — on your chosen platform, or on SENTIENT, our own in-house SCADA and IIoT platform.
VFD & Drives
Drive selection, parameterisation and commissioning for motors, conveyors, pumps, fans and furnace auxiliaries.
Instrumentation
Temperature, pressure, flow, level, proximity, laser and radar devices — supplied, installed, wired and calibrated.
Control Panels
PMCC, VFD and automation panels manufactured, wired and routine-tested in our own works against your single-line drawings.
System Integration
PLC, drives, instrumentation, safety and IIoT tied into one system that one team can support — including legacy equipment.
End to end solution, under one roof
Drawings, panel build, code and commissioning all come from the same team — so there is no gap between who designed it, who wired it and who answers the phone when it stops. One contract, one point of responsibility.
- 01
Design & Engineering
Control philosophy, I/O schedules, single-line and panel drawings agreed before anything is cut.
- 02
Panel Manufacture
Built, wired and routine-tested in-house, so the build and the logic come from the same team.
- 03
Factory Acceptance Test
Logic proven against simulated I/O with you present, before a panel leaves the works.
- 04
Installation & Commissioning
Loop checks, live tuning and operator handover on site — our engineers, not a subcontractor.
- 05
Support & AMC
Breakdown response, spares holding and planned maintenance under contract once you are running.
Retrofit & Migration
Ageing control systems, brought forward without losing a shift
An obsolete PLC or an unsupported drive should not become an unplanned shutdown. We reverse-engineer what is on the floor, map every loop to the new architecture, and stage the changeover around your production window.
- Reverse-engineering of undocumented logic
- Loop-by-loop verification against the old system
- Changeover planned around your shutdown window
- Operators trained before the old panel goes
Industries we work in
Electrical Engineering
Substations and switchgear, from design to energisation
Design engineering, panel manufacture, erection and commissioning — carried out by our own engineers and technicians, with our own team, across every voltage level from LV to EHV.
Design engineering up to
765 kV
Grid substations delivered
132/33 kV
Substation & hydro projects
20
Air and gas insulated
AIS & GIS
Design & Drawing Engineering
Substations up to 765 kV, hydro power projects, coal washeries, material handling and process plants — layouts, schematics, calculations and protection schemes.
Panel Manufacturing
Our own panel unit builds LT switchgear, AC and DC distribution boards, control & relay panels, PLC panels, starter panels and junction boxes.
Supply, Erection & Commissioning
Supply, installation, testing and commissioning of complete electrical projects, with erection supervision where you have your own contractor.
Protection & Relay Setting
Full protection co-ordination studies, ETAP-based power system modelling and numerical relay setting — then testing and calibration on site.
Retrofitting Existing Systems
Ageing electrical systems and panels brought back into service, with modified schematics and fresh coordination rather than a like-for-like swap.
Audits & Site Testing
Energy audits, feasibility reports, soil resistivity testing and transformer oil filtration — plus supply of electrical spares.
What a design package contains
Not a single-line diagram and a bill of materials. Every drawing and calculation a contractor, an inspector and your own maintenance team will ask for.
Testing & Analysis
Diagnostics that go well past a routine check
Transformers, GIS and AIS switchgear, breakers, changeover switches and relays — routine and special testing, condition monitoring, thermography, partial discharge and power system studies, at every voltage level.
Equipment we test
Instruments we work with
Relays can be integrated into your existing SCADA, or a new one.
Substation projects
- 2×50 MVA, 132/33 kV grid substations at Chakuliya, Chandwa, Chouka and Surda — JUSNL
- 2×25 MVA, 33/6.6 kV substation, Tasra Coal Washery
- 2×6.3 MVA, 33/6.6 kV substations — MCL Ananta and BCCL Bhojudih
- 33 kV line-in-line-out substation — NEA, Nepal
Hydro power projects
- 2×1700 kW at Taksang Chu and 2×1500 kW at Shayro, Arunachal Pradesh
- 2×400 kW Bogdang, 2×250 kW Turtuk and 2×225 kW Chamsen, Ladakh
- 2×775 kW Upper Gaddi Gad and 2×750 kW Lower Selang, Nepal
- 500 kW Amethi, Bihar and 2×500 kW Mabung, Arunachal Pradesh
Where we work
SENTIENT — our IIoT platform
One platform, from a single gateway to a plant-wide cluster
SENTIENT is our own industrial IoT and SCADA platform — device management, dashboards, alarms and a rule engine, with the local process control, PLC connectivity, reporting and recipe handling that plant work actually needs.

Built for plants, not for pilots
Most IoT platforms stop at charting telemetry. SENTIENT covers what a plant still needs once the dashboards look good.
Local SCADA, not just dashboards
Full process visualisation and operator control running on site — so the plant keeps running when the link to the cloud does not.
PLC communication that covers real plant
Talks to the controllers already on your floor, across the protocols industrial equipment actually speaks — not just MQTT and HTTP.
Reporting built for a shift log
Shift, batch and production reports generated straight from the historian, in the format your team already files.
Recipe management
Product recipes held centrally and pushed to the line, with version history and a record of the parameters each batch actually ran.
AI analytics as a first-class feature
Analytics is part of the platform rather than a bolt-on — anomaly detection and prediction against your own historian data.
A Rust core that scales both ways
The same platform runs on a low-power edge gateway or scales out to a high-availability cluster. One codebase, no separate edge product.
Written in Rust
Small enough for a gateway, built to cluster
The backend is a Rust application, so it runs in a fraction of the memory a JVM platform needs. That is what lets the same build sit on a low-power box beside the panel and also scale out across a cluster — no separate cut-down edge edition, no second system to learn.
Gateway on the wall
Low-power hardware next to the panel, holding its own data and screens when the network drops.
One server on-premise
A plant-wide historian and SCADA on your own hardware, inside your own network.
High-availability cluster
Multiple sites into one system, cloud or on-premise, with redundancy where downtime costs real money.
Every deployment includes
CNC & Special Purpose Machines
The iron is fine. It is the controls that aged
A mechanically sound machine does not need replacing because its control is obsolete. We fit a new controller, drives, motors and operator panel to the machine you already own — and build special purpose machines from scratch where nothing off the shelf fits.

What we replace
- CNC controller
- Servo drives and motors
- Encoders and position feedback
- Spindle drive (VFD)
- Operator panel and HMI
- Electrical panel and wiring loom
- Limit switches and machine I/O
What stays exactly as it is
- Bed, column and castings
- Spindle and bearings
- Ball screws and guideways
- Tool changer and turret
- Hydraulics and coolant system
- The machine’s original geometry
Spares that no longer exist
When a control is obsolete, one failed board can idle the machine for weeks. A current platform means parts are on a shelf, not on a forum.
Accuracy you already paid for
Castings, ball screws and guideways have decades of life left. Scrapping a mechanically sound machine throws away the part that took years to settle.
A control your programmers can use
Modern programming, networking and on-screen diagnostics — so the machine joins the rest of the shop instead of sitting apart from it.
Machines we retrofit
Special Purpose Machines
When nothing off the shelf does the job
Some operations have no standard machine. We design and build one around the job — mechanics, drives, control and safety as a single package, sized to your cycle time and your floor space rather than a catalogue.
- Built around one operation and its cycle time
- Mechanical, electrical and control from one team
- PLC, HMI and safety designed in, not added after
- Documented and supported like any other machine
How a retrofit runs
A machine out of production is costing money, so the survey and the panel build happen before anything is stripped.
- 01
Survey & feasibility
Geometry, backlash, spindle and screw condition checked first — if the iron is not worth retrofitting we will say so.
- 02
Control design
Controller, drives and motors sized to the machine, with schematics and an I/O list before anything is ordered.
- 03
Panel build
The control panel is manufactured and wired in our own works, then tested before it reaches your floor.
- 04
Installation
Old controls stripped out, new gear fitted, axes aligned, tuned and backlash compensated.
- 05
Commissioning & training
Accuracy verified against test cuts, then your operators and maintenance team trained on the new control.
Projects
Hydro in Ladakh, furnaces in Bhutan, refineries in Panipat
Sites that are hard to reach and plant that cannot stop. Grid substations for state utilities, micro hydro above 3,000 metres, submerged arc furnace control, and control desks for Tata Steel’s annealing line.
20
Substation & hydro projects
50+
Projects delivered
4
Countries worked in
765 kV
Design experience up to
Design, erection, testing and commissioning of grid and plant substations.
2×50 MVA, 132/33 kV grid substation
JUSNL
Chakuliya, Jharkhand
2×50 MVA, 132/33 kV grid substation
JUSNL
Chandwa, Jharkhand
2×50 MVA, 132/33 kV grid substation
JUSNL
Chouka, Jharkhand
2×50 MVA, 132/33 kV grid substation
JUSNL
Surda, Jharkhand
2×25 MVA, 33/6.6 kV substation
Tasra Coal Washery
Jharkhand
2×6.3 MVA, 33/6.6 kV substation
BCCL
Bhojudih
2×6.3 MVA, 33/6.6 kV substation
MCL
Ananta
2×5 MVA, 33/6.6 kV substation
MCL
Sardega
33 kV line-in-line-out substation
NEA
Nepal
About Invenia Systems
The engineers who design it are the ones who commission it
Invenia Systems was founded by three engineers with fifteen years each behind them at firms like McNally Bharat, SATCON and Nextgen Automation — every one of them carrying both design-office and commissioning experience. That combination is what the company was built on.
ISO 9001:2015
Quality management systems
ISO 45001
Occupational health & safety management
Md Mozammel Hossain
15 years
Fifteen years in automation, instrumentation and IIoT. Boiler commissioning with remote data viewing, veneer and speciality paper plants, IQF vegetable processing, organic fertiliser, distillery and bottling.
- Qualification
- B.Tech, Electronics & Instrumentation — JIS College of Engineering
- Previously
- NIIFT, Bangkok · Diplomatic Sea, Singapore
Partha Pratim Kar
15 years
Fifteen years in automation products and projects — PLC, drives, SCADA and HMI, wireless systems and MCC panels. Material handling, mines, steel, barrage gate operation, solar and special purpose machines.
- Qualification
- B.Tech, Electronics & Instrumentation — JIS College of Engineering
- Previously
- McNally Bharat Engineering · Nextgen Automation
Arijit Das
15 years
Fifteen years in electrical design engineering: substations up to 765 kV, overhead transmission to 33 kV, thermal and hydro power plant EBOP, coal and material handling, and process plants. Design office and site alike.
- Qualification
- B.Tech, Electrical Engineering — Techno India
- Previously
- McNally Bharat Engineering · APE Power · SATCON
Senior consultants
Forty-five years of plant experience to call on
Two senior engineering consultants review our work and advise on the hard problems — forty-five years apiece at DCPL, WBSEB and NTPC. Experience of that depth is not something a young company can hire into a project at short notice.
Amit Kumar Das
BE Mechanical · 45 years
Ex-DCPL · Ex-WBSEB
Sougata Chakraborty
BE Electrical · 45 years
Ex-DCPL · Ex-NTPC
What we run ourselves
Design, build and commissioning are under one roof, which is why there is no gap between the drawing, the panel and the person on site.
Design office
Schematics, layouts, protection co-ordination and ETAP modelling — the drawings and calculations, not just the single line.
Panel manufacturing unit
Our own works building LT switchgear, distribution boards, control & relay panels, PLC panels and starter panels.
Site team
Erection, testing and commissioning carried out by our own engineers — including remote hydro sites in Ladakh and Arunachal.
Training & internship
We take on fresh graduates for summer and winter industrial training, so they get hands-on experience of testing, commissioning and maintenance rather than only the theory.
Where we are
53/1 Ichapur Road, Kadamtala, Howrah, West Bengal 711101, India — working across India, Nepal, Bhutan and West Africa.
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