PLC engineering
Structured PLC software for operating modes, sequences, interlocks, diagnostics and communications, built around an agreed functional design.
View serviceControl · automation · power
Controls engineering that holds together from design to site.
Thomas Brown Controls delivers PLC, SCADA, power-management, process-control and electrical-control engineering, from functional definition and design through FAT, SAT and commissioning.
Integrated control-system delivery
Interfaces defined
SCADA & HMIOperator control, alarms, trends and reporting
PLC & LogicSequences, interlocks, communications and diagnostics
Power ManagementGenerators, PV, BESS, load shedding and resilience
Field SystemsPanels, instruments, pumps, valves, drives, breakers and networks
Design → Build → Test → Commission
Defined before developedOperating philosophy, interfaces and test criteria agreed before code is written.
Designed across disciplinesPLC, switchgear, networks and third-party systems considered as one working system.
Proven before handoverTesting based on operating scenarios, failure conditions and the realities of site.
Core services
One engineering thread from operating philosophy to commissioning.
TBC connects functional design, electrical design, software and testing so responsibilities are clear and the complete system behaves as intended.
SCADA & HMI
Operator interfaces that make plant state, alarms and required actions clear, with practical trends, data capture and diagnostics.
View serviceElectrical & control design
Manufacture-ready schematics, panel layouts and schedules that connect the functional design, software and installed equipment.
View servicePower-management systems
Control and coordination of mains supplies, generators, ATS, PV, BESS and switchgear, including load shedding and restoration.
View serviceFunctional design
Control philosophies, FDS documents, cause-and-effect and interface schedules written so they can be reviewed, approved and tested.
View serviceFAT, SAT & commissioning
Testing and commissioning built around traceable requirements, realistic failure modes and clear records.
View serviceProject lifecycle
A controlled route from requirement to working system.
TBC can lead a defined controls package or work alongside your existing design, manufacturing and site teams.
Define
Agree the operating philosophy, interfaces, responsibilities and test criteria.
Design
Produce functional, electrical and network information that can be reviewed and built.
Develop
Create PLC, HMI and SCADA applications under clear version control.
Test
Prove I/O, sequences, alarms, communications and failure responses before site.
Commission
Integrate the system, close out changes and leave a controlled handover.
Where projects go wrong
The interfaces are where control projects succeed or fail.
A PLC can work in isolation and the project can still fail. TBC looks across the software, switchgear, electrical design, networks and third-party equipment so the complete system behaves as intended.
- Client, contractor and vendor responsibilities defined early
- Drawings and functional documents aligned before software starts
- Software structured for testing, diagnosis and future changes
- Panel, network and site constraints designed in, not discovered late
- FAT and commissioning based on operating and failure scenarios
ControlsPLC modes, sequences, interlocks, permissives, alarms and diagnostics.
VisualisationHMI and SCADA navigation, alarms, trends, data and operator workflows.
ElectricalControl schematics, layouts, I/O, terminals, power supplies and interfaces.
Power systemsGenerator control, ATS, synchronising, load shedding, PV and BESS coordination.
CommunicationsIndustrial Ethernet, Modbus, BACnet and third-party data interfaces.
DeliveryFAT, SAT, commissioning, fault finding, modifications and controlled handover.
Industries
Specialist support shaped around how your project is being delivered.
TBC works directly with end users and alongside contractors, switchgear manufacturers and package suppliers where controls and electrical systems need to be coordinated.
Petrochemical & process
Controls and electrical-control support for tank storage, process plant and manufacturing, including brownfield modifications on COMAH-regulated and hazardous-area sites.
Energy, buildings & infrastructure
Generator, ATS, power-management and distribution controls where continuity, sequencing and vendor coordination matter.
Switchgear & panel manufacturers
A controls resource that fits the manufacturing programme: schematics, PLC/HMI, FAT support and site commissioning.
Electrical & M&E contractors
A defined controls package or targeted engineering input to close scope, interface or commissioning risks.
Need a controls package defined, delivered or recovered?
Send over the available drawings, specification or current issue and TBC can set out the practical next steps.