Control-system architecture
System strategy, basis of design, hardware selection, standards, and modernization sequencing built around the plant—not a preferred vendor catalog.
VALD ENGINEERING / PRINCIPAL-LEVEL CONTROLS
Controls engineering for systems that cannot afford ambiguity.
VALD Engineering architects, modernizes, integrates, and commissions industrial control systems—from plant-floor logic through SCADA, historian, OT infrastructure, and the cutover that has to work the first time.
20+Years in controls
OTOffline / air-gap ready
USNationwide field delivery
LEITARI™CONTROLS / COMMISSIONING
The system is one machine.
Code, networks, servers, field wiring, HMI, historian, procedures, and people all cross the same cutover boundary.
- AS-FOUNDEvidence before assumptions
- DESIGNArchitecture before parts
- EXECUTIONAuthority before activity
- AS-LEFTDocumentation before departure
ONE CONTRADICTION / EVERY SOURCE
The drawing said eight.
The plant said sixteen.
An illustrative LEITARI™ finding, with identifiers changed. The discrepancy is not buried in a report—it becomes an owned engineering decision before design freeze.
See the evidence model ↗NODER-104 / CAB-07
CONTRADICTIONDrawing shows 8 channels. Export and cabinet evidence show 16.
EVIDENCEALD-104 · I/O census · photo set 07
DISPOSITIONVERIFY BEFORE DESIGN FREEZE
WHAT VALD DOES
Own the seams.
That is where projects fail.
Most industrial projects divide responsibility by specification section. The plant does not care. VALD works across the seams—PLC to SCADA, OT to IT, drawing to cabinet, design to field, and old system to new.
Full engineering capabilities ↗PLC, DCS & SCADA engineering
Rockwell, ABB, GE, AVEVA/Wonderware, Ignition, and mixed-vendor systems from native logic through HMI, historian, alarms, and reporting.
OT networks & infrastructure
Industrial Ethernet, segmentation, fiber, virtualization, servers, thin clients, telemetry, and resilient plant-floor communications.
Migration & cutover
Brownfield discovery, equivalency verification, FAT/SAT, controlled cutover plans, field execution, and an as-left record operations can trust.
Commissioning & field support
On-site troubleshooting across code, wiring, instrumentation, HMI, servers, and networks—with the discipline to close the root cause.
Historian & operations visibility
Asset-contextualized data, alarm and event workflows, production reporting, and operations displays that answer real plant questions.
DELIVERY DOCTRINE
From installed reality to controlled change.
Fast does not mean casual. It means removing uncertainty early enough that execution can be decisive.
Understand
Installed reality, operating constraints, source evidence, and failure modes.
Architect
A system boundary, migration path, design basis, and acceptance strategy.
Build
Controls, HMI, historian, networks, infrastructure, and engineering deliverables.
Verify
FAT, SAT, field evidence, equivalency checks, and controlled defect closure.
Cut over
A rehearsed sequence, explicit authority, rollback logic, and disciplined execution.
Leave it right
As-left configuration, drawings, knowledge, and a baseline operations can own.
INDUSTRIAL DEPTH
Built in operating plants.
Not conference rooms.
VALD brings the same systems discipline across processes with very different equipment, hazards, and operating rhythms.
01
Water & wastewater
Plant-wide SCADA, process control, pumping, treatment, water quality, networks, and brownfield modernization.
↗02Oil, gas & alternative fuels
Field controls, LNG/CNG systems, loading, storage, balance-of-plant, telemetry, and centralized operations.
↗03Mining
Crush and convey, mill control, flotation, SX, water systems, radio telemetry, fiber, and rugged field infrastructure.
↗04Manufacturing
Batch and discrete automation, food and beverage, automotive, KPI visibility, reporting, and legacy upgrades.
↗05Landfill gas
Gas-scrubbing controls, balance-of-plant, PSA/TSA, water scrubbing, facility upgrades, and long-term support.
↗SELECTED EXPERIENCE
Proof from systems that had to keep running.
Utility modernization, national remote operations, municipal brownfield migration, and plant recovery—shown at the level buyers can verify without exposing protected client data.
Statewide utility modernization across four military installations
Unified power generation and distribution, potable water, wastewater, steam, natural gas, historian, and operations visibility across geographically separated facilities.
Three competing control platforms tested before selectionRemote operations architecture for hundreds of fueling facilities
Mixed-vendor PLC connectivity, cellular and hardline telemetry, segmented customer access, centralized alarming, historian aggregation, and national operations-center visualization.
300+ CNG and 50+ LNG facilities in the operating networkLegacy DCS reconstruction for a major wastewater migration
Native ABB engineering evidence reconstructed into browsable HMI, logic, I/O, drawings, migration mappings, verification packages, and fresh-capture rebuilds.
407 legacy mimic screens reconstructed
LEITARI™AS-FOUND / CONTRADICTION LEDGER / MIGRATION PACKAGE
MIGRATION ARTIFACTS / ENGINEER-GOVERNED
The contradiction ledger. The reconstructed as-found record. The validated migration package.
LEITARI™ reconstructs the installed system, exposes contradictions, governs the evidence, and regenerates the validated migration package until cutover. Industrial Intelligence is the system behind those artifacts.
See LEITARI™ Industrial Intelligence ↗INDUSTRIAL INTELLIGENCE / FIELD INSTRUMENT
HUGINNTMThe verified plant record, carried into the field.
HUGINNTM is the Industrial Intelligence field instrument for LEITARI™—answering practical questions about tags, wiring, screens, DCUs, alarms, and control logic from an approved local project package.
See HUGINN Industrial Intelligence ↗
FIELD QUESTION
Which controller owns this point?
HUGINNDCU 9.Concise for the field. Evidence available to an authorized engineering session.FOUNDER / PRINCIPAL
Plant-floor instincts.
Systems-architect discipline.
Robert Maxfield brings more than two decades of industrial-controls experience across design, integration, commissioning, modernization, and national operations architecture—including a Forbes-published utility-modernization feature and a ThinManager customer story.
Leadership and operating doctrine ↗THE HANDOFF STANDARD
What the client owns after we leave.
No black box and no dependency on a presentation. The record is structured, traceable, and usable by the next engineer.
01Verified migration baseline
02Contradiction and disposition ledger
03Rebuildable engineering package
04As-left evidence operations can defend
START WITH THE SYSTEM AS IT EXISTS