H.E.R.P.S — Advanced Diagnostics, Performance Optimization & Future Expansion

Revision D Advanced Diagnostics & Optimization Architecture

The H.E.R.P.S Revision D R2.0 platform integrates industrial PLC control, local HMI supervision, SCADA connectivity, process instrumentation, condition monitoring, event logging, engineering validation and constrained whole-machine performance optimization into the complete Hybrid Energy Recovery Pump System.

Revision D replaces the earlier stand-alone diagnostics concept with a coordinated control and monitoring architecture distributed across the system's control, safety, validation, acceptance and maintenance volumes. Diagnostics are therefore tied directly to the actual pump, motor, hydraulic recovery system, cooling system, electrical architecture, energy storage and safety functions.

• Industrial deterministic PLC/controller architecture
• Distributed remote I/O
• Local industrial HMI
• SCADA and supervisory integration
• Real-time process instrumentation
• Alarm, trip and first-out event capture
• Historical process and energy data
• Vibration and bearing-temperature monitoring
• Hydraulic and energy-recovery performance monitoring
• Condition-based maintenance support
• Constrained whole-machine energy optimization
• Industrial network segmentation and cybersecurity
• Formal engineering validation and design-freeze control
• FAT, SAT and commissioning verification

Revision D Machine Context

PLC, Remote I/O & Control-System Architecture

The Revision D control system coordinates normal machine sequencing, permissives, operating modes, hydraulic control, cooling, energy-recovery operation and supervisory energy-system functions.

• Industrial deterministic PLC/controller
• Distributed remote I/O architecture
• Redundant 24 VDC control-power architecture
• Normal sequence and permissive management
• PID-based process control
• Pump, recovery and auxiliary coordination
• Alarm and event handling
• Operating-mode management
• Configuration-change logging
• First-out trip capture
• Engineering-unit scaling and signal-quality diagnostics

Local automatic operation remains available if the external SCADA or enterprise network becomes unavailable. Loss of external supervisory communications does not disable the local PLC, independent trips, VFD hardware protection, BMS protection or mechanical safeguards.

Industrial HMI & Real-Time Operator Diagnostics

The local HMI provides an integrated operational view of the complete HERPS package rather than a stand-alone pump display.

• Live suction and discharge conditions
• Pump and motor operating status
• Direct hydraulic path status
• Recovery turbine and PMG status
• Thermal-management system status
• DC-link operating status
• BESS supervisory data
• Supercapacitor-system status
• Operating-mode indication
• Alarm and trip annunciation
• First-out event identification
• Maintenance and instrumentation diagnostics

Real-Time Trending & Condition Monitoring

Revision D makes system diagnostics measurable through coordinated instrumentation and trend data rather than relying on unsupported calculated performance claims.

Alarm, Event & First-Out Diagnostics

Revision D incorporates timestamped alarm, event, operator-action, configuration-change and trip logging so abnormal events can be traced to their initiating condition.

• Active alarm status
• Unacknowledged alarm status
• Latched alarm and trip indication
• First-out trip identification
• Timestamped event records
• Operator acknowledgement history
• Configuration-change records
• Sensor bad-quality diagnostics
• Calibration-status indication
• Communication-state diagnostics
• Bypass and inhibit status

SCADA, Historian & Supervisory Data Integration

HERPS Revision D supports controlled supervisory integration through industrial communication interfaces while retaining independent local machine operation.

• OPC UA and/or project-approved industrial protocols
• Process-data publishing
• Alarm and event data
• Energy and recovery data
• Diagnostic information
• Historical pressure and flow records
• Historical speed and vibration records
• Historical thermal data
• Electrical and DC-system data
• BESS supervisory information
• Mode and trip history
• Energy-total records

Remote write access is disabled by default. Any remote command capability requires authenticated role-based project approval and does not form a dependency for local safe operation.

Whole-Machine Performance Optimization

Revision D upgrades HERPS from component-centric control to constrained whole-machine optimization. The objective is to operate the complete hydraulic, drive, recovery, thermal and energy system efficiently while remaining inside validated pressure, flow, cavitation, thermal, electrical and safety limits.

• Automatic flow-control operation
• Automatic pressure-control operation
• Energy-recovery operation
• Minimum-specific-energy optimization
• BESS peak-shaving support
• Ride-through support
• Thermal and auxiliary coordination
• Direct/recovery-path coordination
• Safe fallback from energy recovery
• Operating-envelope enforcement

Optimization is subordinate to process and safety constraints. The optimization layer cannot override pressure limits, required flow, cavitation limits, thermal limits, equipment limits or independent protective functions.

Hydraulic Energy-Recovery Optimization

The Revision D energy-recovery architecture uses a controlled parallel hydraulic path. Pump flow is distributed between the direct and recovery paths while maintaining the fundamental relationship:

Q_pump = Q_direct + Q_recovery

The recovery controller may capture energy only where a genuine otherwise-wasted pressure reduction exists. No control or optimization mode is permitted to deliberately increase pump head merely to create additional turbine output.

• Recovery enabled only inside the validated operating region
• Flow and available-head monitoring
• Controlled turbine admission
• PMG and active-rectifier coordination
• Direct-path fallback
• Recovery-system fault isolation
• Process duty preserved during recovery-system unavailability

Revision D Operating Modes

Condition-Based Maintenance & Performance Degradation Monitoring

Revision D uses measured operating history as the foundation for condition-based maintenance. Accepted FAT/SAT and as-left data provide reference baselines against which future machine condition can be trended.

Industrial Cybersecurity & Network Segmentation

The Revision D OT architecture is designed so that normal machine operation and independent protective functions do not depend upon enterprise or cloud connectivity.

• Industrial control network separated from enterprise networks
• Managed network segmentation
• Defined firewall conduits
• Deny-by-default unsolicited inbound traffic baseline
• Role-based authentication
• Remote write disabled by default
• Authenticated engineering access
• Unique accounts rather than retained vendor defaults
• Configuration backups and version identification
• Firmware inventory
• Alarm, trip, operator and security event logging
• Local PLC/HMI operation retained during external-network outage

Functional Safety & Independent Protective Layers

Advanced diagnostics and optimization remain separate from independent protective functions. Revision D does not rely solely on normal PLC application logic, SCADA, cloud connectivity or operator response for safety-critical protection where an independent safeguard is required.

• Independent hardwired protective actions
• Dual-channel emergency-stop architecture
• Validated run permissives
• Operating interlocks
• Mechanical pressure-relief independence
• Recovery-system safe bypass/direct-path strategy
• Electrical protection independent of supervisory optimization
• BESS protective architecture retained independently
• Controlled safety-function bypass management
• No automatic restart following designated major trips

Engineering Analysis, Validation Gates & Design Freeze

Revision D performance optimization is not declared successful from simulation targets or design intent alone. Engineering values that depend on CFD, prototype testing, rotordynamics, electrical studies, certified vendor information, functional-safety assessment or site conditions remain controlled until supporting evidence exists.

• Integrated hydraulic CFD validation
• Prototype hydraulic performance testing
• Rotordynamic and torsional validation
• Shaft and coupling fatigue verification
• Bearing-life and lubrication validation
• Pressure-boundary verification
• Water-hammer and transient analysis
• Recovery-turbine CFD and testing
• Electrical-system studies
• Thermal-system validation
• BESS certification and safety validation
• HAZOP, functional-safety and cybersecurity validation
• Final coordinated CAD and tolerance-stack verification
• Structural, lifting and foundation validation
• FAT, SAT and as-built design freeze

FAT, SAT & Performance Acceptance

Revision D uses evidence-based acceptance. A target value, calculated value, simulation result or CAD dimension is not automatically considered a successful operating result.

• Factory configuration verification
• Dimensional survey
• Hydrostatic and leak testing
• Electrical continuity and protection testing
• Control-I/O verification
• Trip and interlock simulation
• Pump hydraulic performance testing
• NPSHR testing
• Vibration and bearing-temperature acceptance
• Recovery turbine / PMG / rectifier testing
• BESS, DC/DC, supercapacitor and DC-link testing
• Thermal endurance testing
• Integrated commissioning
• Site acceptance
• Final performance and as-built records

Diagnostics, Historian & Engineering Record Data

The Revision D architecture supports long-term traceability of both operating condition and machine configuration.

• Process pressures and flows
• Pump and recovery-machine speeds
• Vibration and bearing temperatures
• Cooling-system values
• Electrical and DC-system values
• BESS supervisory values
• Recovered-energy totals
• Operating modes
• Alarms and trips
• Operator actions
• Configuration changes
• Software and firmware versions
• Calibration status
• Maintenance and replaced-component history

Future Expansion Through Controlled Interfaces

Revision D supports future development through controlled interfaces, modular supervisory integration, industrial networking and formal engineering change control rather than through undefined add-on equipment.

Future control, monitoring, analytics or optimization capabilities can be evaluated against the frozen Revision D interfaces without silently altering hydraulic duty, machine geometry, safety functions, electrical protection, validated operating envelopes or other controlled system requirements.

• Extended historian and analytics functions
• Additional approved supervisory interfaces
• Condition-monitoring enhancements
• Additional plant-level optimization interfaces
• Approved maintenance-diagnostic enhancements
• Vendor-certified hardware upgrades
• Controlled software and firmware revisions
• Future capabilities introduced through ECR/ECO change control

Revision D Engineering Status & Limitations

This page describes the public-facing Revision D R2.0 design-development architecture. It does not claim unresolved validation-controlled or site-controlled information as final.

Final PLC/HMI vendor models, final network addressing, final firewall rules, final protection settings, final trip delays, final safety-integrity classification, certified BESS configuration, final site interfaces and measured performance results remain subject to their applicable engineering, supplier, validation and acceptance processes.

Revision D does not invent performance results. Final machine performance is established through traceable engineering validation, FAT, SAT, commissioning and the approved measured as-built record.