PLC & HMI upgrades
Obsolete PLC & HMI Upgrade on an Ozone Skid
An ozone control system upgrade: obsolete PLC and HMI hardware on an ozone skid was replaced with a supported platform while limiting downtime.
Project details are generalised to protect client confidentiality.
Challenge
The ozone skid's control hardware was no longer supported.
Spare parts for the existing PLC and HMI were unavailable.
Operators had no useful process visibility.
Engineering Approach
Ozone UV Solutions migrated control of the ozone skid to a current PLC platform with a new HMI.
The existing field instrumentation and proven process logic were retained to limit downtime.
What was changed and retained
- PLC platform — replaced with a current, supported platform
- HMI — new operator interface
- Field instrumentation — retained
- Process logic — proven logic retained
- Operator visibility — live trends and alarm history
Outcome
- The skid now runs on a supported control platform for the next decade.
- Operators have live trends and alarm history.
- The upgrade was commissioned within a planned shutdown.
Relevant Ozone UV Solutions Capabilities
- PLC & HMI Upgrades — Modern controls and clear operator screens.
- System Upgrades — Reliability upgrades that extend service life.
- Engineering Consulting — Independent review before upgrade decisions.
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