- Work Delivered by Analog Control
HVAC Controller Conversion and Utility Automation
Ageing HVAC field controllers were holding the maintenance team back — changes made on site did not show up in SCADA. We converted the controllers, moved the control logic to the new structure and commissioned it with SCADA/HMI visibility.
- HVAC
- PLC
- SCADA
- Utility
Problem
Older HVAC controllers limited visibility and made maintenance harder. Changes made in the field could not be followed from SCADA.
Work performed
We planned the controller conversion, derived the existing control logic from P&IDs and equipment lists, moved it to the new structure, connected the SCADA/HMI screens and completed testing and commissioning.
Outcome
Following field controller conversion, the HVAC automation structure was delivered with central SCADA visibility, alarm tracking and commissioning records.
Generic OT architecture reference diagram; does not contain real customer topology.
Areas of work
- HVAC controller conversion
- PLC/controller integration notes
- SCADA/HMI screen structure
- I/O, signal and control-logic derivation from P&ID and equipment lists
- Alarm, trend and status monitoring
- Commissioning and acceptance records
Scope note
Customer and site details are not shared.
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