Controls & Automation
The control system runs the equipment, monitors conditions, sequences automatic functions, and raises alarms when something goes wrong. On an animal system, the alarm function is the part that matters most.
A control system in an aquatic life support system starts and sequences equipment through a PLC or dedicated controller, monitors water conditions, runs automatic functions such as backwash, and raises alarms; on an animal system the alarm strategy is the part that matters most.
What a control system does
Starts and stops pumps and sequences duty and standby. Runs filter backwash automatically. Controls ozone against the ORP setpoint. Maintains temperature. Monitors levels and protects pumps from running dry. Logs water quality. Alarms on out-of-range conditions and equipment failure, both locally and remotely.
Panels are typically PLC based with an operator interface (HMI) and are built to UL 508A. Larger facilities integrate the life support panels with a plant SCADA or building management system so that trends, alarms and setpoints are visible from one place; smaller systems run standalone with remote alarm dial-out or cloud alarming.
Where it’s used
Complex aquatic systems across animal facilities, aquaculture, water parks, and other applications where equipment sequencing, continuous monitoring, data logging, or remote alarming is required.
Why specification matters
Alarm strategy is the most important part and the least specified. What triggers an alarm, who receives it, how it escalates, and what happens if nobody responds. For a system holding animals, a failure at 2 a.m. that nobody hears is the failure mode that matters. This deserves explicit definition, not a line item.
Failure modes need defining for every controlled device. When a signal is lost or power drops, each valve, pump, and system needs a defined behavior. Fail-open and fail-closed are project decisions with consequences, and they need making deliberately.
Redundancy costs money and is sometimes essential. Automatic duty-standby changeover, redundant probes on critical parameters, and backup power for monitoring are decisions to make during design. Adding them later costs several times more.
Controls scope boundaries are a frequent source of coordination problems: who supplies the panel, wires the field devices, programs the sequence, commissions the system, and trains the operators; and where equipment-mounted controls end and the central controls scope begins. Those boundaries should be explicit in the bid documents.
Operators have to be able to use it. A system requiring specialist knowledge to operate becomes a liability. Interfaces should be usable by facility staff, and training belongs in the scope.
How SIVAT helps
We review control requirements against the equipment package, confirm that scope boundaries between mechanical, electrical, and controls are clear, and flag where alarm strategy or failure modes are undefined.
Where SIVAT supplies equipment packages, control integration is coordinated as part of the package rather than left as a field problem.
Pricing controls & automation on a project?
Send us the plans, specifications, or equipment list. An experienced aquatic equipment specialist will review the project requirements, identify the system needs, and provide clear, competitive pricing.