SynC · Topic
These are the standards in the SynC Standards library that cover Controls. Each one is a complete, plain-language specification: the scope it applies to, the requirements that govern it, and a structured equipment datasheet listing the values a project has to decide — ratings, materials, setpoints, and the standards each is verified against. All of it is free to read without an account and published under CC BY-SA 4.0.
A standard usually carries several topics, so most of the entries below also appear under neighbouring subjects. The topics each one carries are listed on its own page.
Factory-fabricated air terminal units that meter primary air from a central air system into an individual thermal zone in commercial, institutional, healthcare, and industrial buildings. Covers single-duct, dual-duct, and bypass metering arrangements; variable-volume and constant-volume airflow control; pressure-independent and pressure-dependent control basis; parallel and series fan sections; hot water, steam, and electric reheat with their valves, actuators, and safety devices; casing construction and acoustic treatment; primary damper and actuator; primary airflow sensing; radiated and discharge sound; the zone controller, zone sensor, and building automation interface; factory testing; installation; and field airflow, functional, and acoustic verification.
The integration, configuration, and acceptance-testing scope performed by the control system integrator on an industrial, process, or water and wastewater treatment project, whether the plant is new, expanded, or migrated to a replacement control platform. Covers the division of responsibility between the integrator, the electrical trade, the mechanical and process trade, and the packaged-equipment vendors; the authorship and content of the control narratives; tag and point naming per ANSI/ISA-5.1; the controlled I/O list and the loop diagrams per ANSI/ISA-5.4; the software configuration management workflow from first baseline through as-built; the integration of packaged-skid controls into the plant SCADA; the integrator's secure delivery of the configured system; the integration-seam verification of safety instrumented functions; the factory acceptance test, site acceptance test, site integration test, loop checks, performance verification test, and endurance test under ANSI/ISA-62381 and ANSI/ISA-62382; the commissioning sequence; training on the narratives and the maintenance of the delivered configuration; as-built documentation; the integration warranty; and the turnover of source configuration.
The automated final control element of a process control loop — modulating (throttling) control valves and the actuators and positioners that drive them — for industrial, process, and water/wastewater (WTP/WWTP) facilities. Covers globe, segmented-ball, eccentric-plug, and butterfly valves used for modulating control; pneumatic spring-diaphragm and piston actuators and electric actuators sized for continuous modulating duty; analog, HART, and digital/fieldbus valve positioners with diagnostics; and accessories (I/P transducers, solenoid valves, limit switches, position transmitters, volume boosters). Addresses valve sizing and flow-coefficient (Cv) selection per ANSI/ISA-75.01.01 / IEC 60534-2-1, inherent flow characteristic (linear, equal-percentage, quick-open), rangeability, choked flow, cavitation and flashing with anti-cavitation trim selection, predicted noise, fail-safe action (fail-open, fail-closed, fail-last), seat leakage class per ANSI/FCI 70-2, materials and trim, and stroke/calibration. Also covers electric (motorized) actuators on isolation valves (MOVs) where the actuator is the controls interface — open/close or modulate with position feedback to SCADA — because the actuator is I&C scope even when the valve body is an isolation valve.
General-purpose, field- or factory-installed air-moving equipment serving commercial, institutional, and light-industrial HVAC systems. Covers centrifugal fans (housed and plenum/plug type), axial fans (vaneaxial, tubeaxial, and propeller), inline (cabinet and tubular) fans, utility/SWSI exhaust fans, roof- and wall-mounted power ventilators (upblast and downblast), ceiling-mounted exhaust fans, and dedicated kitchen grease-exhaust fans. Addresses aerodynamic and sound rating and certification (AMCA 210 / 300 / 211 / 311), Fan Energy Index compliance under ASHRAE 90.1 (AMCA 208), AMCA construction class and drive arrangement, direct-drive and belt-drive selection, induction and electronically commutated (EC) motors, bearings, materials and finishes, spark-resistant construction for hazardous exhaust (AMCA 99), accessories, vibration isolation, and the electrical and controls interface to variable-frequency drives and the building automation system.
Factory-fabricated industrial control panels and enclosures that house instrumentation and controls (I&C) equipment for industrial, process, and water/wastewater (WTP/WWTP) facilities. Covers UL 508A listed control panels and enclosures housing programmable logic controllers, remote I/O, control relays, power supplies, network switches, and operator interface devices, rated 1000V and below. Addresses enclosure type rating selection (UL/NEMA Type 1, 3R, 4, 4X, 12), short-circuit current rating (SCCR) determination per UL 508A Supplement SB and NEC Article 409, enclosure sizing and component layout, internal power distribution and control power transformers, power-versus-signal wiring segregation, wire and terminal-block identification, thermal management, grounding and bonding, nameplates, and arc-flash labeling.
The building lighting control system for commercial, institutional, and industrial projects — the sensors, switches, dimmers, time switches, relay and contactor panels, photosensors, and networked or luminaire-level control equipment that turn lighting on, off, and to intermediate levels in response to occupancy, daylight, schedule, and manual command. Covers the control devices, the dimming and control interface to the luminaire driver (0–10V, DALI/DALI-2, phase-cut), networked and luminaire-level control systems, the emergency lighting control interface required by UL 924, the low-voltage control wiring, the documented sequences of operation, and the commissioning and functional testing the energy code requires.
The operational technology (OT) communications network that connects programmable controllers, remote and distributed I/O, networked field instruments, and the supervisory SCADA and HMI layer in industrial, process, and water and wastewater facilities. Covers the Purdue reference model and the boundary between the OT network and the enterprise network, security zones and conduits under ISA/IEC 62443, industrial Ethernet and serial protocol selection, transmission media by segment class, managed switches and conduit enforcement devices, redundant topologies and recovery time, traffic prioritization, time synchronization, wide-area telemetry to remote sites, the device hardening, account, patch, logging, and backup baseline, and the cable, functional, and security acceptance tests that put the network into service. Applies to new networks, full replacements, and substantial expansions of an existing OT network.
Programmable logic controllers (PLCs) and programmable automation controllers (PACs) serving as the real-time logic solver for industrial, process, and water/wastewater (WTP/WWTP) control systems. Covers processor (CPU) selection and memory, the I/O subsystem (discrete and analog input/output modules and signal conditioning), remote and distributed I/O, redundancy and high-availability architectures (hot-standby CPUs, redundant power and network), IEC 61131-3 programming languages, scan-time and performance requirements, power supplies, time synchronization, environmental and hazardous-area ratings, and safety-rated controllers for safety instrumented systems where process safety applies. Applies to controllers mounted in industrial control panels and field enclosures across treatment plants, pump and lift stations, pumping and conveyance systems, and process manufacturing.
Supervisory control and data acquisition (SCADA) software and operator human-machine interface (HMI) for industrial, process, and water/wastewater (WTP/WWTP) facilities. Covers the supervisory layer that sits above the field controllers: client/server and standalone architectures, redundant (hot-standby) servers with automatic failover, the process data historian and trending, alarm management per ANSI/ISA-18.2, high-performance HMI graphics per ANSI/ISA-101.01 (situational-awareness displays, grayscale background discipline, color reserved for abnormal conditions), reporting, role-based user access and cybersecurity per ISA/IEC 62443, time synchronization, polling and communications to controllers, the software licensing model, and redundant local and remote operator workstations. Applicable to new SCADA platforms and to major migrations or expansions of an existing platform.
Interior window treatments installed for glare control, solar heat control, daylight management, privacy, and room darkening in commercial, institutional, and light-industrial buildings. Covers manual and motorized roller shades with solar screen, room-darkening, and blackout fabrics, dual-roller assemblies carrying two shades on one mounting, and draperies on track systems. Addresses fabric composition, openness factor and solar optical properties, fire performance under NFPA 701 and ASTM E84, low-emitting certification, lightfastness, fungal and antimicrobial performance, roller tube and bracket hardware, fascia and pocket concealment, hembars, manual clutch operation and the cord retention provisions of ANSI/WCMA A100.1, motorized operation and its power, listing, control, and integration, mounting condition and light gap, perimeter light-control channels, accessible operation, field testing, installation, warranty, and spare parts.