SIEMENS Actuator SSD81

Core Features "SSD81" Series & Functional Design: The "SSD81" denotes Siemens’ heavy-duty electric rotary actuator series, specialized for high-torque damper control. It is a 24V AC-powered rotary actuator with a 90° rotation angle (standard for industrial dampers) and a torque rating of 15 Nm—ideal for heavy air dampers in industrial HVAC systems (e.g., large AHU dampers, power plant cooling ducts) or light industrial ventilation (e.g., factory fume extraction ducts) where high force and durability are critical. Advanced Control Modes & Precision Feedback: Equipped with professional-grade control to handle complex airflow scenarios: Modulating control (0–10V DC input): For precision airflow regulation (e.g., industrial process cooling, large-scale HVAC zoning), enabling damper adjustment with ±1.2% positioning accuracy—ensuring stable temperature or pressure control in critical environments. On/off + emergency stop control: For emergency isolation (e.g., fire events, equipment faults) or simple full-open/full-close needs, with rapid response (≤15 seconds/90°) to minimize operational risks. It includes built-in analog position feedback (0–10V DC) for real-time status monitoring, compatible with industrial DCS or large-scale BMS systems. Rugged Industrial Construction: Engineered with a reinforced cast aluminum housing (corrosion-resistant, powder-coated) and a robust design of 3.2 kg (7.05 lbs), suitable for floor, wall, or direct damper mounting in harsh environments (e.g., factory floors, industrial mechanical rooms, outdoor duct enclosures). The housing features IP54 protection (dust-tight, water-resistant), withstanding heavy industrial dust, moisture, and mild vibration—ideal for indoor and semi-outdoor industrial applications. Industrial-Grade Safety & Reliability: Built with multi-layer safeguards to ensure uptime in critical systems: Dual overtorque protection: Electronic monitoring (15 Nm max continuous torque, 20 Nm peak) and mechanical torque limiters prevent damage from jammed dampers (e.g., debris blockage, heat-induced warping), avoiding actuator or duct failure. Enhanced thermal protection: Shuts down the motor if internal temperatures exceed safe limits (even in high-ambient industrial spaces), extending component lifespan and preventing fire risks. Wide voltage tolerance: Accepts 24V AC (50/60 Hz) input with ±15% fluctuation tolerance, ensuring stability in industrial power supplies affected by heavy equipment. Seamless Industrial Integration: Designed for compatibility with Siemens industrial controllers (e.g., SIMATIC S7-1200) and third-party PLCs/DCS via standard 0–10V analog signals. It includes a universal damper shaft adapter (fits 12–20 mm diameter shafts) and heavy-duty wiring terminals (4 mm² max), reducing installation time by up to 20% vs. custom heavy-duty actuators. No specialized tools are required for setup. Typical Applications SIEMENS Actuator SSD81 is engineered for heavy-duty rotary control of large dampers—ideal for scenarios needing 15 Nm torque, high precision, and industrial durability in industrial HVAC or light industrial ventilation. Key use cases include: Industrial HVAC Large AHUs: Controlling dampers in large air handling units (AHUs) for factories, warehouses, or logistics centers. Modulating control adjusts airflow to match process cooling/heating demand, while IP54 protection withstands industrial dust—complying with EN 1886 (AHU standards for industrial use) and ASHRAE 90.1 (energy efficiency for industrial buildings). Power Plant Cooling Ducts: Regulating dampers in power plant turbine cooling ducts or boiler draft systems. High torque handles heavy, heat-resistant damper blades, and emergency stop function supports safe operation during process faults—complying with IEC 60044 (power plant instrumentation standards). Light Industrial Fume Extraction: Adjusting dampers in factory fume extraction ducts (e.g., metal processing, chemical manufacturing). Corrosion-resistant housing withstands mild industrial fumes, and overtorque protection handles debris from production—complying with ISO 12591 (industrial ventilation standards). Large Commercial/Industrial Smoke Control: Controlling dampers in smoke management systems for large commercial buildings (e.g., malls, stadiums) or industrial facilities. On/off control enables emergency smoke containment, and robust construction suits high-traffic mechanical spaces—complying with EN 12101-6 (smoke control dampers) and local fire codes.