Belimo NVK24A-SR-TPC - linear actuator for globe valves

Belimo NVK24A-SR-TPC actuator

Modulating actuator for 2- and 3-way globe valves. Controlled by an analogue Y signal, it moves the stem to the specified position. If the power supply fails, energy stored in capacitors moves the valve to the selected safety position.

Key features and specifications

• Thrust: 1000 N; stroke: 20 mm.
• Rated voltage: AC/DC 24 V; frequency: 50/60 Hz.
• Y operating range: 2...10 V; U feedback signal: 2...10 V.
• Motor running time: 150 s / 20 mm; travel time to the safety position: 35 s / 20 mm.
• Safety position set using the POP dial in the 0...100% range, in 10% increments; factory-set PF holding time: 2 s.
• Power consumption during operation: 2.5 W; in the rest position: 1.5 W; for cable sizing: 6 VA.
• Power and control connection: terminals with 1 m cable, 4x 0.75 mm², 4 mm² terminal.
• Manual override by button; manual setting range adaptation, automatic on first power-up.
• IEC/EN protection rating: IP54; IEC/EN protection class: III, Safety Extra-Low Voltage (SELV).

The actuator is intended for stationary heating, ventilation and air conditioning installations. Ambient operating temperature: 0...50°C.