Belimo TF24 - rotary actuator for dampers with safety function

Belimo TF24 actuator

TF24 is a rotary actuator with a safety function, designed to control dampers in stationary heating, ventilation and air conditioning installations. According to the technical data sheet, it supports air dampers with an area of up to approx. 0.5 m². During operation, the motor moves the damper and tensions the return spring; if the power supply is interrupted, the spring energy moves it to the safety position.

Key features and technical data

• Rated voltage: AC/DC 24 V; rated voltage frequency: 50/60 Hz.
• Control: Close/Open.
• Torque of the motor and safety function: 2.5 Nm.
• Motor running time: 75 s / 90°; safety function running time: <25 s / 90°.
• Rotation angle: max. 95°; adjustment using mechanical end stops.
• Direction of motor and safety function movement selected by L/R mounting.
• Mechanical connection: universal clamp for 6...12.7 mm; mechanical position indicator.
• Power and control connection: 1 m cable, 2x 0.75 mm².
• Power consumption during operation: 2.5 W; in standby: 1.5 W; for cable sizing: 5 VA.
• Protection rating: IP42; ambient temperature: -30...50°C [-22...122°F].

The actuator is protected against overload and stops automatically when the end stop is reached. Manual operation: no.