G-30-21 AF24-SR

AF24-SRSpring Return Actuator for ModulatingDamper Actuation 15 Nm (11 ft-lbf)G-30-216 Jul 2004The AF24-SR is a 24 V AC modulating damper actuatorintended for modulating dampers that perform a safetyfunction (e.g. frost and smoke protection, hygiene, etc.),of up to approximately 3 m 2 (32 ft 2 ) cross sectional area.Either direction of rotation can be selected.Control is effected by means of an electronic controllerwith a signal of 0–10 V DC and a continuous positionfeedback of 2–10 V DC.The spring return operates as a safety function if thepower supply fails or is interrupted. The springpretensioning can be manually adjusted.The actuator incorporates an electronic positioning relay.The measuring range Y (output signal of 2–10 V DC)allows electrical indication of damper position 0–100%and also the master-slave control of additional AF24-SRactuators.The AF24-SR can be manually operated.TECHNICAL DATAPart number .................................................. 877-0000-010Power supply ............................. 24 V AC ±20%, 50–60 HzPower consumption:Opening ..................................................................... 6 WOpen ....................................................................... 2.5 WFor wire sizing ............................................................ 10 VAConnection cable ........ 1.0 m (3.3 ft), 5×0.75 mm 2 (AWG18)Control signal:X1 .................................................................... 0–10 V DCInput resistance ................. 100 kΩ (0.1 mA), 8 kΩ (50 mW)Operating range:X1 .................................................................... 2–10 V DCMeasuring voltage Y .......................................... 2–10 V DC(max. 0.5 mA) for 0–100% angle of rotationAngle of rotation ................................................... max. 95°(adjustable 26–95% with additional limit stop ZDB-AF)Torque:Actuator .............. min. 15 Nm (11 ft-lbf) (at rated voltage)Spring return ................................... min. 15 Nm (11 ft-lbf)Running time:Actuator .................................................................... 150 sSpring return ................................................. approx. 16 sDirection of rotation:Actuator ...................................... selected with switch L/RSpring ..................................... selected by L/R mountingPosition indication ............................................. mechanicalStandard conformity:EMC, emission .............................................. EN 50081-1EMC, immunity .............................................. EN 50082-1Protection class ....................... III (safety extra-low voltage)Enclosure rating ......................................................... IP 54mm (in.):28 (1.10)97.5(3.83) 57(2.24)12.5 (0.49)10 (0.39)9 (0.35)98 80(3.86) (3.15)67(2.64)50(1.97)248 (9.76)10–20 (0.39–0.79)10–16 (0.39–0.63)148.5 (5.85)6.5 (0.26)49(1.93)Ambient humidity ............................................. EN 60335-1Ambient temperature:Operation ........................ –30 to +50 °C (–22 to +122 °F)Storage .......................... –40 to +80 °C (–40 to +176 °F)Sound power level:Actuator ..................................................... max. 45 dB (A)Spring return ......................................... approx. 62 dB(A)Service life ................................. approx. 60 000 operationsMaintenance ........................................... maintenance-freeWeight ........................................................... 2.7 kg (6.0 lb.)Subject to change.1 (2) 0-003-1180-3 (EN)

WIRING DIAGRAM!Connect via safety isolatingtransformer.Measuring voltage Y for position indicationor as master-slave control signal.Parallel connection of several actuatorsis possible. Power consumption must beobserved.24 V ACG0 G1 2 3 5X1 0–10 V DCY 2–10 V DCG0GX1YAF24-SRMODE OF OPERATIONThe actuator is fitted with a universalspindle clamp for quick and easy mountingdirectly onto the damper spindle. Theactuator is also supplied with an antirotationstrap for fixing it in position. Thedirection of rotation can be selected withthe L/R switch. The direction of rotation forthe spring is selected by mounting left orright.The damper can be operated manuallyand locked in the required position.Release of the locking mechanism canbe achieved manually or automaticallyby applying the supply voltage.If manual operation is used while thepower supply is still switched on, theactuator will check itself by running first tostart position and then to the positiondictated by the control signal X.The actuator moves the damper to itsnormal working position while tensioningthe return spring at the same time.If the power supply is interrupted, theenergy stored in the spring moves thedamper back to its safe position ≤ 0°.The actuator is supplied from factory with5° of pretensioning. The pretensioningcan be unlocked manually by means of acrank or electrically by connecting thepower supply. The actuator will then bemoved back to its safe position ≤ 0°.The actuator is overload-proof and needsno limit switches. It stops automatically atthe end stops.NOTEWhen calculating the torque required tooperate dampers, it is essential to takeinto account all the data supplied by thedamper manufacturer concerning crosssectional area, design, mounting and airflow conditions.ACCESSORIESPlease refer to data sheet G-30-90 “AccessoriesDamper Actuators” (part. no. 0-003-2251).TAC AB, Jägershillgatan 18, SE-213 75 MALMÖ, SWEDEN, +46 40 38 68 50 (switchboard), tac.com0-003-1180-3 (EN) 2 (2)