Technical Data 281368 Power Supply24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10% Power consumption in operation2.5 W Power consumption in rest position 0.5 W Transformer sizing5 VA (class 2 power source) Electrical Connection18 GA plenum cable, 3 ft [1 m], with 1/2” conduit connector Overload Protectionelectronic thoughout 0...90° rotation Operating Range2...10 V, 4...20 mA w/ ZG-R01 (500 Ω , 1/4 W resistor) Angle of rotation90°, adjustable with mechanical stop Position indicationpointer Running Time (Motor)75 s Running time fail-safe<60 s Bridging time2 s delay before fail-safe activates Pre-charging time5...20 s Ambient humiditymax. 95% r.H., non-condensing Ambient temperature35...104°F [1.7...40°C] Storage temperature-40...176°F [-40...80°C] Degree of ProtectionIP40, NEMA 2 Housing materialUL94-5VA Agency ListingcULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2014/30/EU and 2014/35/EU Noise level, motor35 dB(A) Noise level, fail-safe35 dB(A) Servicingmaintenance-free Quality StandardISO 9001 Weight0.55 lb [0.20 kg] Application Electronic Fail-Safe proportional ZoneTight actuator. Valve selection should be done in accordance with the flow parameters and system specifications. The actuator is mounted directly to the valve without the need for tools or additional linkage. The actuator operates in response to a 2...10 V or 4...20mA control signal. Safety Notes WARNING: This product can expose you to lead which is known to the State of California to cause cancer and reproductive harm. For more information go to www.p65warnings.ca.gov CQKB24-SR-LL Technical Data Sheet Modulating, Electronic Fail-Safe, 24 V, for DC 2...10 V or 4...20 mA Control Signal 800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEAN Date created, 05/31/2020 - Subject to change. © Belimo Aircontrols (USA), Inc.Wiring Diagrams INSTALLATION NOTES A Actuators with appliance cables are numbered. Actuators may be connected in parallel. Power consumption and input impedance must be observed. Actuators may also be powered by 24 VDC. Only connect common to negative (-) leg of control circuits. A 500 Ω resistor (ZG-R01) converts the 4 to 20 mA control signal to 2 to 10 VDC. Actuators with plenum cable do not have numbers; use color codes instead. Meets cULus requirements without the need of an electrical ground connection. ! WARNING! LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury. (–) (+) Line Volts 500 1/4 watt Control Signal VDC / mA 7 Blk (1) Red (2) Wht (3) Org (5) Common + Hot Y Input U Output Feedback Signal (+) 100%Fail Position 2 VDCOpen 10 VDCClose Open 23185 24 VAC Transformer CQKB24-SR-LL Technical Data Sheet Modulating, Electronic Fail-Safe, 24 V, for DC 2...10 V or 4...20 mA Control Signal 800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA / CARIBBEAN Date created, 05/31/2020 - Subject to change. © Belimo Aircontrols (USA), Inc.Next >