Damper Actuator 24V, Spring Return

APPLICATIONS

For fail-safe, modulating control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. The actuator is mounted directly to a damper shaft from 3/8” up to 1/2” in diameter by means of its universal clamp, 1/2” shaft centered at delivery. For shafts up to 3/4” use K6-1 accessory. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft. The actuator operates in response to a 2 to 10 VDC, or with the addition of a 500Ω resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for position indication.

FEATURES & BENEFITS

• Power Supply: 24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10%
• Power Consumption Running: 2.5 W
• Power Consumption Holding: 1 W
• Transformer Sizing: 5 VA (class 2 power source)
• Shaft Diameter: 3/8” to 1/2” round, centers on 1/2”
• Electrical Connection: (2) 3ft [1m], 18 GA appliance cables with 1/2” conduit connectors
• Overload Protection: electronic throughout 0° to 95° rotation
• Electrical Protection: actuators are double insulated
• Operating Range Y: 2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500 Ω, 1/4 W resistor)
• Input Impedance: 100 k Ω for 2 to 10 VDC (0.1 mA), 500 Ω for 4 to 20 mA
• Feedback Output: U 2 to 10 VDC (max 0.7 mA) for 95°
• Angle of Rotation: Max. 95°,
• Torque motor: Min. 35 in-lbs [4 Nm]
• Direction of Rotation (Motor): reversible with built-in switch
• Direction of Rotation (Fail-Safe): reversible with CW/CCW mounting
• Position Indication: visual indicator, 0° to 95° (0° is full spring return position)
• Running Time (Motor): 150 sec
• Running Time (Fail-Safe): <25 sec @ -4°F to 122°F [-20°C to 50°C], <60 sec @ -22°F [-30°C]
• Ambient Humidity: max. 95% RH non-condensing
• Ambient Temperature Range: -22°F to 122°F [-30°C to 50°C]
• Storage Temperature Range: -40°F to 176°F [-40°C to 80°C]
• Housing: NEMA 2, IP54
• Housing Material: zinc coated steel
• Agency Listings†: cULus acc. To UL 873 and CAN/CSA C22.2 No. 24-93
• Noise Level (Motor): <30 dB (A)
• Noise Level (Fail-Safe): <62 dB (A)
• Servicing: maintenance free
• Quality Standard: ISO 9001
• Weight: 3.1 lb [1.4 kg]
• Auxiliary switch: 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°