Dwyer | Mercoid | WE Anderson | Flotect

Dwyer Series DDA

Series DDA & DDC Non-Spring Return Direct Coupled Actuator

Dwyer Series DDA
Series DDA

Low Cost, Two-Position or Modulating

The Dwyer Series DDA and DDC Series Direct Coupled Actuators are non-spring return actuators that are perfect for positioning of dampers and valves in HVAC systems. DDA actuators are designed to accept floating control signals and come in a variety of power supplies. DDC actuators are designed to accept 4 to 20 mA or 0 to 10 VDC modulating control signals and are 24 VAC powered. DDC units feature a 0 to 10 VDC feedback signal of damper position. Actuators produce 17 to 70 in-lb (2 to 8 Nm) of torque. Contact factory for optional internal auxiliary switch on DDA.

 

Dwyer Series DDA Specifications

  • Power Requirements: DDA: 110 VAC, 24 VAC, ±10%, 50/60 Hz, single phase. Optional 230 VAC; DDC: 24 VAC, ±10%, 50/60 Hz, single phase.
  • Power Consumption:DDA: 110 VAC models: 5 VA, 230 VAC models: 5 VA, 24 VAC models: 3 VA; DDC: 4 VA.
  • Control Input:DDA: Two-position, floating; DDC: 4-20 mA or 0-10 VDC.
  • Overload Protection:Magnetic clutch.Angle of Rotation:95° (mechanically adjustable).
  • Fits Shaft Diameter:0.4″ (10 mm) or 0.5″ (13 mm).
  • Position Indication:Visual indicator.
  • Direction of Rotation:CW/CCW.Running Time:17 in-lb, 35 in-lb, 53 in-lb: 72 sec.; 70 in-lb:160 sec.
  • Electrical Connection:Terminal block, 18 AWG.
  • Manual Override:Push button.
  • Temperature Limit:-22 to 122°F (-30 to 50°C).
  • Sound:<45 dB.
  • Life Expectancy:60000 full cycles.Housing:NEMA 2 (IP40).
  • Standard Accessories:(2) imitative baffles, (2) baffle setscrews, (1) actuator body setscrew, and (1) aluminum gasket.
  • Weight:1.72 lb (0.78 kg).

Features

  • Direct mount.
  • Actuator travel indicator.
  • Overload protection.
  • Manual override.
  • Floating control signal on DDA.
  • Modulating 4 to 20 mA or 0 to 10 VDC control signal on DDC.
  • Position feedback signal on DDC.
  • 60,000 cycles nominal.

 

Available Downloads

Download