Series DDA & DDC Non-Spring Return Direct Coupled Actuator
Low Cost, Two-Position or Modulating
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.
Models & Ordering
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.
Product Literature
Manuals
Catalog Pages
Drawings
Photo Downloads
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