Dwyer Instruments SERIES DDB, SERIES DDD Catalog Page

AIR QUALITY

Series

DDB

DDD

Non-Spring Return Direct Coupled Actuators

Low Cost, Two-Position or Modulating

DDB and DDD Series Direct Coupled Actuators are non-spring return

Damper Actuators

actuators that are perfect for positioning of dampers and valves in HVAC systems. DDB actuators are designed to accept floating control signals and come in a variety of power supplies. DDD Actuators are designed to accept 4 to 20 mA or 0 to 10 VDC modulating control signals and are 24 VAC powered. DDD units feature a 0 to 10 VDC feedback signal of damper position. Actuators produce 88 to 265 in-lb (10 to 30 Nm) of torque. Contact factory for optional internal auxiliary switches on DDB.

FEATURES

• Direct mount

• Actuator travel indicator

• Overload protection

• Manual override

• Floating control signal on DDB

• Modulating 4 to 20 mA or 0 to 10 VDC control signal on DDD

• Position feedback signal on DDD

• 60,000 cycles nominal

Model DDB51 DDB53 DDB61 DDB63 DDB71 DDB73 DDB81 DDB83 DDD53 DDD63 DDD73 DDD83

Size/ Torque

88 in-lb [10 Nm] 88 in-lb [10 Nm] 132 in-lb [15 Nm] 132 in-lb [15 Nm] 177 in-lb [20 Nm] 177 in-lb [20 Nm] 265 in-lb [30 Nm] 265 in-lb [30 Nm] 88 in-lb [10 Nm] 132 in-lb [15 Nm] 177 in-lb [20 Nm] 265 in-lb [30 Nm]

Supply Voltage

110 VAC 24 VAC 110 VAC 24 VAC 110 VAC 24 VAC 110 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC

Input

Floating Floating Floating Floating Floating Floating Floating Floating Modulating Modulating Modulating Modulating

Size

88 in-lb (10 Nm) & 132 in-lb (15 Nm) 177 in-lb (20 Nm) & 265 in-lb (30 Nm)

SPECIFICATIONS Power Requirements: DDB: 110 VAC, 24 VAC, ±10%, 50/60 Hz, single

phase. Optional 230 VAC. DDD: 24 VAC, ±10%, 50/60 Hz, single phase.

Power Consumption: DDB: 5.5 VA. DDD: 7.5 VA. Control Input: DDB: Two-position or floating. DDD: 4-20 mA or 0-10

VDC.

Overload Protection: Magnetic clutch. Angle of Rotation: 95° (mechanically adjustable). Accuracy: DDD: ±5%. Fits Shaft Diameter: 0.4˝ - 0.75˝ (10-20 mm). Position Indication: Visual indicator. Direction of Rotation: CW/CCW. Running Time: 88 in-lb: 66 sec., 132 in-lb: 90 sec., 177 in-lb: 110 sec.;

265 in-lb:143 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 (IP42). Standard Accessories: (2) imitative baffles, (2) baffle setscrews, (1)

setting bracket. Weight: DDB: 2.87 lb (1.3 kg) 88, 132 in-lb models; 3.68 lb (1.67 kg) 177, 265 in-lb models; DDD: 2.98 lb (1.35 kg) 88, 132 in-lb models; 3.79 lb (1.72 kg) 177, 265 in-lb models. Agency Approvals: CE.

4-17/64 [108.35] 4-57/64 [124.22]

6-55/64 [174.23] 7-23/32 [196.06]

2-49/64 [70.25] 2-23/32 [69.06]

1-35/64 [39.29]

1-1/32 [26.19]

1-15/64 [31.35] 1-25/64 [35.32]

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