DDC

DDC
V-21
12/11/06
10:59 AM
Page 1
Bulletin V-21
Series DDC 17, 35, 53, 70 in-lb Modulating Damper Actuator
Specifications - Installation and Operating Instructions
5-23/32
(145.26)
4-53/64
(122.63)
17/32 SQ
(13.49)
3-25/64
(86.12)
21/32
(16.67)
63/64
(25.00)
2-59/64
1-47/64 (74.22)
(44.05)
9/64
(3.57)
Series DDC Direct Coupled Actuators are non-spring return actuators that are perfect for positioning of dampers and valves in HVAC
Systems. Actuators are designed to accept 4 to 20 mA or 0 to 10 VDC
modulating control signals and are 24 VAC powered. Actuators produce 17 to 70 in-lb (2 to 8 Nm) of torque. Unit features a 0 to 100 VDC
feedback signal of damper position.
Features
• Direct mount.
• Actuator travel indicator.
• Overload protection.
• Manual override.
• Modulating 4 to 20 mA or 0 to 10 VDC control signal.
• Position feedback signal.
• 60,000 cycles nominal.
FUNCTION TESTING
Press the manual button on the back of the actuator. The gearing
inside the actuator will break away. The damper can be operated
manually while pressing the manual button. DO NOT OPERATE
WHEN POWER IS ON!
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
SPECIFICATIONS
Power Requirements: 24 VAC, ±10%, 50/60 Hz, single phase.
Power Consumption: 4 VA.
Control Input: 4-20 mA or 0-10 VDC.
Overload Protection: Magnetic clutch.
Angle of Rotation: 95° (mechanically adjustable).
Accuracy: +/- 5%.
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: 110 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).
Wiring Connection: Terminal block.
Standard Accessories: (2) imitative baffles, (2) baffle setscrews,
(1) actuator body setscrew, and (1) aluminum gasket.
Weight: 1.72 lb (0.78 kg).
Phone: 219/879-8000
Fax: 219/872-9057
www.dwyer-inst.com
e-mail: [email protected]
V-21
12/11/06
10:59 AM
Page 2
WIRING DIAGRAM
CHART 1: ACTUATOR ACTION
Set Up
• Set jumper J1 or J2 to proper selection for reverse or direct
acting. See Chart 1: Actuator Action above for more detail.
• Set jumper J3 for Voltage or Current input control signal.
• Set jumper J4 for actuator direction on loss of control signal.
• Potentiometer PT1 adjusts the stroke of the actuator.
MAINTENANCE
Upon final installation of the Series DDC Non-Spring Return Direct
Coupled Actuator, no routine maintenance is required. A periodic
check of the system calibration is recommended. The Series DDC
is not field serviceable and should be returned if repair is needed
(field repair should not be attempted and may void warranty). Be
sure to include a brief description of the problem plus any relevant
application notes. Contact customer service to receive a return
good authorization number before shipping.
Square shaft installation
Before installation, the aluminum gasket should be put into
the hole of Output Axle. Fix with square damper shaft. The
rotating angle of the actuator can be set by internal
potentiometer. The match between working range and
feedback signal is automatically done by the actuator.
a = .4” (10 mm)
or
.5” (13 mm)
©Copyright 2006 Dwyer Instruments, Inc.
Printed in U.S.A. 12/06
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
Phone: 219/879-8000
Fax: 219/872-9057
FR # R2-443451-40
www.dwyer-inst.com
e-mail: [email protected]
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