N20xxA, N34xxA NON-SPRING RETURN DIRECT-COUPLED DAMPER ACTUATORS FOR FLOATING AND 2-POSITION CONTROL

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N20xxA, N34xxA

NON-SPRING RETURN DIRECT-COUPLED DAMPER ACTUATORS FOR

FLOATING AND 2-POSITION CONTROL

PRODUCT DATA

GENERAL

These direct-coupled damper actuators provide floating and 2-position control for:

 air dampers  VAV units  air handling units  ventilation flaps  louvers

FEATURES

 Self-centering shaft adapter

 Access cover to facilitate connectivity  Service/off for safe and easy servicing

 Rotation direction set using function selection switch  Declutch for manual adjustment

 Rugged mechanical end limits

 Mountable in any orientation (no IP54 if upside down)  CE-certified

SPECIFICATIONS

Supply voltage

N2024A / N3424A 24 Vac 15%, 50/60 Hz N20230A / N34230A 230 Vac 15%, 50/60 Hz

Power consumption

See Table 1 on pg. 2.

Ambient limits

Ambient operating limits -20...+60 C Ambient storage limits -40...+80 C

Relative humidity 5...95%, non-condensing

Safety

Protection standard IP54 as per EN 60529 Protection class II as per EN 60730-1

Lifetime

Full strokes 60,000

Repositions 1.5 million

Mounting

Round damper shaft 10...27 mm

Square damper shaft 10...18 mm; 45° steps

Shaft length min. 22 mm

Feedback signal

Limits 1 mA at 0...10 V

+ 1mA … -0.5mA at 2…10V

Torque rating see Table 1 on pg. 2

Runtime 95 sec (60 Hz) / 110 sec (50 Hz

or DC supply)

Rotation stroke 95  3

Dimensions see "Dimensions" on pg. 6

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MODELS

Table 1. Models

order number supply voltage end switches power consumption torque

N2024A 24 Vac -- 6 VA / 6 W 20 Nm N2024A-SW2 24 Vac 2 6 VA / 6 W 20 Nm N20230A 230 Vac -- 8 VA / 8 W 20 Nm N20230A-SW2 230 Vac 2 8 VA / 8 W 20 Nm N3424A 24 Vac -- 9 VA / 9 W 34 Nm N34230A 230 Vac -- 13 VA / 10 W 34 Nm

OPERATION / FUNCTIONS

1

2

3

5

6

7

8

4

Fig. 1. Setting units and control elements Legend for Fig. 1:

 Self-centering shaft adapter  Retainer clip

 Rotational angle scales (0...90° / 90...0°)

 Mechanical end limits (20 Nm [177 lb-in] models, only)  Declutch button

 Anti-rotation bracket  Rotation direction switch  Access cover

Rotary Movement Modes

The rotation direction (CW or CCW) is selected using the rotation direction switch, thus eliminating the need to re-wire. To ensure tight closing of the dampers, the actuator has a total rotation stroke of 95°.

As soon as operating power is applied, the actuator may start to run. When power is removed, the actuator remains in position. For actuator-controller wiring instructions, see section "Wiring" on page 3.

Rotation Direction Switch

Service/Off Dir

Rev

Fig. 2. Rotation direction Switch

 Dir (" ") is the default shipping position. When the rotation direction switch is set to this position, the actuator internally switches the rotation direction control signals as stated in section "Wiring Diagrams".

 "Service/Off": When the rotation direction switch is set to this position, all actuator rotary movement is cancelled and all control signals are ignored, thus enabling the actuator to be manually operated (see section "Manual

Adjustment"). The user can then perform maintenance / commissioning without having to remove power from the actuator. To return to the control mode, simply move the rotation direction switch to its former setting.

 Rev (" "): When the rotation direction switch is set to this position, the actuator follows signals as stated in section "Wiring Diagrams".

Two-Position or Floating Control

The actuator is capable of being operated by either a two-position (with continued power supply) or a floating controller. Refer to wiring diagrams for correct connection.

Position Indication

The edge (see arrow in Fig. 3) of the hub adapter indicates the rotation angle position with respect to the rotational angle scales (0...90° / 90...0°). 0 30 60 0 30 60

Fig. 3. Position indication

Manual Adjustment

The gear train can be disengaged using the declutch button, permitting the actuator shaft to be manually rotated to any position.

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Limitation of Rotation Stroke

Two mechanical end limits (adjustable in 5° increments) are provided to limit the angle of rotation as desired (see Fig. 4).

Fig. 4. Mechanical end limits

The mechanical end limits must be securely fastened in place. It is important that they properly mesh with the rotational angle scales when the screws are tightened.

Internal End Switches

NOTE: Applicable to models with internal end switches,

only.

The internal end switches are set to change from "common" to "normally open" at angles of 5° and 85°, respectively, from the totally counterclockwise position.

5° 10° 15° 92.5° 0° 90° -2.5° 75° 80° 85° 85° 80° 75° -2.5° 90° 0° 92.5° 15° 10° 5° 5° 10° 15° 0° 75° 80° 85° 90° CCW internal

end switch CW internalend switch

actuator scale: clockwise

end switch scale

actuator scale: counterclockwise

Fig. 5. Internal end switches

INSTALLATION

These actuators are designed for single-point mounting.

Mounting Instructions

All information and steps are included in the installation instructions supplied with the actuator.

Mounting Position

The actuators can be mounted in any desired orientation (no IP54 if mounted upside down; see Fig. 6). Choose an orientation permitting easy access to the actuator's cables and controls.

Fig. 6. Mounting for IP54

Self-Centering Shaft Adapter

The self-centering shaft adapter can be used for shafts having various diameters (10...27 mm) and shapes (square or round).

In the case of short shafts, the shaft adapter may be reversed and mounted on the duct side.

Stroke Limitation with Mechanical End Limits

The mechanical end limits enable the stroke to be limited from 0...90° in increments of 5°.

Wiring

Connecting to the Power Supply

In order to comply with protection class II, the power source of 24 V actuators must be reliably separated from the network power supply circuits as per DIN VDE 0106, part 101.

Access Cover

To facilitate wiring the actuator to the controller, the access cover can be detached from the actuator.

IMPORTANT

Remove power before detaching the access cover. Once the access cover has been removed, please take care to avoid damaging any of the parts now accessible.

Fig. 12. Access cover (models with internal end switches)

Depending upon the model, the access cover may have one or two terminal blocks, including a layout with a description for each of the terminals.

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WIRING DIAGRAMS

A1: Nxx24A wired for 2-POSITION

CONTROL

A2: Nxx24A wired for FLOATING CONTROL A3: Nxx230A wired for FLOATING CONTROL 24 V~/+

3

4

2

CCW

!

CCW CW

3

4

2

24 V~/+

!

CCW CW

3

4

2

230 V~, L N

A4: Internal end switches (NxxxxxA-SW2)

S1 / CCW 230V 230V 230V 24V 24V SELV 230V 24V SELV 24V S4 / CW CW CCW

S6 S5 S4 S3 S2 S1

MAX. 5 (3) A

CCW CW

Fig. 7. Actuator with access cover removed (models with internal end switches)

OPTIONAL ACCESSORIES

Auxiliary Switch Kit

Order no.: SW2

The auxiliary switches are field-installable parts providing two SPDT freely-adjustable switches. S1 S2 S3 A B S4_S5 S6 _C D 45 0 90 90 0 A B C D

SPARE PARTS

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Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative:

Automation and Control Solutions

Honeywell GmbH Böblinger Strasse 17 71101 Schönaich / Germany Phone: (49) 7031 63701 Fax: (49) 7031 637493 http://ecc.emea.honeywell.com

Subject to change without notice. Printed in Germany

DIMENSIONS

ANTI-ROTATION BRACKET 103 mm 48 m m 95° 223 mm 92 mm 100 0 m m min. 60 mm 230 mm (+/- 0.5 mm) 22.6 mm 2 mm 132 ... 152 mm 0 SHAFT

ADAPTERSHAFT ADAPTER(REAR)

20 mm

13 mm

7 mm