Greenheck NFB24-SR User Manual

NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-

Torq

actuator.

positi

3.5 W

condui

)

500

ibl

)

];

95 seconds

Positi

Ambi

/CS

006/95/EC

dB(A)

900

Auxili

Proportional, Spring Return, 24 V, for 2 or 10 VDC or 4 to 20 mA Control Signa

ue min. 90 in-lb, for control of air dampers

Applicatio

or proportional modulation of dampers in HVAC systems. Actuator sizing should be one in accordance with the damper manufacturer’s specifications.

he actuator is mounted directly to a damper shaft up to 1.05” in diameter by means f its universal clamp. A crank arm and several mounting brackets are available for pplications where the actuator cannot be direct coupled to the damper shaft

he actuator operates in response to a 2 to 10 VDC, or with the addition of a 500Ω

esistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to

0 VDC feedback signal is provided for position indication. Not to be used for a

master-slave a

eratio

he NFB and NFX series actuators provide true spring return operation for reliable failafe application and positive close-off on air tight dampers. The spring return system

Technical Data NFB24-SR, NFB24-SR-S,

NFX24-SR, NFX24-SR-S

ower supply 24 VAC ±20%, 50/60 Hz

Power consumption running

Transformer sizin Electrical connectio

NFB..

NFX..

Overload protectio Operating range Input impedanc

Feedback output Torque 90 in-lb [10 Nm] minimum Direction of rotatio

Mechanical angle of rotatio

Running tim

on indicatio

Manual overri Humidit

ent temperatur

torage temperatur Housing Nema 2, IP54, Enclosure Type Housing material zinc coated metal and plastic casin

ency listin

Noise level ≤40dB(A) motor @ 95 seconds

ervicin Quality standar Weigh

† Rated Impulse Voltage 800V, Type of action 1.AA (1.AA.B for -S version), Control Pollution Degree 3.

NFB24-SR-S, NFX24-SR-

†

ary switche

24 VDC +20% / -10%

holdin

2.5 6 VA (class 2 power source)

ft, 18 GA appliance cable, 1/2" conduit

onnector

-S models: two 3 ft, 18 gauge appliance cables ith 1/2” conduit connectors

t [1m], 10 ft [3m] or 16 ft [5m] 18 GA

appliance or plenum cables, with or without 1/2”

onduit connecto

-S models: Two 3ft [1m], 10 ft [3m] or

6 ft [5m] appliance cables, with or without 1/2"

t connectors electronic throughout 0 to 95° rotatio 2 to 10 VDC, 4 to 20mA

00 kΩ for 2 to 10 VDC (0.1 mA

Ω for 4 to 20 mA

2 to 10 VDC (max. 0.5 mA)

prin

eversible with CW/CCW mountin

moto

evers

e with built-in switc 95° (adjustable with mechanical end stop, 35° to 95°

prin

20 seconds @ -4°F to 122°F [-20°C to 50°C 60 seconds @ -22°F [-30°

motor

sual indicator, 0° to 95°

(0° is full spring return position)

mm hex crank (³⁄₁₆

ax. 95% RH non-condensin 22°F to 122°F [-30°C to 50° 40°F to 176°F [-40°C to 80°

ULus acc. to UL60730-1A/-2-14, CAN

E60730-1:02, CE acc. to 2004/108/EC & 2

≤62

spring retur

intenance fr

ISO

4.15 lbs (1.9 kg); 4.4 lbs (2.0 kg) with switches

2 x SPDT 3A (0.5A) @ 250 VAC, UL approve one set at +10°, one adjustable 10° to 90

Allen), supplie

rovides constant torque to the damper with, and without, power applied to the

he NFB and NFX series provides 95° of rotation and is provided with a graduated

on indicator showing 0° to 95°.

he NFB24-SR and NFX24-SR uses a brushless DC motor which is controlled by an pplication Specific Integrated Circuit (ASIC) and a microprocessor. The

microprocessor provides the intelli

nd to know the actuator’s exact fail-safe position. The ASIC monitors and controls

the brushless DC motor’s rotation and provides a digital rotation sensing function to

revent damage to the actuator in a stall condition. The actuator may be stalled nywhere in its normal rotation without the need of mechanical end switches

he NFB24-SR-S and NFX24-SR-S versions are provided with two built-in auxiliar witches. These SPDT switches provide safety interfacing or signaling, for example, for

an start-up. The switching function at the fail-safe position is fixed at +10°, the other

witch function is adjustable between +10° to +90°. The NFB24-SR, NFB24-SR-S,

FX24-SR and NFX24-SR-S actuator is shipped at +5° (5° from full fail-safe) to

rovide automatic compression against damper gaskets for tight shut-off.

Dimensions (Inches [mm])

lication

K7-2 (supplied)

1/2" Centered (Default)

3/4" Centered (Field Selectable)

ence to the ASIC to provide a constant rotation rate

1.05" Centered (Field Selectable)

WAFBNFBDim

M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA

NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-

)

300

500

Live Electrical Components!

(

)

(

)

(

)

(

)

Proportional, Spring Return, 24 V, for 2 or 10 VDC to 4 to 20 mA Control Signal

Accessories

AV 8-2 IND-AFB Damper position indicator KH-AF K7-2 Universal clamp for up to 1.05” dia jackshafts TF-CC U ToolZG-1 ZG-101 ZG-11

ZG-AF ZG-AFB118 ZS-100 Weather shield (metal ZS-150 ZS-260 ZS-

NOTE: When using NFB24-SR, NFB24-SR-S, NFX24-SR and NFX24-SR-S actuators, only use accessories listed on this page.

or actuator wiring information and diagrams, refer to Belimo Wiring Guide.

haft extension

rank arm

onduit fitting

mm and 10 mm wren

Universal mounting bracke

niversal mounting bracke Mounting bracket for Barber Colman MA 3../4.., Honeywel Mod III or IV or Johnson Series 100 replacement or new crank arm type installation

rank arm adaptor kit

eather shield (polycarbonate

xplosion-proof housin

EMA 4X housin

Typical Specification

Spring return control damper actuators shall be direct coupled type which require no

rank arm and linkage and be capable of direct mounting to a jackshaft up to a 1.05” diameter. The actuator must provide proportional damper control in response to a 2 to 10 VDC or, with the addition of a 500 resistor, a 4 to 20 mA control input from an electronic controller or positioner. The actuators must be designed so that they may be used for either clockwise or counterclockwise fail-safe operation. Actuators shall use a brushless DC motor controlled by a microprocessor and be protected from overload at all angles of rotation. Run time shall be constant, and independent of torque. A 2 to 10 VDC feedback signal shall be provided for position feedback. Actuators shall be

ULus Approved and have a 5 year warranty, and be manufactured under ISO 9001

nternational Quality Control Standards. Actuators shall be as manufactured by Belimo

Wiring Diagrams

During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualiﬁ ed licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical compo nents could result in death or serious injury

24 VAC Transformer

Line Volts

Control Signal

2 to 10 VDC

(–)

(+)

1 Common

2 + Hot

3 Y1 Input,

5 U Output

NFB24-SR, NFB24-SR-S NFX24-SR, NFX24-SR-S

2 to 10V

to 10 VDC control of NFB24-SR and NFX24-SR

NFB24-SR, NFB24-SR-S NFX24-SR, NFX24-SR-S

to 20 mA control of NFB24-SR and NFX24-SR wit to 10 VDC feedback output

24-S X

W068_NFB

24-S X

069_NFB

, Inc.

USA

Provide overload protection and disconnect as required

AUTION Equipment Damage

ctuators may be connected in paralle

Power consumption and input impedance must be observed.

Up to 4 actuators may be connected in parallel. With 4 actuators

ect to chan

M40024 - 05/10 - Sub

wired to one

Actuator may also be powered by 24 VD

For end position indication, interlock control, fan startup, etc., NFB24-SR-S and NFX24-SR-S incorporates two built-in auxiliary switches: 2 x SPDT, 3A (0.5A) @250 VAC, UL Approved, one switch is ﬁ xed at +10°, one is adjust able 10° to 90°

Only connect common to neg. (–) leg of control circuits

he ZG-R01

2 to 10 VDC.

Ω resistor. Power consumption must be observed.

NFB24-SR-S NFX24-SR-S

Auxiliary switches for NFB24-SR-S, NFX24-SR-S

resistor converts the 4 to 20 mA control signal t

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA

24_SR_X

W064_NFB

+ 2 hidden pages