Belimo LRB24-MFT User manual

Technical Data 2448

Power Supply 24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10%

Power consumption in operation 2.5 W

Power consumption in rest

position

1.2 W

Transformer sizing 5 VA (class 2 power source)

Electrical Connection 18 GA plenum cable, 3 ft [1 m], with 1/2”

conduit connector

Overload Protection electronic thoughout 0° to 90° rotation

Operating Range DC 2...10 V (default), 4...20 mA w/ ZG-R01

(500 Ω, 1/4 W resistor), variable (VDC, on/

off, floating point)

Operating range Y variable Start point DC 0.5...30 V

End point DC 2.5...32 V

Input Impedance 100 kΩfor DC 2...10 V (0.1 mA), 500 Ωfor

4...20 mA, 1500 Ωfor PWM and On/Off

Position Feedback DC 2...10 V, Max. 0.5 mA, VDC variable

Angle of rotation 90°

Direction of rotation motor reversible with built-in switch

Position indication Mechanically, pluggable

Manual override external push button

Running Time (Motor) default 150 s, variable 35...150 s

Ambient humidity max. 95% r.H., non-condensing

Ambient temperature -22...122°F [-30...50°C]

Storage temperature -40...176°F [-40...80°C]

Degree of Protection IP42, NEMA 2, UL Enclosure Type 2

Agency Listing cULus acc. to UL60730-1A/-2-14, CAN/CSA

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

Noise level, motor 35 dB(A)

Maintenance maintenance-free

Quality Standard ISO 9001

Weight 1.5 lb [0.70 kg]

†Rated Impulse Voltage 800V, Type action 1.B, Control Pollution Degree 3.

Safety Notes

⚠WARNING: For Belimo Products sold in California, these Products do or

may contain chemicals which are known to the State of California to cause

cancer and or birth defects or other reproductive harms. For more information

see www.p65warnings.ca.gov.

LRB24-MFT

Modulating, Non-Spring Return, 24 V, Multi-Function Technology®

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

Date created, 05/15/2019 - Subject to change. © Belimo Aircontrols (USA), Inc.

Wiring Diagrams

INSTALLATION NOTES

Provide overload protection and disconnect as required.

Actuators may be connected in parallel. Power consumption and input

impedance must be observed.

Actuators may also be powered by 24 VDC.

Only connect common to negative (-) leg of control circuits.

A 500 Ωresistor (ZG-R01) converts the 4 to 20 mA control signal to 2

to 10 VDC.

Control signal may be pulsed from either the Hot (Source) or Common

(Sink) 24 VAC line.

For triac sink the Common connection from the actuator must be

connected to the Hot connection of the controller. Position feedback

cannot be used with a triac sink controller; the actuator internal

common reference is not compatible.

IN4004 or IN4007 diode. (IN4007 supplied, Belimo part number

40155).

Actuators with plenum cable do not have numbers; use color codes

instead.

Meets cULus requirements without the need of an electrical ground

connection.

!WARNING! LIVE ELECTRICAL COMPONENTS!

During installation, testing, servicing and troubleshooting of this

product, it may be necessary to work with live electrical components.

Have a qualified 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 components could result in death or serious injury.

Blk (1)

Red (2)

Pnk (4)

Wht (3)

Org (5)

Line

Volts

Position

Feedback VDC

(+)

(–)

1 3 18

Common

Hot +

Input

U Output

24 VAC Transformer

On/Off

Line

Volts

(–)

(+)

Position

Feedback VD

11810

Blk (1)

Red (2)

Pnk (4)

Wht (3)

Org (5)

Common

Hot +

Input

U Output

24 VAC Transformer

(AC Only)

Floating Point

(–)

(+)

Line

olts

Ω

500

Ω

1/4 watt

Control Signal

VDC / mA

1 3 518

Blk (1)

Red (2)

Pnk (4)

Wht (3)

Org (5)

Common

Hot +

Input

U Output

24 VAC Transformer

VDC/mA Control

Line

Volt

(–)

(+)

Position

Feedback VDC

118

Blk (1)

Red (2)

Pnk (4)

Wht (3)

Org (5)

Common

Hot +

Y2Input

Y1Input

U Output

24 VAC Transformer

(AC Only)

PWM Control

LRB24-MFT

Modulating, Non-Spring Return, 24 V, Multi-Function Technology®

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

Date created, 05/15/2019 - Subject to change. © Belimo Aircontrols (USA), Inc.

Functions

50%

100%

Control mode acc. to Y

Min

Mid

Max

Normal

abcOrg (5)

24 VAC Transformer (AC Only)

U Output

1 5

Blk (1) Common

Red (2) + Hot

Pnk (4)

Wht (3)

(–)

(+)

Line

Volts

VDC / mA

Control Signal

Y2Input

Y1Input

182

Override Control

LRB24-MFT

Modulating, Non-Spring Return, 24 V, Multi-Function Technology®

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

Date created, 05/15/2019 - Subject to change. © Belimo Aircontrols (USA), Inc.

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