Belimo LMB24-3-T User Manual

Wiring Diagrams
LMB24-3 (-S)(-T)
On/Off-Floating Point Control, Non-Spring Return, Direct Coupled, 24 V
201
J20741 - Subject to change. © Belimo Aircontrols (USA), Inc.
LM
®
LMB24-3 - Typical Specification:
Floating point, on/off control damper actuators shall be elec-
tronic direct-coupled type, which require no crankarm and link-
age and be capable of direct mounting to a shaft from 1/4” to
5/8”. Shafts up to 3/4” diameter can be accommodate with an
accessory clamp. Actuators shall have Brushless DC motor
technology and be protected from overload at all angles of rota-
tion. Actuators shall have reversing switch and manual override
on the cover. If required, actuator will be provided with screw
terminal strip for electrical connections (LMB24-3-T). If
required, actuators shall be provided with one adjustable SPDT
auxiliary switch. Actuators with auxiliary switches must be con-
structed to meet the requirements for double insulation so an
electrical ground is not required to meet agency listings. Run
time shall be constant and independent of torque. Actuators
shall be cULus listed, have a 5-year warranty, and be manu-
factured under ISO 9001 International Quality Control
Standards. Actuators shall be as manufactured by Belimo.
Accessories
K-LM20 3/4” [20 mm] Shaft Clamp
AV6-20 Shaft Extension
ZG-LMSA Shaft Adaptor for 1/2” Diameter Shafts
ZG-LMSA-1 Shaft Adaptor for 3/8” Diameter Shafts
ZS-T Terminal Cover for NEMA 2
ZS-100 Weather Shield - Steel
ZS-150 Weather Shield - Polycarbonate
Tool-06 8 mm & 10 mm Wrench
S1A, S2A Auxiliary Switch (es)
P370 Shaft Mount Auxiliary Switch
P…A Feedback Potentiometers
Note: When using LMB24-3… actuators, only use acces-
sories listed on this page.
1
2
4
24 VAC Transformer
a open
a closed
The indication of direction
is valid for switch position 1.
Blk (1) Common
Red (2) +
Wht (3) +
a
Line
Volts
–
10
W266
1
2
4
24 VAC Transformer
The indication of direction
is valid for switch position 1.
Blk (1) Common
Red (2) +
Wht (3) +
Line
Volts
–
10
W267
On/Off
Auxiliary Switch of LMB24-3-S
4
3
Vlt (S1)
Red (S2)
Wht (S3)
NC
NO
0° to 95°
W268
Floating Point or On/Off control
3
4
Meets cULus requirements without the need of an
electrical ground connection.
For end position indication, interlock control, fan startup,
etc., xMB24-3-S incorporates one built-in auxiliary
switches: 1 x SPDT, 3A (0.5A) @250 VAC, UL listed,
adjustable 0° to 95°.
1
2
Provide overload protection and disconnect as required.
Actuators may also be powered by 24 VDC.
Notes:

Belimo LMB24-3-T Specifications

General

Power Supply	24 VAC/DC
Control Type	On/Off, Floating Point
Angle of Rotation	95°
Housing Material	UL94-5VA
Type	Non-Spring Return
Running Time	75 seconds
Agency Listing	cULus
Protection Class	IP54
Mounting	Direct Mount
Operating Temperature	-22°F to +122°F