Belimo LM Series User Manual

158
G20492-IG-Subject to change. © Belimo Aircontrols (USA), Inc.
Application
For on-off and floating point control of dampers in HVAC sys-
tems. Actuator sizing should be done in accordance with the
damper manufacturer’s specifications. The actuator mounts
directly to the damper operating shaft with a universal V-bolt
clamp assembly.
Operation
The actuator is not provided with and does not require any limit
switches, but is electronically protected against overload. The
angle of rotation is mechanically limited to 95°. When reaching
the damper or actuator end position, the actuator automatically
stops. The gears can be manually disengaged with a button on
the actuator cover. The position of the actuator is indicated by
a visual pointer. The anti-rotation strap supplied with the actua-
tor will prevent lateral movement.
The LM24-3 US, LM24-3-T US and LM24-3-5P0-T US actuators
use a Brushless DC motor, which is controlled by an Application
Specific Integrated Circuit (ASIC). The ASIC monitors and controls
the actuator’s rotation and provides a digital rotation sensing (DRS)
function to prevent damage to the actuator in a stall condition.
Accessories
11533 T-type anti-rotation bracket
22065 L-type anti-rotation bracket (included)
ZG-LMSA Short shaft adaptor
Tool-06 8mm and 10 mm wrench
LM24-3 (-T) US / LM24-3 (-5P0) (-T) US
On-off/ floating point control, non-spring return, direct coupled, 24 V
Dimensions [All numbers in brackets are in millimeters.]
Torque min. 35 in-lb, for control of damper surfaces up to 8 sq ft.
LM24-3 US
LM24-3-T US
LM24-3-5P0-T US
LM24-3 US
LM24-3-T US
LISTED
94D5
TEMP. IND &
REG. EQUIP.
U
L

®
Technical Data LM24… on-off/floating point
Power supply 24 VAC ± 20% 50/60 Hz 24 VDC ± 10%
Power consumption running: 2 W; holding: 1W
Transformer sizing 3 VA (Class 2 power source)
Electrical connection* 3 ft, 18 GA, UL CL2P plenum cable
Control On-off/Floating point
Overload protection Electronic throughout 0 to 95° rotation
Input impedance 600Ω
Angle of rotation max 95°, adjust. with mechanical stops
Torque min 35 in-lb [4 Nm], Independent of load
Direction of rotation reversible with switch CW/CCW
(not on “-T” models)
Position indication clip-on indicator (not on “-T” models)
Running time 95 seconds
Manual override external push button
Humidity 5 to 95% RH, non-condensing
Ambient temperature -22°F to +122°F [-30°C to +50°C]
Storage temperature -40°F to +176°F [-40°C to +80°C]
Housing type NEMA type 2 (-T models NEMA 1)
Housing material rating UL94-5V
Noise level less than 35 dB (A)
Servicing maintenance free
Agency listings UL873 listed, CSA 22.2
No. 24 certified, CE
Quality standard ISO 9001
Weight 1.2 lbs [0.55 kg]
LM24-3-T.1 US
Electrical connection Screw terminal (for 26 to 14 GA wire)
Housing NEMA type 1
Direction of rotation Reverse wires terminals 2 and 3
LM24-3-5P0-T US
Feedback 5 kΩ, 1W potentiometer
Housing NEMA type 1
Direction of rotation Reverse wires terminals 2 and 3
*Standard cable length is 3 ft [1m]. Optional cable lengths of
6 ft [200m] or 10 ft [300m] are available at additional list price.
©
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20% 100%
1
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3.47" [88]
4.53" [115]
3.68" [93.5]
0.85"
[21.5]
1.28"
[32.5]
2.56"
[65]
2.32"
[58.9]
1/4" to 5/8" [6 to 16]
1/4" to 7/16" [6 to 11]
D014

Belimo LM Series Specifications

General

Brand	Belimo
Model	LM Series
Category	Controller
Language	English