Belimo LM24-SR US User Manual

156
G20492-IG-Subject to change. © Belimo Aircontrols (USA), Inc.
LM Series Direct Coupled Actuator
Areas of Application
Small Yet Powerful
● Minimum 35 in-lb torque in a compact package.
For damper areas up to 8 sq-ft*.
®
LM Series – at a glance
LM24-10P US (p.162)
LM24-SR US (p. 160)
LMC24 US (p.164)
LMC24-SR-T US (p.164)
LM24-MFT US (p.166)
Rack and pinion type actuator
replaced by direct coupled LM.
Replacement LM24 compatible
with existing control system.
VAV Units and Small Zone Dampers
Quiet Plus
®
VAV
terminal unit by
Warren Technology
LM24-3 US (p. 158)
Torque: 35 in-lb ●●●●●●●●●●●
Power supply : 24 VAC/DC ●●●●●●●●●●●
Brushless DC motor: ●● ●●
Control signal: on-off ●●●●● ●
floating point ●● ●●
proportional 2 to 10 VDC ●● ●●
Multi-function** ●
Feedback signal: 2 to 10 VDC ●●
VDC variable** ●
10kΩ feedback potentiometer ●
5kΩ feedback potentiometer ●
Run time: 95 sec ●●
80 to 110 sec for 0 to 35 in-lb ●●●
25 to 35 sec for 0 to 18 in-lb ●●●
Adj. 75 to 300 sec.*** ●
Left/Right rotation switch ●●●●●●●●●
Angle of rotation limiting (mechanical) ●●●●● ●● ●●
Angle of rotation limiting (electronic) ●●
Plenum rated cable, 18 GA ●●●●●●●
Screw terminal strip ●●●●
Manual override push-button ●●●●●●●●●●●
Built-in auxiliary switch ●
Installation instructions ......(p. 168–170) General wiring ..............(p. 169)
Start-up and checkout ......(p. 171)
*Based on 4 in-lb/ft
2
damper torque loading. Parallel blade. No edge seals. **Default 2 to 10 VDC ***Default 150 seconds
Halomo Brushless DC Motor Technology
LM24-3-T US (p.158)
LM24-S US (p.162)
LM24-3-5P0-T US (p.158)
LM24-SR-T US (p. 160)
LMC24-SR US (p.164)
Replacement Belimo
actuator (LM type)
direct couples to VAV
By-Pass damper shaft.
Existing pneumatic
actuator requires linkage.
H
H
H
H
H
©
Actuators
in bold have
BDCM
H

Belimo LM24-SR US Specifications

General

Power Supply	24 V AC/DC
Type	Spring Return
Angle of Rotation	90°
Protection Class	IP54
Control Type	Modulating
Control Signal	0...10 V
Output Signal	0...10 V
Rotation	Clockwise/Counter-Clockwise
Mounting	Direct mounting on damper shaft

Summary

Areas of Application

VAV Units and Small Zone Dampers

Describes common applications for the actuators in HVAC systems.

LM Series – at a glance

LM24-3 (-T) US / LM24-3 (-5P0) (-T) US

Technical Data

Detailed specifications for the LM24-3 series actuators.

Application

Information on how the actuators are used in HVAC systems.

Operation

Explanation of how the LM24-3 series actuators function.

Accessories

List of available accessories for the LM24-3 series.

LM24-SR (-T) US

Technical Data

Detailed specifications for the LM24-SR series actuators.

Application

Proportional modulation of dampers in HVAC systems.

Operation

How the LM24-SR series actuators operate and their features.

Accessories

List of available accessories for the LM24-SR series.

LM24-S US, LM24-10P US

Technical Data

Specifications for LM24-S and LM24-10P actuators.

Application

Use of LM24-S and LM24-10P actuators for on-off control.

Operation

How the LM24-S and LM24-10P actuators function.

Accessories

Available accessories for LM24-S and LM24-10P actuators.

LMC24 (-SR) (-T) US

Technical Data

Specifications for LMC24 series actuators.

Application

Application of LMC24 actuators for on-off and proportional control.

Operation

How the LMC24 series actuators operate.

Accessories

List of accessories for LMC24 series actuators.

LM24-MFT US

Technical Data

Specifications for the LM24-MFT US actuator.

Default/Configuration

Default parameters and configuration options for LM24-MFT US.

Operation

How the LM24-MFT US actuator operates and its features.

Installation Instructions

Quick-mount visual instructions

Step-by-step visual guide for mounting the actuator.

Preliminary steps

Important considerations before installing the actuator.

General Wiring

Wiring guidelines and precautions for LM series actuators.

Transformer(s)

Guidelines for selecting and wiring transformers for actuators.

Wire length for LM Series actuators

Maximum allowable wire lengths for LM series actuators.

Wire Type and Wire Installation Tips

Recommendations for wire types and installation practices.

LM Series Actuators with Terminal Strip

Details on terminal strip connections for LM series actuators.

Feature Operation

Explanation of specific operational features of the actuators.

Manual Override

How to use the manual override feature on the actuator.

Direction of Rotation Switch

How to set and use the direction of rotation switch.

Mechanical Angle of Rotation Limiting

Adjusting mechanical stops for angle of rotation.

Electronic Angle of Rotation Limiting

Electronic adjustment of rotation angle for LM24-SR US.

Control Accuracy and Stability

Details on actuator accuracy and stability performance.

Startup and Checkout

Electrical check-out procedure

Procedure for electrically checking actuator startup.