Belimo LMC24 User Manual

LMC24-SR Damper actuator 2 Nm
8
Dimensions
Wiring diagram
Y DC 0...10 V
U DC 2...10 V
Control manufacturers: ABB, AEG, Bälz, Centra, Con-
trolli, C.S.I, Danfoss, DIGI'Control, Elesta, GA, H.C.Sys-
tem, Honeywell, Inel, IWK, Johnson, Kieback & Peter,
Landis & Staefa,, Messner, Priva, RAM, R+S, Samson,
Satchwell, Sauter, SE-Electronic, Siemens, TA, Trend.
Measuring voltage U for position indicating or
as master-slave control signal.
anticlock-
wise-closing
damper
100
0
Y
[ V ]
10
0
% of set angle
50
2
5
Closed
Y
123
LMC24-SR
5
U
T
~
AC 24 V
-
+
DC 24 V
T
~
-
+
!
Reversing
switch R
Y = 0
Reversing
switch L
Y = 0
Open
Open
Connect via
safety isolating
transformer
Parallel connection of several
actuators is possible. Power
consumption must be observed.
Closed
clockwise-
closing
damper
Subject to technical changes / 01.00
Technical data LMC24-SR
Nominal voltage AC 24 V 50/60 Hz, DC 24 V
Nominal voltage range AC 19.2…28.8 V, DC 21.6…26.4 V
For wire sizing 4 .5 VA
Power consumption 2 .5 W
Connecting cable 1 m long, 4 × 0.75 mm
2
Control signal Y DC 0…10 V @ input resistance = 100 kΩ
Operating range DC 2…10 V
(for set angle of rotation)
Measuring voltage U DC 2…10 V @ ≤ 0.5 mA (for set angle of rotation)
Synchronism tolerance ± 5%
Direction of rotation selected with L/R switch
(at Y = 0 V) at switch position L  resp. R 
Manual operating Pushbutton, self resetting
Torque min. 2 Nm
(at rated voltage)
Angle of rotation max. 95°
(adjustable with potentiometer 20…100%)
Running time 25...35 s for  95° (0…2 Nm)
Sound power level max. 45 dB (A)
Position indication mechanical
Protection class
(safety low voltage)
Degree of protection IP 54 (bottom cable entry)
Ambient temperature range – 30... + 50 °C
Non-operating temperature – 40... + 80 °C
Humidity test to EN 60335-1
EMC CE according to 89/336/EEC, 92/31/EEC, 93/68/EEC
Maintenance maintenance-free
Weight 620 g
Dampers up to approx. 0.4 m
2
Modulating damper actuator
(AC/DC 24 V)
Control DC 0…10 V and posi-
tion feedback DC 2… 10 V
Running time < 35 s
Application
The type LMC24-SR is intended for the
operation of air control dampers in venti-
lation and air-conditioning systems.
Mode of operation
The actuator is controlled by a standard
DC 0…10 V signal and runs to whatever
position is specified by the signal. The
purpose of measuring voltage U is to
provide 0…100% electrical indication of
damper position and to act as a master-
slave control signal for other actuators.
Product features
Simple direct mounting on the damper
spindle by universal spindle clamp. An
antirotation device is supplied to prevent
unwanted rotation of the whole unit.
Steplessly adjustable angle of rotation
by integral potentiometer. Range match-
ing of the working range and measuring
signal U is performed automatically by
the actuator.
Manual operation by self-resetting push-
button
when necessary (the gearing is
disengaged while the pushbutton is held
depressed).
High functional reliability
The actuator is overload-proof, needs no
limit switches and halts automatically at
the end stops.
Electrical accessories (se Doc. 2.Z-...)
SG..24 Positioners
ZAD24 Digital position indicator
Mounting instructions page 9
Control and monitoring functions,
page 10
Important
Read the notes about the use and torque
requirements of the damper actuators on
page 2.
ap021901
0
1
94.1
89
116.2
22.1
66.2
5.2
59
33.5
6...16
d0002805
BC
III
aw091001

Belimo LMC24 Specifications

General

Brand	Belimo
Model	LMC24
Category	Controller
Language	English