NMB24-SR, NMB24-SR-T, NMX24-SR, NMX24-SR

NMB24-SR, NMB24-SR-T, NMX24-SR, NMX24-SR
NMB(X)24-SR(-T)
Proportional, Non-Spring Return, 24 V, for 2 to 10 VDC or 4 to 20 mA
Torque min. 90 in-lb for control of damper surfaces up to 22 sq ft.
Application
For proportional modulation of dampers in HVAC systems. Actuator sizing should be
done in accordance with the damper manufacturer’s specifications.
The actuator is mounted directly to a damper shaft up to 1.05" in diameter by means
of its universal clamp, 1/2” self centered default. A crank arm and several mounting
brackets are available for applications where the actuator cannot be direct coupled to
the damper shaft.
The actuator operates in response to a 2 to 10 VDC, or with the addition of a
500 Ω resistor, a 4 to 20 mA control input from an electronic controller or positioner.
A 2 to 10 VDC feedback signal is provided for position indication or master-slave
applications.
Operation
The actuator is not provided with and does not require any limit switches, but is
electronically protected against overload. The anti-rotation strap supplied with the
actuator will prevent lateral movement.
Overload protection
Operating range Y
Input impedance
Angle of rotation
Torque
Direction of rotation
Position indication
Manual override
Running time
Humidity
Ambient temperature
Storage temperature
Housing
Housing material
Agency listings†
Noise level
Servicing
Quality standard
Weight
NMB(X)24-SR-T
Electrical connection
The NMB(X)24-SR… actuators use a sensorless 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.Power consumption is reduced in
holding mode.
Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto
the actuator body for signaling and switching functions.
Dimensions (Inches [mm])
1/2” to 1.05” [12.7 to 26.67]
2/5” to 1.05” [10 to 26.67]
3.66” [93]
To center of
mounting slot.
4.88” [124]
0.98”
[25]
3.9” [99]
2” [50.8]
screw terminal (for 26 to 14 GA wire)
unprotected (NEMA 1/IP20)
†Rated Impulse Voltage 800V, Type of action 1, Control Pollution Degree 3.
800-543-9038 USA
253
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.
Power consumption
Transformer sizing
Electrical connection
D121
24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
2.5 W (0.4 W)
5 VA (Class 2 power source)
18 GA plenum rated cable
1/2” conduit connector
protected NEMA 2 (IP54)
3 ft [1m] 10 ft [3m] 16 ft [5m]
electronic throughout 0 to 95° rotation
2 to 10 VDC, 4 to 20 mA
100 kΩ (0.1 mA), 500 Ω
max. 95°, adjustable with mechanical stop
90 in-lb [10 Nm]
reversible with
switch
actuator will move:
=CCW with decreasing control signal (10 to 2V)
=CW with decreasing control signal (10 to 2V)
reflective visual indicator (snap-on)
external push button
150 seconds 95 seconds 60 seconds 45 seconds
constant independent of load
5 to 95% RH non condensing (EN 60730-1)
-22°F to 122°F [-30°C to 50°C]
-40°F to 176°F [-40°C to 80°C]
NEMA 2, IP54, UL enclosure type 2
UL94-5VA
cULus acc. to UL 60730-1A/-2-14,
CAN/CSA E60730-1:02,
CE acc. to 2004/108/EEC and 2006/95/EC
<45dB(A)
maintenance free
ISO 9001
1.7 lbs [0.75 kg]
2.42” [61.4]
Power supply
The NMB(X) series provides 95° of rotation and a visual indicator indicates position of
the actuator. 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.
2.36” [60]
NMB(X)24-SR(-T)
3.15” [80]
Technical Data
NMB(X)24-SR(-T)
Proportional, Non-Spring Return, 24 V, for 2 to 10 VDC or 4 to 20 mA
Accessories
Wiring Diagrams
Reversible Clamp
Universal Mounting Bracket
Universal Mounting Bracket
Universal Mounting Bracket
Universal Mounting Bracket
Crank arm Adaptor Kit
Universal Shaft Extension
Shaft Adaptor
Terminal Cover for NEMA 2
Weather Shield - Steel
Weather Shield - Polycarbonate
8 mm & 10 mm Wrench
Auxiliary Switch (es)
Shaft Mount Auxiliary Switch
Feedback Potentiometers
Min positioners in NEMA 4 housing
Min positioners for flush panel mounting
Pulse Width Modulation Interface
Input Rescaling Module
Analog to Digital Switch
Resistor for 4 to 20 mA Conversion
Battery Back-Up Module
Transformer
1
Provide overload protection and disconnect as required.
2
CAUTION Equipment Damage!
3
Actuators may also be powered by 24 VDC.
5
Only connect common to neg. (–) leg of control circuits.
Actuators may be connected in parallel.
Power consumption and input impedance must be observed.
The ZG-R01 500 Ω resistor converts the 4 to 20 mA control signal to
2 to 10 VDC, up to 2 actuators may be connected in parallel.
WARNING
G 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.
W261_08
K-NA
ZG-100
ZG-101
ZG-103
ZG-104
ZG-NMA
AV8-25
ZG-NMSA-1
ZS-T
ZS-100
ZS-150
Tool-06
S1A, S2A
P370
P…A
SGA24
SGF24
PTA-250
IRM-100
ADS-100
ZG-R01
NSV24 US
ZG-X40
NOTE: When using NMB(X)24-SR… actuators, only use accessories listed on this page.
Proportional control damper actuators shall be electronic direct-coupled type, which
require no crank arm and linkage and be capable of direct mounting to a shaft up
to 1.05” diameter. Actuators must provide proportional damper control in response
to a 2 to 10 VDC or, with the addition of a 500 Ω resistor, a 4 to 20 mA control input
from an electronic controller or positioner. Actuators shall have brushless DC motor
technology and be protected from overload at all angles of rotation. Actuators shall
have reversing switch and manual override on the cover. If required, actuator will
be provided with screw terminal strip for electrical connections (NMX24-SR-T). Run
time shall be constant and independent of torque. A 2 to 10 VDC feedback signal
shall be provided for position indication. Actuators shall be cULus listed, have a
5-year warranty, and be manufactured under ISO 9001 International Quality Control
Standards. Actuators shall be as manufactured by Belimo.
2 to 10 VDC control
W261_08
M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.
Typical Specification
4 to 20 mA control
800-543-9038 USA
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
254
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