CaptiveAire NMQ24-MFTUS User Manual

146

G20492-IG-Subject to change. © Belimo Aircontrols (USA), Inc.

Application

For proportional modulation of dampers in HVAC systems with
fast running requirements, or some Laboratory fume hoods.
The NMQ24-MFT US is a non-spring return type actuator.
When supply power is removed the actuator will maintain its last
position.

Default/Configuration

The default parameters for 2 to 10 VDC applications of the
NMQ24-MFT US actuator are assigned during manufacturing.
If necessary, custom versions of the actuators can be ordered.
The parameters noted in the Technical Data table are variable.

These parameters can only be changed by pre-set configu­rations from Belimo.

Operation

The NMQ24-MFT US actuator provides 95° of rotation and is pro­vided with a position indicator. Upon installation and wiring the
manual override push button must be pressed twice, so the actua­tor will perform an adaptation and use the new mechanical points
for zero position during normal control operations.

The actuator uses a brushless DC motor which is controlled by
an Application Specific Integrated Circuit (ASIC) and a micro­processor. The microprocessor provides the intelligence to the
ASIC to provide a constant rotation rate and to know the actua­tor’s exact position. The ASIC monitors and controls the
brushless DC motor’s rotation and provides a Digital Rotation
Sensing (DRS) function to prevent damage to the actuator in a
stall condition. The position feedback signal is generated with
out the need for mechanical feedback potentiometers using
DRS. The actuator may be stalled anywhere in its normal rota­tion without the need of mechanical end switches.

Installation

The NMQ24-MFT US is mounted directly to control shafts up
to 3/4” diameter by means of its universal clamp and anti-rota­tion bracket. The actuator provides constant torque to the
application with and without power applied to the actuator. The
NMQ24-MFT US actuator is shipped in a Mid position, com­pression against seats or gaskets for tight shut-off is accom­plished manually.

After mounting and completing electrical installation the
NMQ24-MFT US must have the adaptation function initiated.
This is accomplished by pressing the manual override consec­utively two times within four seconds.

Technical Data NMQ24-MFT US

Power supply 24 VAC, ±5%, 50/60 Hz

24 VDC, ± 5%
Power consumption running: 9 W; holding: 1.2 W
Transformer sizing 12 VA (Class 2 power source)
Electrical 3 ft, 18 GA, plenum cable,

connection 1/2” conduit connector
Overload protection electronic throughout 0 to 95° rotation

Operating range Y*†2 to 10 VDC, 4 to 20 mA

(w/500 Ω, 1/4 W resistor) ZG-R01
Control resolution Response sensitivity, 80 mV

Reverse sensitivity, 80 mV

Sensitivity when driving off mechanical

position, 140 mV
Input impedance 100kΩ for 2 to 10 VDC (0.1 mA)

500Ω for 4 to 20 mA

Feedback output U* 2 to 10 VDC, 0.5 mA max
Torque* min 35 in-lb (4 Nm)
Direction of rotation* reversible with switch L/R

L=CW with increase in signal

R=CCW with a increase in signal

Angle of rotation* 0 to 95°, adjust with mechanical stops
Running time* 5.0 seconds constant for 95° rotation
Angle of Rotation On-manual (Default) when less

Adaptation* than 95% angle

Manual override Manual push button
Position indication clip on indicator
Humidity 5 to 95% RH, non-condensing
Ambient temperature -4 to +122°F (-20 to +50°C)
Storage temperature-40 to +176° F (-40 to +80° C)
Housing NEMA 2, IP54
Housing material UL 94-5VB (flammability rating)
Noise level less than 52 dB (A)
Agency listings UL 873 listed, CE, CSA C22.2

No .24 certified
Quality standard ISO 9001
Servicing maintenance free
Weight 1.8 lbs. (0.8kg.)

* Variable when configured with MFT options
† Only VDC proportional control signal is available, and

variable (eg: 0-10 VDC)

Dimensions [All numbers in brackets are in millimeters.]

• Torque min. 35 in-lb

• Running time 5.0 to 8.0 seconds (5 sec. DEFAULT)

• Control 2 to 10 VDC (DEFAULT)

• Feedback 2 to 10 VDC (DEFAULT)

NMQ24-MFT US

Fast acting, proportional damper actuator, non-spring return, Multi-Function Technology

®

NMQ24-MFT US

D016

LISTED
94D5

U

TEMP. IND &
REG. EQUIP.

L



3/8" to 3/4"
[9.5 – 20]

3/8" to 5/8"
[9.5 – 16]

7/8"
[22]

5 1/2" [140]

6 13/32'' [163]

1 1/16" [27]

5/32"

[9]

7/32"

[5.2]

2 3/32"

[58]

3 3/16"

[81]

®

NM

147

G20492-Subject to change. © Belimo Aircontrols (USA), Inc.

®

Override to open or closed position

2 to 10 VDC and 4 to 20 mA Control

Notes

2

3

1

Provide overload protection and disconnect as required.
Actuators may be connected in parallel if not mechanically

mounted to the same shaft. Power consumption and input
impedance must be observed.

Actuator may also be powered by 24 VDC.
ZG-R01 may be used.

4

NMQ24-MFT US

Fast acting, proportional damper actuator, non-spring return, Multi-Function Technology

®

Control Motion

Input Position Running

Configuration range feedback time Torque
P-11001 2-10 VDC 2-10 VDC 5.0 sec 35 in-lbs
P-11002 0-10 VDC 0-10 VDC 5.0 sec 35 in-lbs
P-11003 2-10 VDC 2-10 VDC 6.0 sec 44 in-lbs
P-11004 2-10 VDC 2-10 VDC 7.0 sec 53 in-lbs
P-11005 2-10 VDC 2-10 VDC 8.0 sec 58 in-lbs

Run times available up to 60 sec. @ 58 in-lbs

Available configurations for the NMQ24-MFT US

Start point span adjustable control input is available. Please
consult Belimo for the proper configuration code.

PWM and Floating point control inputs are not available
with this actuator.

Response sensitivity and reverse hysteresis, for VDC applications

All listed mV values are converted to “degrees of rotation” for all other control modes.

The reverse hysteresis away from

mechanical end position is 140mV

W171

W170

24 VAC Transformer

1

Line
Volts

3

Control Signal

2 to 10 VDC

2 to 10 VDC Feedback signal

(–)
(+)

24 VAC Transformer

1

Line
Volts

3

Control Signal

4 to 20 mA

Ω

(–)
(+)

4

2 to 10 VDC Feedback signal

Standard Wiring - VDC

Blk (1) Common

(2) + Hot

Red

2

Wht

(3) Y1 Input, 2 to 10V

Grn (5) U Output, 2 to 10V

CCW CW

NMQ24-MFT US

Standard Wiring - mA

Blk

(1) Common

(2) + Hot

500Ω

1/4 watt

Red

2

Wht

(3) Y1 Input, 2 to 10V

Grn (5) U Output, 2 to 10V

CCW CW

NMQ24-MFT US

24 VAC Transformer

1

3

Line
Volts

3

Control Signal

4 to 20 mA

A Open = 4 mA Position

A Closed = Normal Operation

Override to zero position

500Ω

1/4 watt

2

A

Ω

(–)
(+)

4

Blk (1) Common

(2) + Hot

Red

(3) Y1 Input, 2 to 10V

Wht

Override to 100% position

24 VAC Transformer

1

Line

3

Volts

3

Control Signal

4 to 20 mA

B Closed = 20 mA Position
C Closed = Normal Operation

(–)
(+)

Ω

500Ω

4

1/4 watt

B

C

Blk (1) Common

(2) + Hot

Red

2

(3) Y1 Input, 2 to 10V

Wht

With a 4-20 mA Input, up to 4 actuators may
be wired in parallel. A 2% shift in the signal
is seen when using a 500Ω resistor. Power
consumption must be observed.

Actuator responds to a 80 mV signal

when not changing direction.

Control

Direction

Satisfied

Control Position

80 mV

Minimum

Control

Resolution

Actuator responds to a 80 mV signal when

reversing direction from stop position.

Minimum Reversed

Control Deadband

80 mV

Satisfied

Control Position

Previous

Control

Direction