Damp.Rotary(EFS), 54in-lb, SR(2-10V),24V| Actuator Type | Electronic fail-safe |
|---|
| Electrical Connection | cable |
|---|
| Direction of Rotation (Fail-Safe) | reversible with switch |
|---|
| Direction of Rotation (Motor) | reversible with built-in switch |
|---|
| Power Consumption (Holding) | 3�W |
|---|
| Power Consumption (Running) | 11 W |
|---|
| Degree of Protection | NEMA�2, UL�Enclosure�Type�2 |
|---|
| Shaft Diameter | 1/2" to 1.05" round, centers on 1/2" and 3/4" with insert, 1.05" without insert |
|---|
| Manual Override | external push button |
|---|
| Application | For fail-safe, proportional control of dampers in HVAC systems. Actuator sizing
should be done in accordance with the damper manufacturer?s specifi cations.
The actuator is mounted directly to a damper shaft up to 1.05? in diameter
by means of its universal clamp. 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? 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. Not to be used for a master-slave application. |
|---|
| Servicing | maintenance free |
|---|
| Power Supply | 24VAC �20% 50/60Hz 24VDC �10% |
|---|
| Transformer Sizing | 22VA (class 2 power source) |
|---|
| Electrical Connection | 18 GA plenum rated cable �" conduit connector protected NEMA 2 (IP54) 3 ft [1m] 10 ft [3m] 16 ft [5m] |
|---|
| Overload Protection | electronic throughout 0 to 95 rotation |
|---|
| Input Impedance | 100k� (0.1 mA), 500� |
|---|
| Angle of Rotation | max. 95�, adjustable with mechanical stop electronically variable |
|---|
| Manual Override | external push button |
|---|
| Housing | NEMA2, IP54, UL enclosure type 2 |
|---|
| Position Indication | refl ective visual indicator (snap-on) |
|---|
| Feedback Output U | 2 to 10VDC, 0.5mA max |
|---|
| Ambient temperature | -22�F to +122�F [-30�C to +50�C] |
|---|
| Humidity | 5 to 95% RH non-condensing (EN 60730-1) |
|---|
| Running Time | normal operation |
|---|
| Direction of Rotation | reversible with switch |
|---|
| Bridge Time | 0 second delay before fail-safe activates |
|---|
| Storage temperature | -40�F to +176�F [-40�C to +80�C] |
|---|
| Power consumption | 11W (3W) |
|---|
| Fail-Safe Position | adjustable with dial, 0 to 1 in 10� increments |
|---|
| Operation range Y | 2 to 10 VDC, 4 to 20mA |
|---|
| Agency list | cULus acc. to UL 60730-1A/-2-14
CAN/CSA E60730-1:02
CE acc. to 2004/108/EC and 2006/95/EC |
|---|
| Initial charge | 9 to 15 seconds |
|---|
| Operation | The NKQ..24-SR actuator provides 95� of rotation and a visual indicator
shows the position of the actuator. When reaching the damper or actuator
end position the actuator automatically stops. The gear can be manually
disengaged by pressing the black button located on the actuator cover. The
NKQ..24-SR actuators use a brushless DC motor, which is controlled by an
Application Specifi c Integrated Circuit (ASIC). The ASIC monitors and controls
the actuators rotation and provides a digital rotation sensing (DRS) function
to prevent damage to the actuator in a stall condition. Power consumption is
reduced in a holding mode. The actuator is electronically protected against
overload. The anti-rotation strap supplied with the actuator will prevent lateral
movement. Add-on auxiliary switches or feedback potentiometers are easily
fastened directly onto the actuator body for signaling and switching functions. |
|---|
| Typical Specification | Proportional control damper actuators shall be electronic direct-coupled type,
which require no crank arm and linkage and be capable of direct mounting to
shaft up to 1.05" diameter. Actuators must provide proportional damper control
response to a 2 to 10 VDC or, with the addition of a 500� 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. Run time shall be constant and independent of torque. 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. |
|---|
Product Family
All orders are shipped same-day if the order is received by 1:00 PM Central Time. We ship worldwide.
UPS Hoilday Delivery Schedule
For more infomation about Returns visit Returns
For more informatrion about Warranty visit Warranty page.
You can also find answers to some common questions on our FAQ page
Reviews
Not reviewed yet, be the first to write one!
Add Review
|