Process Control Valves... 

Servo Electric Damper

Application

Servo electric damper actuators for low‐NOx (nitrous oxide) burners in plant environments

Customer

Boiler manufacturers and operators

The Challenge

To meet new clean air regulations, many plants rely upon low‐NOx (nitrous oxide) burners within their boilers.  These burners rely upon accurate control of the combustion air to achieve the required NOx reduction.  Many plants are looking at advanced control options to improve the control of this combustion air, but to be successful, precise position control of the multiple dampers is needed

Damper system 3

The Solution

In order to get the best possible damper control, utility engineers are now replacing existing windbox dampers with Exlar electric servo actuators. Each actuator, when supplied with Exlar’s all‐ digital SV positioner, will respond to command signal changes in less than 5 m/sec. The speed of the response combined with the dynamic capability of the all‐electric actuator delivers accuracy and repeatability much greater than pneumatic or induction motor actuators.

Damper system 4

Exlar’s patented linear actuator is based on a unique design for integrating a robust and efficient threaded roller mechanism into the interior of a high power density, high performance brushless servo motor. Combined with a precise position feedback mechanism, the result is an all‐electric actuator which is extremely compact, yet delivers superior performance for your damper control needs.

One of Exlar’s unique differences from other electric actuators is in the roller screw’s design for transmitting forces. The large number of mechanical interfaces combined with their shape create a high contact surface area that allows high load carrying capabilities and high stiffness.

Exlar’s other unique difference is its high performance brushless servo motor which yields both speed and control unachievable by conventional motors.

Improved Product Output

High Speed

Long Life

High Acceleration

Results

Precise Feedback Control.

The digital SV Series Positioners are designed specifically for use with Exlar rotary and linear actuators to control valves and dampers in process control applications. Positioning of the damper with the SV Series can be controlled proportionally in response to an analog input signal allowing for simple control by DCS or PLC systems. Resolver feedback from the servo actuator offers reliable, robust, absolute feedback even in extreme temperature environments. The SV Series Positioner also offers the flexibility of operating with auxiliary linear feedback devices offering full absolute position capability.

Actuator Characteristics

  • 2, 3, 4, 5 and 7 inch frame sizes
  • 3 to 18 inch stroke lengths
  • Up to 12,000 lb max thrust capability
  • Up to 40 inch per second linear speeds
  • IP65 sealing (NEMA 4)
  • Front flange, rear clevis, trunnion, side, double side or extended tie rods mounting options

New Olsen Actuators 2021 Company Video!

We are delighted to release our new company video! Our product range continues...
Read Full Story

New Product Launch - Atom Servo Drive!

Introducing the ATOM servo drive from our partners at ESI Motion... Ultra-Low...
Read Full Story

Olsen Actuators obtains a TM!

We are delighted to receive confirmation of our company logo's registered TM...
Read Full Story

New Product Range - ESI Motion!

Olsen are delighted to introduce a new range of power electronics - fantastic...
Read Full Story

Piers Olsen - CEO Global Magazine Interview

Our very own Managing Director has been featured in the winner's edition of...
Read Full Story

NDI - Meet the buyer June 2021

Olsen attended a really positive Meet the Buyer event to discuss defence...
Read Full Story

RailLive 2021

Olsen's delegation to RailLive 2021 was treated to a sweltering day out in the...
Read Full Story

Olsen's Mental Health First Aiders

The pandemic has brought into sharp focus the importance of mental health in...
Read Full Story

MAKE UK Land Systems Conference

Olsen were delighted to be attend the MAKE UK Land Systems Conference....
Read Full Story