DAMPER ACTUATORS

Beck's Unique Design Incorporates Simplicity, Flexibility, Reliability, and Performance

Not only are Beck drives designed to eliminate the shortcomings of other actuators, the many unique design features make them easy to install, easy to operate, reliable, maintenance-free and durable. The design also results in unbeatable control performance that remains consistent over time and with changing conditions.
 

Beck control drives are equipped with field-proven electronics that provide excellent position control in response to modulating control signals. This maximizes control loop performance by ensuring that the damper or valve responds exactly as the control loop requires.

The Beck Digital Control Module (DCM) resides within the drive and provides unparalleled position control. The standard DCM-L makes calibration and routine configuration changes a simple pushbutton operation, while providing advanced features such as stall protection and diagnostics.

The alternate DCM-H version offers a HART® interface, which allows HART® users even greater flexibility and diagnostic capabilities. Calibration, configuration, detailed process and drive diagnostics, even an optional live torque measurement can be accessed through a 275 Handheld Communicator or other HART® capable device.

Beck drives can alternatively be equipped with analog control and can be matched to virtually any process control signal. Multi-position and open/close control are also available.

Beck's Contactless Position Sensor (CPS) also resides within the drive, and provides reliable internal position feedback to the DCM for position control. The DCM also uses the sensor signal to source a 4-20 mA external position signal for remote monitoring of drive position. Unlike typical position sensors, the CPS does not wear due to its contactless design.

Beck continues to offer electronics that accept a wide range of control signals and provide several feedback options.
 

Beck's durable gear train maintains accurate, consistent positioning even under the demanding conditions of an active control loop.
Gear train features include:

• Efficient, all spur gear construction using only heat-treated alloy steels and ductile iron.
   
• Wide face gears that virtually eliminate wear induced backlash and positioning inaccuracies.
   
• Integral Self-Locking Mechanism (SLM) holds up to 200% of the rated load with the motor de-energized.
   
• Virtually no lubrication maintenance required and no mounting orientation restrictions on most models.

The Beck motor design makes the precise, reliable performance of the drives possible. This no burnout motor ensures that the drive is available 100% of the time. There are no duty cycle limitations typical of most electric actuators, so the drive performs as the loop requires rather than the loop performing as the actuator requires.
The Beck motor:

• Reaches full speed and torque in milliseconds-eliminating dead time.
• Stops instantaneously-eliminating coast and overshoot.
• Provides extremely accurate, repeatable positioning with no required maintenance.
• Draws very low current (0.16 to 3.0 A in most applications) permitting easy integration with UPS systems.

And...

• Never overheats or burns-out; even under demanding modulating or stalled conditions.

Tested in an active modulating loop, conventional motors rose rapidly in temperature, tripping thermal overload devices and becoming unavailable for extended time intervals. Only the Beck motor remained stable for continuous operation.

All Beck drives are built with local positioning capabilities. An electric Handswitch allows electrical local operation of the drive, while a convenient Handwheel, or Handcrank on some high torque drives, allows manual positioning of the drive output shaft without electric power.

The electric Handswitch allows the drive to be positioned locally and is very useful for the initial setup of the drive and linkage. It also serves as a diagnostic tool or a backup control device in the event the loop controller or demand signal malfunctions.

Even in the absence of power, and with full load applied, the drive output shaft can be manually positioned using the easy-to-turn, spoke-free Handwheel. No clutch mechanism is required and mechanical stops protect against manual overtravel.