Group 22 Rotary Actuators
Group 22 rotary actuators offer excellent performance in a maintenance-free design, plus the added flexibility and features provided by microprocessor-based electronics. Ideally suited for large fan damper applications, these rotary actuators are capable of modulating both static and dynamic loads up to 10850 nm (8,000 lb-ft) of torque, even in the harshest environments. Installation is simple due to a compact, weatherproof design which houses all the components, including the advanced control module.
For information on specific models, please click on the following photographs
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Model 22-309
3000 lb-ft
| Model 22-409
4000 lb-ft
| Model 22-809
8000 lb-ft |
General Specifications
| Operating Conditions | –40° to 85° C. (–40° to 185° F.)
0 to 99% relative humidity |
| Demand Input Signal Range | 4–20 mA, 1–5 V dc |
| Minimum Step | 0.1° typical |
| Linearity | ±1% of span, max. independent error |
| Hysteresis | 0.25% of span at any point |
Demand Input Signal
Characterization | Linear: Drive output shaft moves proportionally to the input signal.
Square: Drive output shaft moves proportionally to the square of the input signal. |
Position Feedback
Signal | Demand input and position Feedback signals are isolated from ground and the ac power line. Signal buffering provides 24 Vdc isolation between the Demand and Feedback signals. |
| Overtorque Protection | If the output torque of the drive exceeds 115% of the drive rating, the motor will shut off (feature can be enabled/disabled). |
Action on Loss of
Input Signal (Power
On) | Stays in place or runs to any preset position (configurable). |
| Stall Protection | If the motor tries to run in one direction for more than 300 seconds (configurable from 30 to 300 seconds), the motor will shut off. |
Over-travel Protection
Switches | Two SPDT, one for CW and one for CCW limit of output shaft travel. Standard switch setting allows for 100° of travel. |
Non-dedicated
Switches (Field
Adjustable) | Two SPDT, rated for 1 A, 250 Vac |
| Handswitch | Permits local electrical operation, independent of Demand input signal. |
Handwheel (and
Handcrank on the
model 22-809) | Provides manual operation without electrical power. |
| Enclosure | Precision-machined aluminum alloy castings, painted with corrosion-resistant polyurethane paint, provide a rugged, dust-tight, weatherproof enclosure. |
| Mounting Orientation | Upright, as depicted in
outline dimension drawings |
| Customer Wiring | Terminals accommodate up to
12 AWG (3.31 mm2) |
| Motor | Does not coast or overshoot and will not overheat, even under continuous modulation |
| Gear Train | High efficiency, precision-cut, heat-treated alloy steel and ductile iron spur gears enclosed in and permanently lubricated by a grease-filled housing are designed for long life and minimal wear. |
| Mechanical Stops | Prevent over-travel during automatic ormanual operation |
| Standards*** | cULus Listed
CE Compliant |
Mechanical Features
Drive Train:
Durable and Efficient
Beck’s durable gear train maintains accurate, consistent control element positioning even under the demanding conditions of an active control loop.
- Gear trains employ a unique, all spur gear construction of heat-treated alloy steels and ductile iron.
- Efficient, wide-face spur gearing virtually eliminates wear-induced backlash and positioning inaccuracies.
- Durable design provides up to 4 days of protection against intermittent or extended accidental stalls.
- Integral self-locking mechanism ensures that drives hold a load with the motor de-energized.
Manual Handwheel:
Convenient Manual Control Without Declutch
An easy-to-turn, spoke-free Handwheel is incorporated into the Group 22 design to allow manual operation during installation or power outages.
- Move dampers to any position smoothly and easily without power, even under full load conditions.
- Mechanical stops in housing prevent manual overtravel.
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CPS-4 Compartment |
Housing:
Superior Protection with Convenient Access to Components
Beck drives feature a cast aluminum body with individual compartments to protect components from moisture and dirt, and allow easy access for installation and calibration.
- Precision-machined aluminum alloy castings with corrosion resistant poly-urethane paint provide a rugged, dust-tight, weatherproof enclosure.
- Individual compartments protect all major components: Motor, Digital Control Module, Contactless Position Sensor, gear train, and installation wiring terminal board.
- Each compartment can be accessed without exposing other components.
Electrical Features
Electric Handswitch:
Time-Saving Local Operation Group 22 rotary actuators allow dampers or valves to be operated at their individual locations with the built-in electric Handswitch. This saves time during installation and troubleshooting, allowing on-line adjustments to be made quickly and easily by bypassing the electronics in the drive and control system. The Handswitch also serves as an electrical backup in the event of control system failure. |  |
Auxiliary and Over-travel Limit Switches: All Group 22 rotary actuators include two non-dedicated SPDT switches, which are cam-actuated directly by the output shaft. Wiring connections are provided in the drive terminal compartment, allowing for easy access. The switch trip points are easily adjusted in the field to operate at any point in the drive travel rotation. |  |
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Beck Drive Motor:
Precise, Reliable Control
The Beck Group 22 rotary actuator motor design allows for precise control, with low current draw and no duty-cycle limitations. The drive's onboard control electronics directly feed the motor windings, thus eliminating external motor starters or remote mounted electronics. In addition, the motor does not coast or overshoot and will not overheat - even under continuous modulation. |  |