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| Group 42 Long Stroke Linear Actuators A versatile, compact design, advanced electronics, and Beck reliability all highlight the new Group 42 linear actuator.
Beck’s all-new Group 42 actuators are designed to meet the actuation needs of long stroke linear applications. Typical applications include burner registers and OFA port dampers, but they can be used on any application requiring up to 18 inches of linear stroke. Like all Beck drives, the Group 42 is designed for reliability and simple installation, no duty cycle limitations, excellent performance, and little or no required maintenance. The Group 42 is available with modulating analog control or direct AC control. Ideally suited for harsh industrial environments, the Group 42 handles long stroke applications requiring up to 4450n of thrust. The design employs a highly efficient ball screw coupled with a time-proven Beck motor and offers consistent, repeatable positioning as precise as 0.1% of span. Like all Beck drives, the Group 42 incorporates a heavy-duty, weatherproof, cast aluminum body. Model 42-109
| Model 42-107 / 42-105 / 42-103
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General Specifications (Model 42-109)Output Thrust and Timing (all models) Thrust n (lbs.) | Stroke Length (mm) | 4450 (1000) | 127mm to 457mm |
Drive Power Options 120 Vac, single-phase, 50 or 60 Hz, 1.5A | 240 Vac, single-phase, 50 or 60 Hz, 0.75A |
Weight Travel
Range | Approximate Weight kg
(lbs) (for 120 Vac
operation) | Approximate Weight kg
(lbs) (for 240 Vac
operation) | 127mm to 203mm | 34 (75) | 38 (84) | 178mm to 305mm | 35 (77) | 39 (86) | 279mm to 457mm | 36 (80) | 40 (89) |
Additional Specifications | Operating Conditions | –40° to 85° C. (–40° to 185° F.)
0 to 99% relative humidity | | Communications Interface | HART© protocol and local pushbutton/LED panel and RS-232 serial commands | Demand Input Signal
Range | 4–20 mA, 1–5 V dc | | Minimum Step | 0.1° of span | | 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.
Custom: 20 segment configurable curve fit | Position Feedback
Signal | 4-20 mA | | Isolation | Demand input and position Feedback signals are isolated from ground and the ac power line. Signal buffering provides 24 V dc isolation between the Demand and Feedback signals. | Action on Loss of
Power | Output shaft stays in last position | | Action on Loss of Input Signal (Power on) | Stay in place or runs to any preset position (configurable) | | Over-thrust Protection | If the output thrust of the drive exceeds 150% of the drive rating, the motor will shut off (feature can be enabled / disabled). | | 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 Form C (Retract and Extend) provide over-travel protection | Auxiliary Switches
(Field Adjustable) | Two Form C, rated for 1 A, 250 V ac | | Handswitch | Permits local electrical operation, independent of Demand input signal. | | Handwheel | Provides manual operation without electrical power. | | Motor | 120 Vac, single-phase, no burnout, noncoasting. Capable of 60 starts per minute | | Enclosure | Precision-machined aluminum alloy castings, painted with corrosion-resistant polyurethane paint, to provide a rugged, dust-tight, weatherproof enclosure designed to meet NEMA 4X standards. | | Mounting Orientation | Can be mounted in any orientation |
Mechanical Features Drive Train:
The Group 42 drive train is
designed for high efficiency, consistent performance, and durability. The Group 42 drive train consists of spur gears coupled to a ball screw. This design improves performance and reliability and reduces maintenance requirements when compared to typical linear electric actuators.  Manual Operation:
Group 42 drive can be manually operated, without power, by a Handwheel directly connected to the drive motor shaft. This allows positioning of the driven load in the absence of AC power.  Clevis Mounting:
The Group 42 utilizes a clevis style mounting that is both rugged and simple to use. The clevis mounting provides the flexibility to easily adapt the drive to most applications. Electrical Features Auxiliary and Over-travel
Limit Switches:
Up to two optional non-dedicated Form C switches are available. These switches are cam-operated and easily adjusted in the field. Wiring connections are provided in the drive terminal compartment to allow easy access.  Beck Drive Motor:
Precise, Reliable Control
Like all Beck drives, the Group 42 utilizes a low current draw, continuous duty motor design. This motor ensures that the drive will not coast or overshoot and will not overheat, even under continuous modulation. The net result is consistent, repeatable positioning with no duty limitations.  Electric Handswitch:
Time-Saving Local Operation
Similar to all Beck drives, the Group 42 is equipped with an override manual Handswitch to aid in the setup and installation of the drive independent of external control signals. | |
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