Group 29 Linear Valve Actuators
A versatile, compact design, advanced HART®-capable electronics, hazardous location ratings, and Beck reliability all highlight the new Group 29 linear valve actuator.
Beck’s all-new Group 29 linear valve actuator improves upon the time-honored Group 14 product line. It is designed to provide precise, reliable control of all types of modulating globe valves. The Group 29 linear valve actuator offers the excellent performance and maintenance-free design typical of all Beck drives, as well as the flexibility and advanced features provided by microprocessor-based electronics.
Ideally suited for process control applications in even the harshest environments, the Group 29 linear valve actuator handles valve thrust requirements up to 6,100 lbs. and is easily mounted on most valves. A ball screw design along with an advanced drive control algorithm and the traditional Beck motor design ensure repeatable modulation as precise as 0.1% of span. A new, lighter, more compact design makes installation simple, while the rugged, weatherproof body rated for hazardous locations ensures safe operation anywhere in a plant environment.
General Specification
| Drive Power Options (all Group 29 models) | 120 Vac, single-phase, 50 or 60 Hz 240 Vac, single-phase, 50 or 60 Hz |
| Weight (including yoke) | 29-100 - Approximately 94 lbs. Approximately 43kg 29-250 - Approximately 145 lbs. Approximately 66kg 29-600 - Approximately 181 lbs. Approximately 82kg |
| 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° typical |
| 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, 1-5 V dc |
| 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 115% 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 and two Form A, all rated for 1 A, 250 V ac |
| Customer Wiring | Terminals accommodate up to 12 AWG (3.31 mm2) |
| 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 |
