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SERIES SURE 24
SurepowrTM Type SR
300 Inch Pound Torque Output
Description
The Surepowr 24 advances the
technology of spring return actuators. This model has a unique gear
clutch arrangement which uncouples the motor during spring return
operation. This optimizes the actuating speed and force of the spring.
The Surepowr 24 is ideally suited for smaller ball, butterfly, plug and
cylinder valves, as well as air flow damper and similar applications.
Full travel models are available with either clockwise or
counterclockwise power spring return. Several motor drive/power spring
combinations and NEMA 4 or NEMA 7 enclosures are available to satisfy
most application requirements. CSA is also available.
Applications
 | Automated and
computer-controlled systems
| Ball, butterfly, plug and
cylinder valves
| Dampers, switches, safety and
fire control equipment
| Use in combination with optional
RCS Digi-Line, solid-state controllers to perform an almost
limitless range of precision control functions. |
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Features
| Powered by a rugged high-torque, integral, 115 Vac 60 Hz or 220
Vac 50 Hz single phase, reversible motor
| Precision-cut gears and shafts are heat treated, high alloy steel.
| Unique adjustment plates permit fast, accurate setting of travel
limit switches. Switch activating cams are independently adjustable
for maximum setting flexibility and accuracy.
| Mechanical, visual position indicators
| Built-in motor overload protector
| Permanent lubrication
| Gear train withstands stall torque.
| Operates in any position.
| Accesslble, early marked integral terminal strip assures fast,
easy wiring.
| Electroless nickel plated output shafts provide maximum corrosion
protection.
| Designed for intermittent operation as typified by applications
which require emergency operation to a pre-determined position |
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Optional Features
| Special shaft configurations
| Intergral potentiometer. 1000 and/or 15000 Ohms, 2 Watts, 1%
linearity. Other resistances available.
| Auxiliary function switches
| Two-wire control or momentary contact actuation
| Heaters, thermostats, breathers, drains and special corrosion
| Custom designs for varying requirements
| NEMA 7 for Class I, Divisions 1 and 2, Groups C and D. Class II,
Division 1 and 2, Groups E, F, and G; CSA also available. |
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Specifications
Ambient Temperature: -40 deg.F to + 150deg.F standard.
Optional heaters are recommended below 32deg.F ambient.
Lubrication: High temperature gear grease and self-lubricating
bearings
Mounting: Universal
Enclosures: NEMA-4 standard; NEMA-7 class 1, Groups C and D,
class 11 Groups E, F and G optionally available. CSA also available.
Power: 120/220 Vac 60/50 Hz 1 phase
Limit Switches: 15 A at 125 and 220 Vac, restive load
Conduit Entry: 1/2" NPT Provided
End Torque Rating: 300 in-lbs 134 N-m) minimum
Shaft Rotation: CW or CCW spring return
Duty Cycle: 25% at 100 deg.F. ambient temperature
Shaft Speed: motor mode - 90 deg. in 10-12 seconds
Power Failure: (spring return) 90deg. in l l/2 to 2 seconds
Motor Current; LR (locked rotor): 1.05 A at 120 Vac .65 A at 220
Vac
Solenoid Brake Current Draw: 0.08A at 120Vac
Notes:
1. Direction of rotation is based on viewing actuator from top.
2. Drawing shows actuator output shah in clockwise position.
3. Standard unit has spring drive in clockwise direction.
4. Optional unit has spring drive in counter clockwise direction.
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