Description
1. Overview of On-Off Electric Actuator
VTON on-off electric actuators provide efficient and reliable control for rotary valves and similar devices. Designed for remote opening and closing, these actuators are widely used in industries such as petrochemicals, water treatment, shipbuilding, and power generation. They support seamless integration with automated systems, offering precise position feedback and robust performance under challenging conditions.
Applications:
- Petrochemical processing
- Water and wastewater treatment
- Power generation
- Shipbuilding and HVAC systems
- Pulp and paper industries
2. Technical Parameters
- Maximum Output Torque: 200-400Nm
- Action Time (90°): 30 seconds
- Motor Type: Squirrel cage asynchronous motor
- Power Supply:
- Single-phase: 110/220V AC
- Three-phase: 380/440V AC (50/60Hz, ±10%)
- Control Signals: Input/output 4-20mA
- Limit Switches:
- Standard: 2 x ON/OFF SPDT (250V AC, 10A)
- Auxiliary: 2 x ON/OFF SPDT (250V AC, 10A)
- Angle of Travel: 90° ± 10° (Optional: 180° or 270°)
- Overheat Protection: Built-in, activates at 120°C ± 5°C, resets at 97°C ± 5°C
- Manual Operation: Mechanical handwheel
- Self-Locking Device: Worm gear mechanism
- Environmental Temperature: -25°C to +70°C (optional: -30°C, -40°C, -60°C)
- Ingress Protection: IP67 (Optional: IP68)
3. Key Features
- Durable Construction: Aluminum alloy housing with anodized coating and polyester powder finish for excellent corrosion resistance.
- Precision Control: Supports remote valve operation with accurate position feedback.
- Advanced Safety Features:
- Built-in overheat protection prevents motor damage.
- Dual mechanical and electronic limit switches ensure reliable operation.
- Self-Locking Mechanism: Worm gear drive ensures stability and prevents reverse movement.
- Flexible Mounting Options: ISO5211/DIN3337 compliant base allows vertical or horizontal installation.
- Moisture Protection: Equipped with a 30W anti-condensation heater to prevent internal humidity buildup.
- User-Friendly Design:
- Manual handwheel for emergency operation
- Clear position indicator with a convex lens for better visibility
4. Selection Guidelines
When choosing an on-off electric actuator:
- Assess the torque requirements of the valve and add a safety margin based on the operating medium.
- Match the actuator’s power supply, control signals, and environmental tolerances to your application.
- Opt for IP68-rated models for high moisture or submerged environments.
