Part-Turn Electric Actuators BJ40-Q1 efficiently serve medium-to-high torque quarter-turn valve control. Thanks to stable torque output, they drive large and medium quarter-turn valves smoothly. Additionally, they adopt a double-sealed structure for high-level environmental protection, effectively resisting moisture, dust, oil and other pollutants. During long-term operation, they protect internal electrical and mechanical parts reliably. With 400N·m rated torque, they keep consistent and steady rotating speed. Furthermore, they support both switching control and proportional regulation, adapting flexibly to diverse process control requirements in different scenarios.

In addition to stable performance, these actuators feature automatic phase sequence correction for easier wiring. Users can connect power cables freely without phase sequence errors or risks. Moreover, they are equipped with a real-time fault self-diagnosis system to ensure safe operation, sending clear alarm signals once abnormalities occur. This helps maintenance staff locate and solve problems quickly and accurately. Besides, they support non-intrusive setup and calibration without opening the cover. High-performance lubricating grease ensures smooth and quiet transmission, reducing wear and extending service life.

Finally, they use ISO5211 standard connection flanges for fast and universal installation, matching most quarter-turn valves without extra modification. They can also be equipped with bus communication modules for intelligent networking, realizing remote monitoring, data feedback and centralized control easily. Combining excellent reliability, high precision and strong adaptability, they perform steadily in harsh and heavy-duty conditions, making them highly suitable for industrial automatic control with strict performance demands.

Technical Parameters of Part-Turn Electric Actuators BJ40-Q1 Intelligent Series

• Power Supply: Three-phase: 380Vac ±10%, 50Hz ±2%; Single-phase: 220Vac ±10%, 50Hz ±2%. Optional power supply: AC220–660V, 50/60Hz (compatible with both three-phase three-wire and three-phase four-wire systems; special power requirements must be specified when ordering).
• Input Signal: DC4–20mA (for modulating type only); DC24V, AC220V, or dry contact.
• Output Signal: 4 field-configurable output contacts, 1 remote indicator output contact, and 1 fault alarm output contact.
• Output Contact Rating: 250Vac/5A
• Output Current Load Impedance: ≤750Ω
• Output Torque: Refer to Table 6
• Protection Rating: IP65 (IP67 optional)
• Insulation Class: Class F
• Ambient Temperature: -20℃ to +60℃ (optional range: -30℃ to +70℃)
• Relative Humidity: ≤95% (at 25℃)
• Duty Cycle: Short-time duty, 10 minutes
• Lubrication: High-performance grease
• Installation: Mounting flange complies with ISO5211:2017 (GB/T12223-2023) standard; non-standard flanges can be customized according to user requirements.
• Cable Entry: Two M25x1.5 cable entries, suitable for two cables with diameters of 13–18mm； Waterproof models are equipped with cable waterproof connectors.

  

BJ40‑Q1 employs a high‑performance absolute encoder, thus delivering accurate and stable position feedback. Furthermore, it can capture real‑time angular data with high precision, thereby guaranteeing precise control over valve position. In addition, it is equipped with a power‑off position memory function; consequently, it will not lose position data even in the event of a sudden power failure, and eliminates the need for repeated homing operations. Moreover, it boasts strong anti‑vibration and anti‑interference capabilities, allowing it to maintain stable detection performance in complex working environments with frequent vibration and temperature fluctuations. Ultimately, the absolute encoder ensures that the actuator achieves accurate and consistent valve position control during long‑term operation, which lays a solid foundation for stable and reliable system operation.

These actuators support a variety of optional fieldbus cards, thereby achieving diversified and stable communication functions. Furthermore, they can quickly access the upper central control system to realize remote control, data upload and fault query. In addition, the bus module features strong compatibility and reliable signal transmission, enabling it to adapt to different control systems and network environments. Moreover, it supports real-time data interaction and centralized management, which effectively meets the construction requirements of intelligent factories and enhances the integration and scalability of the entire control system. Ultimately, the application of fieldbus cards enables the actuator to better align with the development trend of industrial intelligence and digitalization.

BJ40-Q1 actuators are widely used in shipbuilding, papermaking, food processing, municipal engineering, light industry and other industrial fields. In addition, they can drive medium and large?sized quarter?turn valves stably and reliably. Furthermore, they feature excellent adaptability to environments with temperature changes and slight vibration, and they can maintain stable performance even during continuous long?term operation. Meanwhile, they provide safe and efficient control support for various automatic pipeline systems and key equipment. Therefore, with their outstanding stability and durability, they have become essential driving components in modern industrial automatic control systems.

Related Product：BD-IIC Multi-turn Basic Electric Actuator

The BD-IIC/BDM-IIC series represents a new generation of intelligent multi-turn electric actuators for industrial valve automation. It features a non-invasive design, so operators can configure parameters without opening the electrical cover. Meanwhile, the dot-matrix LCD display shows valve position, torque values, and alarm messages in real time across multiple languages.

In terms of control flexibility, this series supports local operation, remote switch control, remote analog control (4–20 mA), and fieldbus options like Profibus-DP and Modbus. It also offers ESD override and two-wire control for special applications. Furthermore, the absolute encoding position and torque sensors ensure accurate measurement without battery backup, while protection features like torque overload, phase loss, and motor overheating safeguard both the valve and the actuator.

Finally, the BD-IIC/BDM-IIC covers a torque range from 50 N·m to 3,000 N·m, and with optional gearboxes it can reach up to 300,000 N·m. For harsh conditions, the split-type version keeps the controller away from high temperature or vibration. Therefore, this product suits power plants, petrochemical facilities, water treatment, and explosive environments with Ex db IIC T4 Gb certification.