Description
Overview
As a highly versatile multi-turn electric actuator, the BD/BDM05-C8 series from Bonray combines intelligent control capabilities with robust mechanical engineering to deliver precise and reliable valve automation. Specifically, we design this actuator to meet the demanding requirements of modern industrial processes, featuring a high-resolution dot-matrix LCD display that shows real-time operating data, including torque output, valve position, and system alarms. In addition, the actuator features a non-invasive configuration method, allowing operators to adjust settings and perform diagnostics using a magnetic knob or infrared setter without removing the electrical cover. As a result, this approach preserves the enclosure’s integrity and enhances reliability in harsh environments. Moreover, the BD/BDM05-C8 supports a wide array of control modes—from local field control to remote switching, analog (4-20mA), and various fieldbus protocols. Finally, with protection ratings reaching IP68 and certified explosion-proof options, this multi-turn electric actuator provides a dependable solution for applications in power generation, oil and gas, chemical processing, water treatment, and many other industries.
Which control options does the BD/BDM05-C8 Multi-turn Actuator support?
We offer multiple control methods. You can use local control via the magnetic knob or infrared setter. For remote operations, the actuator accepts dry contact signals, 4-20mA analog input, and fieldbus protocols such as Profibus-DP, Modbus, DeviceNet, FF, and Hart. An ESD override function ensures safe operation during emergencies.
Features
- Non-Invasive Operation: The magnetic knob and infrared setter enable full configuration and status checks without removing the electrical cover, preserving the IP68 seal and preventing dust or moisture ingress.
Non-intrusive Design - High-Resolution Dot-Matrix Display: A clear LCD screen shows torque values, valve position, and alarm messages in Chinese or English, with LED indicators for open and closed limits.
- Flexible Control Interfaces: We equip the actuator with support for remote switching, 4-20mA analog control, ESD override, and fieldbus cards (Profibus-DP, Modbus, DeviceNet, FF, Hart), allowing seamless integration into various control architectures.
- Comprehensive Protection Features: The actuator includes torque overload protection, motor overcurrent protection, automatic phase sequence correction, phase loss detection, motor thermal protection, and valve jam protection, ensuring safe and reliable operation.
- Absolute Position Sensing: Our patented BM18 multi-turn absolute encoder uses non-contact measurement to retain valve position data during power loss, delivering high accuracy and long service life.
- Continuous Torque Monitoring: The actuator measures and displays real-time torque output, enabling operators to set torque protection values (30%–100%) through the on-screen menu.
- Split-Type Option (BD/BDM-C8F): For applications involving high temperatures or severe vibration, we offer a split version that separates the electrical control unit from the actuator body, with a standard 10-meter cable for remote mounting.
Multi-turn Actuator BD05-C8 Data Sheet
| Single phase | ||||||
| Output Speed (rpm) | Rated Torque (N·m) | Motor Power (kW) | Capacitor (μF) | Locked Rotor Current (A) | Rated Current (A) | Weight (kg) |
| 16 | 45 | 0.20 | 14 | 3.1 | 1.2 | 21 |
| 24 | 35 | 0.25 | 20 | 3.2 | 1.46 | |
| 36 | 25 | 0.25 | 20 | 3.2 | 1.46 | |
| Three phase | |||||
| Output Speed (rpm) | Rated Torque (N·m) | Motor Power (kW) | Locked Rotor Current (A) | Rated Current (A) | Weight (kg) |
| 12 | 50 | 0.08 | 1.74 | 0.33 | 21 |
| 24 | 50 | 0.08 | 1.74 | 0.33 | |
| 36 | 35 | 0.08 | 1.74 | 0.33 | |
| 48 | 35 | 0.22 | 4.25 | 1 | |
| 72 | 35 | 0.22 | 4.25 | 1 | |
| 96 | 35 | 0.28 | 6.5 | 1.27 | |
Specifications
| Parameter | Details |
| Power Supply | Three-phase: 380Vac ±10% 50Hz±2% (400V, 415V, 440V optional); Single-phase: 220Vac ±10% 50Hz±2% (110V, 115V, 208V, 230V optional) |
| Output Torque | 50 N·m to 3,500 N·m (up to 300,000 N·m when paired with a gearbox) |
| Output Speed | 12 rpm to 144 rpm (depending on model and phase configuration) |
| Control Signals | 4-20mA analog, dry contact, DC24V/AC220V pulse/level signals, fieldbus (Profibus-DP, Modbus, DeviceNet, FF, Hart) |
| Feedback Signals | 4-20mA analog position feedback, up to 4 configurable output relay contacts |
| Ambient Temperature | -30°C to +70°C |
| Protection Class | IP68 (2 meters underwater for 48 hours) |
| Explosion-Proof Options | Ex db IIC T4 Gb (gas) / Ex tb IIIC T130°C Db (dust) |
| Mounting Interface | ISO 5210:2017 (GB/T12222-2023) and JB2920-81 |
| Enclosure Material | Lightweight aluminum alloy with double-seal design |
Related Product ：BD/BDM-C8F Split-Type Multi-turn Actuator
BD/BDM-C8F Split-Type Multi-turn Intelligent Electric Actuator – For installations where extreme conditions challenge standard actuators, we offer the BD/BDM-C8F split-type version. This variant separates the electrical control components into an independent controller, which we mount remotely from the actuator body. A 10-meter cable (extendable upon request) carries control signals and power between the units. This design suits high-temperature environments, areas with severe vibration, or locations where physical space restricts access. The split version retains all the intelligent features of the standard BD/BDM-C8 series, including non-invasive setup, absolute position encoding, fieldbus compatibility, and comprehensive protection functions, ensuring reliable valve control even in the most demanding applications.