Energy storage type permanent magnet brushless DC speedcontrol electric actuator, which automatically switches on and off the built-in power supply in case of external power supply failure
Angular Stroke : 1600Nm-60000Nm
Straight Stroke: 16KN-60KN.
In industrial process control, if the external power supply is lost, ordinary electric actuators cannot function normally. To overcome this shortcoming, in 2000, Lokval was entrusted to develop a dual-power electric control device that automatically switches to its own backup power supply when power is lost.
The specific measure is to use super capacitors in parallel with the external power source and in series with the control circuit. When the priority external power supply is working normally, it also quickly charges the super capacitor for energy storage. In the event of an external power failure, the super capacitor, as a backup power source, automatically switches and releases the stored energy.
| Standard Configuration Technical Parameters | |
|---|---|
| Power Supply | 24 / 48 / 70 VDC 230 VAC Solar and Wind Energy |
| OLED Liquid Crystal Display | 4 Rows |
| Ambient Temperature | -40°C to +70°C |
| Ambient Humidity | 98% RH |
| Speed Adjustable Range | 400-8000 |
| Torque Adjustable Range | 10-150% (Not all models) |
| Explosion-proof Grade | Ex dⅡ C T5Gb |
| Performance Test Method | IEC62391-1 |
| Protection Grade | IP68 |
| Input | Digital Analog |
| Output | 4-20 mA ON-Off Dry Contact Wet Contact |
| Communication | ProfiBUS-DP ModBUS-RTU HART |
| Position Sensor | Absolute Position Encoder |
| Power-off Reset Response Time | 0-200 ms |
| Single Capacitance | 2.7 V (Capacity as Needed) |
| Capacitance Attenuation (Related to Ambient Temperature) | 10 Years, 10-20% (-30°C to +50°C) |
| Remote Control | Wired 4G Wireless Terminal |
| Control Precision | ±0.1% |
| Detection Precision | ±2.0% |
| Over-torque Protection Value | 100% (Can be Turned Off) |
| Over-temperature Protection Value | 130°C |
| Stroke Limit Protection | Mechanical / Electronic Double Protection |
| Shock Resistance | 600 Hz, 3-Axis, 6 g |
| Operating Temperature | -40°C to +70°C (Limit) 0°C to +25°C (Optimum) |
| Cycle Charge Life | Normal Temperature Cycle Charge More than 1,000,000 Times |
When choosing the actuators, customers should select suitable models based on information such as valve torque, working conditions, and valve size. It is recommended that when choosing an electric actuator model, 60% – 80% of the rated output torque of the actuator should be used as the working torque of the valve. If the application scenario is very important or the environment is complex, customers should provide design drawings and detailed parameters as much as possible for the company’s experts to review and recommend matching products.