1. Description
DCL explosion proof electric actuators are widely used in potential environment of flammable and explosive, such as petroleum, chemical, power plant, liquid gas, winery and metallurgy etc. To ensure workers are away from danger, explosion proof is a must. For different industries, zones and divisions, different explosion proof grade is required.
Actuators with ExdIICT4 and Group C, D T4 grade can be used in 90% explosive gas atmospheres except for colliery. The maximum surface temperature of actuator is less than 135℃ and 300.6F during severe duty applications. Over 10 years of safety operations in China, now all series anti explosion actuators have passed test process of CSA and been certified in 2022.
2. Specification
| Type | Ex20E |
| Power | AC110V/AC220V |
| Output Torque | 200Nm |
| Acting Time | 30S |
| Turning Angle | 0-90° |
| Motor Power | 40W |
| Rated Current | 0.63/0.35A |
| Total Weight | 5.5kg |
| Input Signal | 4-20mADC,1-5VDC,2-10VDC |
| Output Singal | 4-20mADC |
| Basic Error | not more than ±1% |
| Reciprocating Error | not more than 1% |
| Dead Space | 0.5%-5.0% adjustable |
| Damping Characteristic | 0 times |
| Repeating Error in Actuator | ≤1% |
| Insulating Resistance | 100MΩ/500VDC |
| Withstand Voltage Class | 1500VAC 1minutes |
| Protection Class | IP67 |
| Explosive-proof grade | Exd II CT4Gb |
| Installation Angle | 360°at any angle |
| Electric Interface | 2-M20*1.5 explosion-proof plug,clients should install corresponding explosion-proof cable connector when using according to the cable selected. |
| Ambient Temperature | -20℃~+60℃ |
| Optional Function | Over-torque protector/Dehumidify Heater/Passive contact switch |
| Remark | Any other input or output signal needed, please specified in purchase order. |
Control Circuit of Type E
The Servo-controller is located inside of the actuator. It receives command of the central control system and drives valve to proper opening position according to varying conditions of variables(flow,pressure,temperature,fluid level) in the pipe.
Adopt character of service of S4 intermittent type, working frequency reaches 1200 times/hour.
Servo-Controller
The unique circuit design, imported technical grade electronic parts and components and modern making technology of circuit board of the DCL ensures high quality and reliability of the servo-controller. The circuit board with resin plastic package makes shock and humidity resistance better.the unique electronic brake function makes actuator dead-beat when position is fixed, the period of damping character is zero times(standard: Less than 3.5 times)
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200Nm 2~10VDC 40W Modulating Explosion proof valve actuator Images
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