Explosion-proof series electric actuator
- Explosion protection class Exd II CT4Gb
- Protection class IP68
- For use in potentially explosive environments
- Matching Angle Stroke Valve
Adaptive Valve
Partial rotation
damper
0~90° | 0~360°
Torque/Time
20~600Nm
4S~60S
Type of control
switching type
regulating type
Supply Voltage
DC24V
AC24V
AC110V
AC220V
AC380V
Input/Output Signal
4~20mA
0~10V
Level | Contacts
Modbus-RTU | CAN | Ethernet
optional
Over-torque protection
Power failure reset
Self-heating dehumidification
self-diagnosis
Explosion-proof certificate
Adjustment method
regulating type
The servo controller is placed inside the actuator and receives commands from the central control system to drive the valve to the appropriate opening position based on changes in the controlled variables in the pipeline (flow, pressure, temperature, level).
Adopting S4 intermittent type working system, the working frequency is up to 1200 times per hour.
switching type
A, B, D, G, H control circuits
Switching models have only fully open and fully closed limit positions; intermediate positions can be preset if desired (models B, D, G, and H). Upon receipt of the appropriate command, the actuator will drive the valve to the fully open, or fully closed, or intermediate positions.
The S2 short-time type working system is adopted, and the continuous running time does not exceed 15 minutes.
feedback-based
C, D, F type control circuits
In the process of driving the valve, the actuator feeds back the valve position signal to the central control system at the same time. types C and D feed back the resistive valve position signal, and type F feeds back the analog valve position signal.
The S2 short-time type working system is adopted, and the continuous running time does not exceed 15 minutes.
Functional Features
Servo Control Modules
DCL's unique circuit design, imported industrial-grade electronic components, and modern circuit board manufacturing process ensure the high quality and reliability of the servo controller. The circuit board is resin molded for better vibration and moisture resistance. Unique electronic braking function, so that the actuator positioning without oscillation, damping characteristics of 0 cycles (standard regulations not more than 3.5 cycles)".
Micro-adjustment of electrical limit travel
With DCL's unique patented design, the actuator's open and closed electrical limit travel can be easily adjusted with only a hexagonal wrench. At the same time, the unique micro-adjustment function makes it possible to adjust the electrical limit travel more accurately.
Patent No.: ZL 201020214725.8
electrical machinery
Due to the working characteristics of the valve, the actuator is required to have the ability to start at full load in the opening, closing and any intermediate position of the valve, which requires the motor of the actuator to have a high starting torque. This requires the actuator motor to have a high starting torque. At the same time, due to the need for version (opening) adjustment, the motor must have a small rotating inertia, and DCL series electric actuator motors have been specially designed to meet these requirements.
When the actuator is blocked, the motor temperature will rise rapidly. When the motor temperature reaches 1252, a PTC thermal protector embedded in the motor windings cuts the circuit to protect the motor and control system. When the motor temperature drops to 90-105W, the circuit will be turned back on.
Electrical and mechanical limits
Electrical Travel Limit Function: When the actuator reaches the fully open or fully closed limit position or the set intermediate position, the built-in electrical limit switch will cut off the circuit to protect the actuator.
Output shaft mechanical limit function: In case of electrical travel limit failure, the output shaft of the actuator will be locked by a mechanical limit device, thus protecting the valve from damage.
The diagram shows the positional relationship between the electrical and mechanical limits.
Optional Features
Over-torque protection
When the valve is jammed during operation (intermediate position) due to impurities, foreign matter or other reasons in the pipeline, the output torque of the actuator will increase rapidly, and when it reaches the set value (tripping torque), the torque switch will break the circuit, thus protecting the valve and the actuator from damage.
Heating and dehumidifying
The DCL series actuators can be equipped with a PTC electronic heating element in the electrical chamber for use in humid locations with a large temperature difference between day and night to prevent damage to the electrical components due to condensation. The heater is in continuous operation, so it is electrically charged, even when the actuator is not in operation.
control circuit
Selection table
| 型号 | rotation angle | Torque/Time | Type of control | Supply Voltage | Input/Output Signal | Optional Features |
|---|---|---|---|---|---|---|
| DCL-Ex05 | 0-360°可调 | 50Nm/20S selectable 20Nm/4S 30Nm/10S 50Nm/60S | switching type regulating type | DC24V AC24V AC110V AC220V AC380V | 4~20mA 0~10V Level | Contacts Modbus-RTU | CAN | Ethernet | Over-torque protection Power failure reset Self-heating dehumidification 自诊断和数据记录 |
| DCL-Ex10 | 0-90°可调 | 100Nm/30S selectable 50Nm/15S 100Nm/60S | switching type regulating type | DC24V AC24V AC110V AC220V AC380V | 4~20mA 0~10V Level | Contacts Modbus-RTU | CAN | Ethernet | Over-torque protection Power failure reset Self-heating dehumidification 自诊断和数据记录 |
| DCL-Ex20 | 0-90°可调 | 200Nm/30S selectable 100Nm/15S 200Nm/60S | switching type regulating type | DC24V AC110V AC220V AC380V | 4~20mA 0~10V Level | Contacts Modbus-RTU | CAN | Ethernet | Over-torque protection Power failure reset Self-heating dehumidification 自诊断和数据记录 |
| DCL-Ex40 | 0-90°可调 | 400Nm/30S selectable 200Nm/15S 400Nm/60S | switching type regulating type | DC24V AC110V AC220V AC380V | 4~20mA 0~10V Level | Contacts Modbus-RTU | CAN | Ethernet | Over-torque protection Power failure reset Self-heating dehumidification 自诊断和数据记录 |
| DCL-Ex60 | 0-90°可调 | 600Nm/45S selectable | switching type regulating type | DC24V AC110V AC220V AC380V | 4~20mA 0~10V Level | Contacts Modbus-RTU | CAN | Ethernet | Over-torque protection Power failure reset Self-heating dehumidification 自诊断和数据记录 |
Valve Selection Recommendation Table
Note: The matching data of actuator and valve in the table is for reference only, the specific torque value provided by the valve manufacturer shall prevail.
Because of the many types of valves, even if the same specifications of the valve, due to the manufacturer's manufacturing process, quality level, structural form, the valve body material is different, the torque value is different. And in actual use, often because of the system pressure fluctuations, media type, site environment, 'operating characteristics of different factors will also lead to the valve opening torque has a great change. In order to ensure the stable and reliable operation of the actuator, it is necessary to leave sufficient margin in the selection. It is recommended to leave a margin coefficient of times in the selection, i.e.: margin coefficient = actuator output torque / valve pressure test torque N1.1 ~ 1.3 times.
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