When you install a DCL electric control valve with bus functionality on a pipeline, you can control a set of electric control valves through the bus (Modbus, CAN, Ethernet, Profibus) to achieve synchronized control of the valve cluster.
- The control system communicates with the actuator via a bus communication protocol, sending commands to control the valve position. The actuator drives the valve to the specified position based on the bus commands.
- If a bus error occurs, the actuator will drive the valve to fully open, fully closed, or maintain the valve position according to the user’s settings during the bus error.
- If the power supply to the actuator stops during valve operation, the actuator will stop, and the electric valve will remain in its current position.
Note: The above circuit diagram shows the basic functionality of a switch-type actuator (electric valve). In practical applications, additional protective components such as fuses and current limiters should also be considered.
Three States
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Control of DCL Electric Actuators via Modbus/RS485
