The basic parameters of the valve electric device2017-06-16
control function can be operated only by outputting the relevant control information.
The advantage of this structure is to facilitate the overall installation of the system to reduce wiring and installation costs, easy to diagnose and troubleshoot. But the traditional integration of structural products also have a lot of imperfections, so the resulting smart electric actuator.
2. Adjustable (closed-loop control)
Adjustable electric actuator not only has a switch-type integrated structure of the function, but also on the valve for precise control, adjust the media flow.
A) Control signal type (current, voltage)
Adjustable electric actuator control signal generally have a current signal (4 ~ 20mA, 0 ~ 10mA) or voltage signal (0 ~ 5V, 1 ~ 5V), the selection of the need to clear its control signal type and parameters.
B) working form (open type, electric type)
Adjustable electric actuator working mode is generally open (to 4 ~ 20mA control, for example, open-type refers to the 4mA signal corresponds to the valve off, 20mA corresponds to the valve open), the other for the electrical (4-20mA control, for example, electric open refers to the 4mA signal corresponds to the valve open, 20mA corresponds to the valve off). Wearable electrode
C) loss of signal protection
Loss of signal protection is caused by line failure caused by the control signal is lost, the electric actuator will control the valve opening and closing to set the protection value, the common protection value is fully open, fully closed, to maintain the original three cases.