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AG-020-B Electric actuator wiring diagram

the AG-020-B electric actuator is controlled from a microcontroller. Terminal 1 is connected to the DC PSU GND, Terminal 2 is connected to the +24VDC via a high side Power MOSFET(TPS22810) as shown below. This is for power saving.

Power to actuator on/off

Low side MOSFET (AUIPS1021) Q5A and Q5B are used to control the opening/closing of the valve via terminal 3 and 4. The microcontroller I/O lines Valve_Ctrl_1a and Valve_Ctrl_1b provide a 3.3V signal.

control of valves

  • Comments are welcome regarding the power and switching circuitry.

  • Any suggestion on how to monitor the feedback lines on terminal 8 and 10 from a microcontroller. A lamp is not suitable as the system will be enclosed in a box.

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It should be: terminal 1 & 2 connected to PSU , no need to be controlled by MCU. The terminals 3 & 4 are switshed to terminal 1 as depicted using your low side switch (of course the device is connected to DC PSU). Once the valve opens/closes you can turn off the signal. The voltage IMO is the same as supply voltage.

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  • \$\begingroup\$ Terminal 2 is controlled by MCU to cut off the power completely to the valve once switched. \$\endgroup\$ – user49395 Aug 30 '18 at 14:36
  • \$\begingroup\$ @user49395 I guess it already switched off using terminals 1,2. No need to complicate things \$\endgroup\$ – Marko Buršič Aug 30 '18 at 15:14
  • \$\begingroup\$ I am not sure what you mean, If terminal 2 is always connected to the battery then there is a continuous nominal current draw of 0.2A \$\endgroup\$ – user49395 Aug 30 '18 at 15:22
  • \$\begingroup\$ Any suggestion on how to monitor the feedback lines on terminal 8 and 10 from a microcontroller. a Lamp is not suitable as the system will be enclosed in a box? \$\endgroup\$ – user49395 Aug 30 '18 at 15:23

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