PARTIAL STROKE TEST FOR A VALVE

1 . An actuator comprising:

a motor configured to rotate a valve positioned in a conduit;

an actuator controller operatively connected to the motor, the actuator controller including a processing circuit, the processing circuit including a processor and memory, the memory storing instructions that, when executed by the processor, cause the processor to perform operations, the operations comprising:

identifying a condition for performing a partial stroke test of the valve; and

performing the partial stroke test of the valve by:

controlling the motor to rotate the valve from a first position prior to the partial stroke test towards a second position; and

controlling the motor to rotate the valve back to the first position.

2 . The actuator of claim 1 , wherein the second position is within a dead space for the valve.

3 . The actuator of claim 2 , wherein controlling the motor to rotate the valve from the first position towards the second position and controlling the motor to rotate the valve back to the first position comprise:

controlling the motor to rotate the valve from the first position prior to the partial stroke test towards the second position within the dead space for the valve; and

while the valve is located in the dead space, controlling the motor to rotate the valve back to the first position, to maintain a fluid flow condition for the conduit during the partial stroke test of the valve.

4 . The actuator of claim 1 , wherein the operations further comprise:

monitoring a duration in which the valve is positioned in the first position, wherein the condition is the duration exceeding a threshold.

5 . The actuator of claim 1 , wherein the operations further comprise:

determining whether the valve moved from the first position towards the second position.

6 . The actuator of claim 5 , wherein controlling the motor to rotate the valve back to the first position is performed responsive to determining whether the valve moved from the first position towards the second position.

7 . The actuator of claim 5 , wherein the operations further comprise:

issuing one or more notifications indicating a malfunction of the valve based on the partial stroke test.

8 . The actuator of claim 5 , wherein determining whether the valve moved from the first position towards the second position comprises:

monitoring an armature position of the motor; and

determining, based a change in the armature position, that the valve moved from the first position towards the second position.

9 . A system, comprising:

a valve configured to be positioned in a conduit and having a range of motion;

an actuator including a motor configured to rotate the valve between a stopping position for a first position at one end of the range of motion and a stopping position for a second position at an opposite end of the range of motion; and

an actuator controller operatively connected to the motor, the actuator controller including a processing circuit, the processing circuit including a processor and memory, the memory storing instructions that, when executed by the processor, cause the processor to perform operations, the operations comprising:

identifying a condition for performing a partial stroke test of the valve; and

performing the partial stroke test of the valve by:

controlling the motor to rotate the valve from the first position towards a second position; and

controlling the motor to rotate the valve back to the first position.

10 . The system of claim 9 , wherein the valve is rotated from the first position towards the second position and back to the first position while maintained in a dead space for the valve during the partial stroke test.

11 . The system of claim 10 , wherein, while the valve is maintained in the dead space, a fluid flow condition for the conduit is maintained during the partial stroke test of the valve.

12 . The system of claim 9 , wherein the operations further comprise:

monitoring a duration in which the valve is positioned in the first position, wherein the condition is the duration exceeding a threshold.

13 . The system of claim 9 , wherein the operations further comprise:

determine whether the valve moved from the first position towards the second position, wherein controlling the motor to rotate the valve back to the first position is performed responsive to determining whether the valve moved from the first position towards the second position.

14 . The system of claim 13 , wherein determining whether the valve moved from the first position towards the second position comprises:

monitoring an armature position of the motor; and

determining, based a change in the armature position, that the valve moved from the first position towards the second position.

15 . A method of controlling an actuator, the method comprising:

identifying a condition for performing a partial stroke test of a valve positioned in a conduit; and

performing the partial stroke test of the valve within a dead space of the valve to maintain a fluid flow condition of the conduit by:

controlling a motor of an actuator, the motor configured to drive the valve, to rotate the valve from a first position prior to the partial stroke test towards a second position; and

controlling the motor to rotate the valve back to the first position.

16 . The method of claim 15 , further comprising:

monitoring a duration in which the valve is positioned in the first position, wherein the condition is the duration exceeding a threshold.

17 . The method of claim 15 , further comprising:

determining whether the valve moved from the first position towards the second position.

18 . The method of claim 17 , wherein controlling the motor to rotate the valve back to the first position is performed responsive to determining whether the valve moved from the first position towards the second position.

19 . The method of claim 17 , further comprising:

issuing one or more notifications indicating a malfunction of the valve based on the partial stroke test.

20 . The method of claim 17 , wherein determining whether the valve moved from the first position towards the second position comprises:

monitoring an armature position of the motor; and

determining, based a change in the armature position, that the valve moved from the first position towards the second position.