1.Mechanical limit adjustment
Losen the mechanical limit screw and limit nut, turn the handwheel with the left hand and press the switch handle with the right hand in the direction of the arrow to engage the internal clutch of the mechanism to reach the manuel function state (switcing hand when the power is turned on) The handle automatically resets without human intervention), continue to rotate the handwheel clockwise to move the actuator to the fully closed position,rotate the limit screw, and stop turning when it his the internal sector worm gear.Rotate two turns to the left, and finally tighten the nut.In this way, the position of the mechanical limit when the actuator is fully closed is set. Rotate the handwheel in the fully open position counterclockwise and set it in the same way.
POQ series 006 type to 060 type manual switch requires a switch handle (automatic reset function when power is on), 08O type to 200 type does not need a switch handle
2.Electronic travel limit adjustment
Manually close the valve to the position to loosen the switch direction limit cam, adjust it to the position where the limit switch is just pressed down, and then lock the limit cam, so that the position of the electrical limit when the actuator is fully closed is adjusted;The position when fully open can be set in the same way;
3.Adjustment of overload protection device
Under the normal working pressure of the valve, adjust the overload cam so that it just touches the roller of the corresponding micro switch,but it can’t be pressed.When the required torque to openor close the valve is greater than the factory rated torque, the overload rotating shaft will rotate clockwise or counterclockwise, driving the upper overloadcam to press the micro switch to stop the function and output a set ofover torque indications.To protect the electric valve from damage.
The overload protection device has been adjusted before leaving the factory. in principle, no further adjustment is required ,f djustment is requiredthe valve needs to be adjusted under normal working pressure conditions
The potentiometer is used as a feedback output in the actuator, and there are three output terminals, of which the terminal pin ② is connected to the sliding arm of the potentiometer. When the terminal pin of ① is connected to the actuator to open ,the resistance between it and the sliding arm keeps decreasing one end; when the pin of terminal ③ is connected to the actuator to close the action,the resistance to the sliding arm keeps decreasing one end (note: potentiometer)There should be no resistance value crossing zero, umping phenomenon).Use the handwheel to turn the valve to the fully open position, and use a multimeter to measure it, and adjust the resistance of the terminals ①② on the wiring terminals to between 40Ω and 65Ω. If it is not correct, it can be adjusted by turning the transmission gear on the potentiometer.
5.Position indicator adjustment
First close the valve to the correct position, disassemble the 3D window protective cover and 3D transparent protective cover, use an Allen key to loosen the 3D indicator column, rotate it to the correct position and lock it,and then reset and install it in turn (Picture 1). First close the valve to the correct position, disassemble the Ex upper cover, loosen the indicator plate with a Phillips screwdriver, rotate it to the positive position and lock it, and then reset and install it in sequence (Figure 2).