China BN Series Electric Actuator Suppliers - Economic Aluminum Alloy ON/OFF & Modulating Type Factory Solutions

BN series electric actuator is used to control 0-270° rotary valves, such as butterfly valves, ball valves, throttles, baffle valves, plug valves, etc. It is widely used in petroleum, chemical industry, water treatment, ships, paper, power stations, heating supply, building automation, light industry, etc. 380V/220V/110V AC power supply for driving power supply, 4-20 mA current signal, or 0-10 VDC voltage signal to be control signal, can make the valve movement to the required position, realizing automation control. Maximum output torque is 1500N.m.

1) This product is not explosion-proof. Do not use it in environments with flammable gas or corrosive gas.
2) If installed in a water-flooded or outdoor location, please explain in advance.
3) Please reserve wiring and maintenance space, such as for manual operation.
4) In order to avoid rain and direct sunlight, it is necessary to install a protection cover or choose an IP67 protection level.
5) Basic installation direction is to keep the window to the top. For vertical pipeline actuator installation, the cable interface should face the ground.

1) The ambient temperature is in the range of -30℃ ~ 60℃.
2) When the ambient temperature is below zero, install a dehumidifier in the machine.
3) When the working medium is high temperature, the bracket connected with the valve plays a role in reducing heat conduction.
4) When the working medium temperature is below 60℃, please choose the standard support.
5) When the working medium temperature is above 60℃, please choose the high-temperature bracket.

1) Manually turn the valve, confirm that there is no abnormal situation, turn it to the fully closed position, and fix the support on the valve.
2) Place the electric actuator on the support and screw it on gently with bolts and nuts.
3) Turn the electric actuator to the closed position, and fix the valve core shaft and the electric actuator output shaft with the coupling and screw.
4) Use the handle to turn the electric actuator; the movement should be smooth. Be careful not to cross the set limit switch limit.
Note: When installing, make sure that the switch of the actuator is consistent with the switch of the valve. The flange at the bottom of the actuator meets the ISO5211 standard. If the valve connected to it also meets this standard, it can be easily connected; if this standard is not met, an additional bracket connection is required.

1) Adjustment of Stroke Limit:
Turn the handwheel to move the actuator to the position where the valve is fully closed. Then, loosen the limit CAM tightening nut with a wrench, turn the limit CAM (yellow for open, red for close) to adjust it to just press the lower limit switch, and hear the "click" sound 2 times. Then tighten the limit CAM, adjusting the full close position. Set the full open position in the same way (As shown in Figure 14).

2) Adjustment of Mechanical Limit:
Loosen the mechanical limit nut and make sure the actuator moves to the full-closed position. Rotate the limiting nuts, then stop rotating when it comes across the fan-shaped gear inside. Screw out two circles and finally screw the nuts (As shown in Figure 15).

3) Adjustment of Potentiometer:
The potentiometer outputs a feedback signal in the actuator with three output pins. The middle pin is the output, and the left and right sides are the power supply (Note: the resistor should not have a resistance value of zero and jump phenomenon). Use the handle to turn the valve to the fully open position. Use a multimeter to measure the operation of the limit switch. Adjust the pin resistance on the terminal to the range of 35Ω-60Ω. If it is not correct, it can be adjusted by turning the potentiometer transmission gear (As shown in Figure 16).

1) Manual Operation:
Cut power off before making manual operations. Insert the manual handle into the hexagonal hole underneath the rubber cap.
Note: When opening to the full-open and full-closed positions, after the limit switch turns a half circle, it will encounter the mechanical block. If rotated excessively, it could result in damage to other parts, so excessive force should be avoided.

2) Power Operation:
Before making power operations:
* Confirm that the indication on the position meter and the valve opening match each other.
* Confirm that the circuits are properly wired and that the unit operates in the correct direction with external switches.
1) Check the wiring diagram, power supply, and input/output signals correctly.
2) Don't change the internal wiring.
3) Please check the rotating direction if the power supply is three-phase.
4) Make sure the actuator is in the on/off position, turn on the power, and input the open signal.
5) If the actuator runs in the open direction, it means the wiring is correct.
6) If not, 2 wiring lines of the 3 wiring lines must be changed.

1) The product uses special molybdenum base grease, so there is no need to add oil.
2) Regular rotation: When the valve does not work for a long time, the machine can be driven regularly to check for abnormalities.
3) For control type (with field control) instructions, please refer to the actuator control module manual (technical document attachment).