Source: Thermal Control Circle

Debugging method and troubleshooting of Yangxiu electric door

1. Yangxiu DZW series electric actuator

1.1 Main technical parameters

Power supply: AC380V, 50Hz, three-phase three-wire system

Valve position signal: output 4~20mA

Protection level: IP55

Ambient temperature: -20℃~60℃

Output Power: 0.030~15KW

1.2 Operation

operate in the \”remote\” or \”local\” state respectively. When the power is turned on each time, it is in \”remote\”. If you need to perform \”local\” operation, click \”local\” ” button to switch the “Remote” status to “Present” \”Local\” state. At this time, the green luminous tube indicating the \”remote\” state goes out, and the red luminous tube indicating the \”local\” state lights up. The \”on\”, \”off\” and \”stop\” buttons for remote operations do not work and can only be operated in Operate the \”on\”, \”off\” and \”stop\” buttons on the local operation panel.

1.3 Precautions for adjustment

Check whether the grounding is reliable before turning on the power. Newly installed electric devices must be powered on for the first time. Check the motor phase sequence and whether the control circuit is correct to prevent the motor from running out of control.

1.4 Torque control mechanism adjustment

1.4.1 First adjust the closing torque.

1.4.2 According to the torque characteristic curve provided by the product, start from the small torque characteristic curve and the small torque value, and gradually increase the torque value until the valve is tightly closed. .

1.4.3 Adjust the torque. Generally, the torque in the opening direction is larger than the torque in the closing direction.

1.4.4 The above adjustments are all in the blankIt should be adjusted when there is no medium pressure and other factors. When there is pressure and temperature, attention should be paid to whether it can be closed tightly. If it is not closed tightly, it should be increased appropriately. The torque value shall be based on whether it is closed tightly or opened.

1.5 Stroke control mechanism adjustment

1.5.1 Close the valve tightly manually.

1.5.2 To disengage the stroke control mechanism, use a screwdriver to push the push rod of the stroke control mechanism and rotate it 90° to disengage the driving pinion from the counter gear set.

1.5.3 Use a screwdriver to rotate the \”close\” adjustment shaft in the direction of the arrow until the cam presses the spring pressure plate and causes the micro switch to operate. Then the close stroke is initially adjusted.

1.5.4 Loosen the ejector pin to ensure that the driving gear meshes correctly with the gears on both sides. To ensure the correct meshing, after loosening the ejector pin, you must use a screwdriver to Turn the adjustment shaft left or right.

1.5.5 Opening direction adjustment: After adjusting the closing direction, open the valve to the required position by hand, then disengage the stroke control mechanism and turn \”open\” Turn the adjustment shaft toward the arrow and rotate it in the direction of the arrow until the cam presses the spring plate and activates the micro switch. Then mesh the travel mechanism with the driving gear to complete the adjustment of the open direction stroke. You can repeat the above steps for adjustment.

2. Common fault handling

2.1 Analysis and troubleshooting methods of common faults of power phase loss

Actuator power supply phase loss is divided into two types: static phase loss and dynamic phase loss. A quick way to distinguish between these two types of phase loss is: in local mode, turn the operating button (black button) in the on or off direction. If the display immediately displays a \”power phase loss\” alarm, it is a static phase loss; if If the \”power phase loss\” alarm appears on the display after 1-2 seconds, it is a dynamic phase loss; there are differences in the cause analysis and troubleshooting methods for the two types of phase loss.
2.1.1 Cause analysis and troubleshooting methods for common faults of static phase loss
(1) Cause analysis: One phase of the three-phase power supply of the actuator is missing.
Troubleshooting method: Use an electric pen or multimeter to measure whether the voltage on the power terminal of the actuator is normal. If not, check whether the user\’s power distribution system and lines are working normally. If there is a fault, the user needs to eliminate it to ensure that the power supply is normal.
(2) Cause analysis: The control circuit board signal connection is unreliable.
Troubleshooting method: Reconnect the signal cable or replace it with a new one.

(3) Cause analysis: The circuit components related to the power board are damaged.
Troubleshooting method: Replace the power board with the same model.

2.1.2 Analysis and troubleshooting methods of common faults of dynamic phase loss
(1) Cause analysis: The control circuit board signal connection contact is unreliable.
Troubleshooting method: Reconnect the signal cable or replace it with a new one.

(2) Cause analysis: The AC contactor of the actuator is damaged.
Troubleshooting method: Replace the AC contactor with the same model.

(3) Cause analysis: The motor of the actuator is damaged.
Troubleshooting method: Replace the motor with the same model.

(4) Cause analysis: The circuit components related to the power board are damaged.

Troubleshooting method: Replace the power board with the same model.

2.2 Cause analysis and troubleshooting methods for common motor stall failures
(1) Cause analysis: The manual/electric switching device is locked and the motor is idling.
Troubleshooting method: Use the setter to reset the actuator, turn the handwheel of the actuator, and then electrically operate the actuator to switch to electric mode and run continuously; if it fails to switch to electric mode, it needs to be repeated multiple times. If the fault still cannot be solved after following the previous steps, please contact the factory.

(2) Cause analysis: The AC contactor controlling the motor is damaged or the sow head on the main control board is loose.
Troubleshooting method: Replace the damaged AC contactor or re-insert the plug-in on the main control board.

2.3 Analysis and troubleshooting methods of common power failure causes
(1) Cause analysis: The user\’s power fuse is burned out.
Troubleshooting method: The user checks the corresponding power distribution system and eliminates the fault.
(2) Cause analysis: The anti-surge power fuse on the power board is damaged.
Troubleshooting method: Replace the anti-surge power supply fuse of the same model.
(3) Cause analysis: The power transformer of the actuator is damaged.
Troubleshooting method: Replace the power transformer with the same model if it is damaged.
(4) Cause analysis: The control circuit board signal connection is unreliable.
Troubleshooting method: Reconnect the signal cable or replace it with a new one.

2.4 Analysis and troubleshooting methods of common faults of motor overheating
(1) Cause analysis: The motor runs continuously for a long time and the temperature exceeds 130℃, the temperature switch automatically disconnects the protection .
Troubleshooting method: The actuator suspends work and can resume work only after the temperature of the motor drops.

2.5 Cause analysis and troubleshooting methods for common valve closing over-torque faults
(1) Cause analysis: Actuator closing over-torque protection parameter settingThe setting is too small.
Troubleshooting method: Use the setter to reset the closing torque protection value (increase it), operate the actuator electrically in local mode, and make it run back and forth for 2 to 3 full strokes, without the valve closing over-torque alarm occurring. Yes; if an alarm occurs, continue to adjust the shutdown protection value until the actuator operates normally.
(2) Cause analysis: The actuator selection does not match the on-site operating conditions.
Troubleshooting method: Choose a matching model to replace.
(3) Cause analysis: There are external factors that hinder the normal operation of the actuator (such as the valve being stuck).
Troubleshooting method: The user eliminates factors that affect the normal operation of the actuator.

2.6 Analysis and troubleshooting methods of common faults of over-torque valve opening (example with closing torque valve)

2.7 Valve position Analysis and troubleshooting methods of common overflow faults
(1) Cause analysis: The actuator valve position setting value is lost.
Troubleshooting method: Use the setter to reset the actuator and reset the upper and lower limit values ​​of the actuator.

2.8 Analysis and troubleshooting methods of common failures of valve position underflow
(1) Cause analysis: The actuator valve position setting value is lost.
Troubleshooting method: Use the setter to reset the actuator and reset the upper and lower limit values ​​of the actuator.

2.9 Analysis and troubleshooting methods of common faults when the remote switch cannot be controlled
(1) Cause analysis: The mode button on the electrical cover of the actuator is not in the correct remote position.
Troubleshooting method: Align the \”remote\” character of the mode button with a pointed protrusion mark next to the knob.
(2) Cause analysis: The relevant circuit components of the knob plate are damaged.
Troubleshooting: Replace the knob plate.
(3) Cause analysis: The user\’s remote control signal line is not wired correctly or the wiring is unreliable.
Troubleshooting method: Check the wiring to ensure it is correct and reliable.

2.10 Cause analysis and troubleshooting methods for abnormal display on the display screen after the actuator is powered on
(1) Cause analysis: The actuator resets abnormally after power on.
Troubleshooting method: a Use the setter to reset the actuator. b Cut off the power supply of the actuator, take out the backup battery of the actuator, wait for about 15-20 minutes and then power it on again. If it is still not normal, repeat the above process several times; replace the backup battery after normal display. cReplace the main control board with the same model.

2.11 Oil leaks from the surface of the actuator oil plug
(1) Cause analysis: The oil plug screw is loose.
Troubleshooting method: Tighten the oil plug screw and wipe away the oil stains.