FAQ

• Cause Analysis 1: Loss of one phase in the three-phase power supply of the actuator.

Troubleshooting Method 1: Inspect the external power supply for normality and eliminate faults in the power distribution system and lines.

 

• Cause Analysis 2: Damage to circuit components related to the power board.

Troubleshooting Method 2: Replace with a power board of the same model.

• Cause Analysis 1: Manual/Electric Switching Device is jammed, leading to motor idling.

Troubleshooting Method 1: Control the actuator to reverse; if it operates normally, the fault is resolved. If switching to electric mode fails after repeating the above operation multiple times, contact the manufacturer.

 

• Cause Analysis 2: External obstacles affecting the normal operation of the actuator (e.g., valve jamming).

Troubleshooting Method 2: User shall eliminate the external obstacles that hinder the actuator's normal operation.

 

• Cause Analysis 3: Poor contact or damage to the Motor Control Unit (MCU).

Troubleshooting Method 3: Inspect the cable connections of the MCU and check for signs of damage to the unit itself.

 

• Cause Analysis 4: Disconnection between the Position Detection Unit and the Signal Feedback Shaft.

Troubleshooting Method 4: Check if the encoder is disconnected from the Signal Feedback Shaft or if the contact is unreliable.

 

• Cause Analysis 5: Failure of the Position Detection Unit.

Troubleshooting Method 5: Replace the encoder.

• Cause Analysis 1: Power failure of the three-phase power supply.

Troubleshooting Method 1: Inspect the external power supply for normality and eliminate faults in the power distribution system and lines.

 

• Cause Analysis 2: Blown fuse on the primary side of the transformer on the power board.

Troubleshooting Method 2: Replace with a fuse of the same model.

 

• Cause Analysis 3: Abnormal output voltage of the power board.

Troubleshooting Method 3: Replace the power board.

 

• Cause Analysis 4: Failure of the display board.

Troubleshooting Method 4: Replace the display board.

• Cause Analysis 1: The motor operates continuously for a long time, with the temperature exceeding 130℃, causing the temperature switch to automatically disconnect.

Troubleshooting Method 1: Suspend the actuator's operation and resume work only after the motor temperature cools down.

 

• Cause Analysis 2: Damage to the temperature switch inside the motor.

Troubleshooting Method 2: Temporarily short-circuit the temperature detection connector for short-term operation. Replace the motor during maintenance.

 

• Cause Analysis 3: Damage to circuit components related to the main control board.

Troubleshooting Method 3: Replace with a main control board of the same model.

• Cause Analysis 1: The torque protection setting value is too low.

Troubleshooting Method 1: Increase the torque protection setting value.

 

• Cause Analysis 2: External obstacles affecting the normal operation of the actuator (e.g., valve jamming).

Troubleshooting Method 2: User shall eliminate the external factors that hinder the actuator's normal operation.

 

• Cause Analysis 3: Mismatch between the actuator selection and on-site operating conditions.

Troubleshooting Method 3: Select and replace with a model matching the on-site requirements.

 

• Cause Analysis 4: Damage to relevant components on the main control board.

Troubleshooting Method 4: Replace the main control board.

• Cause Analysis 1: Failure of the position detection unit.

Troubleshooting Method 1: Replace the encoder.

 

• Cause Analysis 2: Valve position overlimit caused by handwheel operation.

Troubleshooting Method 2: Adjust the valve position via handwheel operation.

 

• Cause Analysis 3: Damage to the motor control unit (MCU).

Troubleshooting Method 3: Replace the MCU.

 

• Cause Analysis 4: Increased inertial effect, but does not affect valve safety.

Troubleshooting Method 4: Appropriately increase the "Overlimit Allowance" in the "Stroke Setting" parameter.

• Cause Analysis 1: Incorrect calibration of the input signal.

Troubleshooting Method 1: Recalibrate the input signal.

 

• Cause Analysis 2: Input signal is lower than 2.3mA.

Troubleshooting Method 2: Inspect the external input signal.

 

• Cause Analysis 3: Damage to relevant components on the analog function board.

Troubleshooting Method 3: Replace the analog function board.

• Cause Analysis 1: Disconnection or unreliable contact of the signal wire of the position detection unit.

Troubleshooting Method 1: Inspect the encoder connection wire and reconnect it securely.

 

• Cause Analysis 2: Failure of the position detection unit.

Troubleshooting Method 2: Replace the encoder.

• Cause Analysis 1: Data loss in the storage unit.

Troubleshooting Method 1: Restore factory settings and reconfigure parameters and stroke.

 

• Cause Analysis 2: Damage to the storage chip.

Troubleshooting Method 2: Replace the main control board.

• Cause Analysis 1: Incorrect or unreliable wiring of signal terminals.

Troubleshooting Method 1: Inspect the signal terminals and rewire them correctly.

 

• Cause Analysis 2: Remote control type menu not set to "Digital".

Troubleshooting Method 2: Set the remote control type menu to "Digital".

 

• Cause Analysis 3: Selection knob not in the remote position.

Troubleshooting Method 3: Rotate the selection knob to the remote position.

 

• Cause Analysis 4: 24V output fault of the power board.

Troubleshooting Method 4: Replace the power board.

 

• Cause Analysis 5: Damage to relevant circuit components on the main control board.

Troubleshooting Method 5: Replace the main control board.

 

• Cause Analysis 6: Damage to the selection knob.

Troubleshooting Method 6: Replace the selection knob.

• Cause Analysis 1: Incorrect or unreliable wiring of signal terminals.

Troubleshooting Method 1: Inspect the signal terminals and rewire them correctly.

 

• Cause Analysis 2: Remote control type menu not set to "Proportional".

Troubleshooting Method 2: Set the remote control type menu to "Proportional".

 

• Cause Analysis 3: Selection knob not in the remote position.

Troubleshooting Method 3: Rotate the selection knob to the remote position.

 

• Cause Analysis 4: Abnormal 4-20mA input signal.

Troubleshooting Method 4: Inspect the input signal.

 

• Cause Analysis 5: Incorrect calibration of the 4-20mA input signal.

Troubleshooting Method 5: Recalibrate the input signal.

 

• Cause Analysis 6: Damage to relevant circuit components on the analog function board.

Troubleshooting Method 6: Replace the analog function board.

 

• Cause Analysis 7: Damage to the selection knob.

Troubleshooting Method 7: Replace the selection knob.

• Cause Analysis 1: Incorrect or unreliable wiring of signal terminals.

Troubleshooting Method 1: Inspect the signal terminals and rewire them correctly.

 

• Cause Analysis 2: Incorrect calibration of the feedback signal.

Troubleshooting Method 2: Recalibrate the feedback signal.

 

• Cause Analysis 3: 24V output fault of the power board.

Troubleshooting Method 3: Replace the power board.

 

• Cause Analysis 4: Damage to relevant circuit components on the analog function board.

Troubleshooting Method 4: Replace the analog function board.

 

• Cause Analysis 5: Damage to relevant circuit components on the main control board.

Troubleshooting Method 5: Replace the main control board.

• Cause Analysis 1: Incorrect or unreliable wiring of signal terminals.

Troubleshooting Method 1: Inspect the signal terminals and rewire them correctly.

 

• Cause Analysis 2: Remote control type menu not set to "M-Bus" (Modbus Bus) or "P-Bus" (Profibus Bus).

Troubleshooting Method 2: Set the remote control type menu to "M-Bus" or "P-Bus".

 

• Cause Analysis 3: Mismatched bus address.

Troubleshooting Method 3: Verify and align the bus address.

 

• Cause Analysis 4: Mismatched bus baud rate.

Troubleshooting Method 4: Verify and align the bus baud rate.

 

• Cause Analysis 5: Bus length exceeding 1200 meters.

Troubleshooting Method 5: Install a bus repeater.

 

• Cause Analysis 6: Terminating resistors not installed on the bus start and end devices.

Troubleshooting Method 6: Install terminating resistors on the bus start and end devices.

 

• Cause Analysis 7: Selection knob not in the remote position.

Troubleshooting Method 7: Rotate the selection knob to the remote position.

 

• Cause Analysis 8: Damage to relevant circuit components on the bus function board.

Troubleshooting Method 8: Replace the bus function board.

 

• Cause Analysis 9: Damage to the selection knob.

Troubleshooting Method 9: Replace the selection knob.

Cause Analysis 1: Damage to relevant circuit components on the knob control board.

Troubleshooting Method 1: Replace the knob control board with one of the same model.