Er.831 - AI Zero Drift Too Large

Fault Code Description: When the AI input voltage (AI1 and AI2) is 0 V, the sampled voltage in the servo drive is greater than 500 mV.

Possible Causes and Solutions:

   AI Wiring is Incorrect or Affected by Interference:
- Troubleshooting Method: Check the AI wiring according to the correct wiring diagram.
- Solution: Shorten the cables and use shielded twisted-pair cables. Increase the AI filter time constant:
--  AI1 filter time constant: H03-51
--  AI2 filter time constant: H03-56

   Servo Drive is Faulty:
- Troubleshooting Method: Disconnect the AI cable (input voltage = 0). Check if the AI sampling value in the H0B group exceeds 500 mV.
- Solution: If the AI sampling value exceeds 500 mV, replace the servo drive.

Er.834 - AD Sampling Overvoltage (AI Overvoltage)

Fault Code Description: Er.834 indicates that the AI (Analog Input) sampling voltage exceeds 11.5 V, which may be due to voltage input problems or wiring issues.

Causes:

   AI voltage is too high.
   AI wiring is incorrect or there is interference.

Troubleshooting and Solutions:

   AI voltage is too high:
- Troubleshooting Method: Measure the voltage from the AI input and check if the AI sampling voltage (H0B-21 or H0B-22) exceeds 11.5 V.
- Solution: Adjust the AI input voltage and monitor the AI sampling voltage. Ensure it remains below 11.5 V.

   AI wiring is incorrect or interference is present:
- Troubleshooting Method: Check the AI wiring according to the correct wiring diagram.
- Solution: Rewire the system using shielded twisted-pair cables and shorten the cable length. Increase the AI filter time constant:
--  AI1 filter time constant: H03-51
--  AI2 filter time constant: H03-56

Summary: Er.834 occurs when the AI input voltage is too high or due to wiring issues. Monitoring the AI input voltage and preventing cable interference can help resolve this error.

Er.835 - High-Accuracy AD Sampling Fault

Fault Code Description: Er.835 indicates interference in the high-accuracy AD circuit, which can affect the signal integrity of the AI (Analog Input) circuits and prevent accurate data collection.

Cause:

   Interference in the high-accuracy AI line.

Troubleshooting and Solutions:

   Interference in the high-accuracy AI line:
- Troubleshooting Method: Check the AI wiring according to the correct wiring diagram.
- Solution: Use shielded twisted-pair cables and shorten the cable length. This will reduce external interference and stabilize the signal.

Summary: Er.835 is caused by interference in the high-accuracy AI circuits. Correct wiring techniques and proper cable selection can resolve this issue.

Er.900 - DI Emergency Braking

Fault Code Description: The DI braking switch is triggered. The DI (Digital Input) function is active with FunIN.34: EmergencyStop command.

Possible Causes and Solutions:

   DI Function FunIN.34: EmergencyStop is Triggered:
- Troubleshooting Method: Check if the DI logic signal assigned to FunIN.34: EmergencyStop is valid.
- Solution: Verify the operating mode and clear the DI braking active signal after ensuring safety.

Summary: This fault code occurs when the emergency stop signal is triggered, initiating the braking process.

Er.909 - Motor Overload Warning

Fault Code Description: The accumulated heat of the 60Z series 200 W and 400 W motors has reached the warning level.

Possible Causes and Solutions:

   Motor and Encoder Wiring is Incorrect or Poorly Connected:
- Troubleshooting Method: Check the wiring between the servo drive, motor, and encoder according to the correct connection diagram.
- Solution: Connect the cables correctly according to the wiring diagram. Preferably use cables configured by Inovance.

   Load is Too Heavy:
- Troubleshooting Method: Check the overload characteristics of the servo drive and motor. Verify if the average load ratio (H0B-12) has exceeded 100% for extended periods.
- Solution: Replace the drive with a larger servo drive and compatible motor. Reduce the load and increase the acceleration/deceleration time.

   Frequent Acceleration/Deceleration or Large Inertia Load:
- Troubleshooting Method: Calculate the load inertia ratio or perform automatic inertia adjustment.
- Solution: Increase the acceleration/deceleration time.

   Improper Gain Settings:
- Troubleshooting Method: Observe if the motor produces vibration or abnormal noise during operation.
- Solution: Adjust the gain settings.

   Servo Drive or Motor Model is Incorrectly Configured:
- Troubleshooting Method: For IS620P series products, check the motor model in H00-05 and the drive model in H01-02.
- Solution: Correctly set the drive model (H01-02) and replace with the appropriate motor.

   Locked Rotor:
- Troubleshooting Method: Use Inovance commissioning software or control panel to check the operating reference and motor speed.
- Solution: Remove mechanical obstructions.

   Servo Drive is Faulty:
- Troubleshooting Method: Restart the servo drive. If the error persists, the drive may be faulty.
- Solution: Replace the servo drive.

Summary: This warning indicates that the motor is operating under overload conditions. Taking appropriate measures can prevent damage to the motor.

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