Common troubleshooting and solutions for servo motors of universal testing machines

Universal testing machineCommon troubleshooting and solutions for servo motors

Fault 1: The output current exceeds the current that the motor driver can bear Error symbol: OL

Solution:

1. Check whether the motor is overloaded.

2. Reduce (7-02) Torque boost set value.

3. Increase the output capacity of the motor driver.

Fault 2: Internal electronic thermal power protection action error symbol: OL1

Solution:

1. Check whether the motor is overloaded.

2. Check (7-00) Whether the motor rated current value is appropriate.

3. Check the electronic thermal power station function settings.

4. Increase the motor capacity.

Fault 3: Communication exception error symbol: CE1

Solution:

1. Check whether there is any reverse connection between the communication signal SG+, SG-.

2. Check whether the communication format is correct.

Fault 4: Motor load is too large error symbol: OL2

Solution:

1. Check whether the motor load is too large.

2. Check the overtorque detection level setting value (6-03→6-05).

Fault 5: Overcurrent error symbol during acceleration: OCR

Solution:

1. Check whether the motor driver and the screws are loose.

2. Check whether the U/T1-V/T2-W/T3 output is poorly insulated.

3. Increase acceleration time.

4. Reduce (7-02) Torque boost set value.

5. Replace the motor driver with large output capacity.

Fault 6: Overcurrent generated error symbol during deceleration: OCd

Solution:

1. Check whether the U/T1-V/T2-W/T3 output is poorly insulated.

2. The deceleration time is longer.

3. Replace the motor driver with large output capacity.

Fault 7: Error symbol generated during operation: OCn

Solution:

1. Whether the output is poorly insulated.

2. Check whether the motor is blocked.

3. Replace the motor driver with large output capacity.

Fault 8: When the external multifunction input terminal (M1~M3) is set to be closed with GND, the motor driver stops outputting the error symbol: EF

Solution: Press the “RESET” key after clearing the source of the fault.

Fault Nine: Internal memory IC data writing error symbol: CF1

Solution:

1. Turn off the power and then power on again.

2. Or send it to the factory for maintenance.

Fault 10: Internal memory IC data read exception error symbol: CF2

Solution: Press the RESET key to reset the internal parameters to factory.

Fault 11: Motor driver detects line abnormality (there are seven types of CF3.1→CF3.7) Error symbol: CF3

Solution: If the above seven abnormalities occur, they will be sent directly to the factory for maintenance.

Fault 12: When this function is set by the external multifunction input terminal (M1→M3), the motor driver stops outputting the error symbol: bb

Solution: Clear the signal source "bb" and disappear immediately.

Fault 13: Automatic acceleration and deceleration mode failure Error symbol: CFR

Solution: 1. Is the motor driver matching the motor appropriate? 2. The load recovery moment of inertia is too large. 3. The load changes too rapidly.
Summary: Everyone must master the common fault signals and solutions of the servo motors of the above thirteen universal testing machines. Only in this way can the normal operation of the test machine be ensured.