Teco S310 fault codes
Err1: Keypad Operation Error
- Pressing ▲ or ▼ while the VFD is running at a preset speed (00-05 > 0).
- Attempting to modify a parameter that cannot be modified during operation.
Solutions:
- The ▲ or ▼ keys can only be used to modify parameters when 00-05 = 0.
- Modify the parameter in STOP mode.
Err2: Parameter Setting Error
- Cause: Overrunning the parameter limit.
Solution: Reenact the parameter setting within the allowable limits.
Err5: Modification of Parameter Not Available in Communication
- Control command sent during communication.
- Attempting to modify functions 08-02 ~ 08-05 during communication.
Solutions:
- Issue an enable command before communication.
- Set parameters 08-02 ~ 08-05 before communication.
Err6: Communication Failed
- Wiring error.
- Communication parameter setting error.
- Check-Sum error.
Solutions:
- Check hardware and wiring.
- Check functions 08-02 ~ 08-05.
Err7: Parameter Conflict
- Attempting to modify function 12-00/12-06.
- Voltage and current detection circuit is abnormal.
Solution: If resetting is not possible, return the inverter for repair.
Instructions for the Power and Alarm LED of the Inverter:
- Faults that cannot be reset (e.g., CTER, EPR, OH, LV, OV, OC): The Alarm LED flashes quickly. To troubleshoot, cut off the power of the inverter and turn it on again. If the Alarm LED flashes the same as before, the inverter is faulted and needs to be returned for repair.
- Faults that can be reset (e.g., OH-C, OV-C, OC-S, OC-D, OC-C, OC-A, OL2, OL1): The Alarm LED flashes slowly. To release the alarm, cut off the power of the inverter and turn it on again.
OC - Over-current during stop
- Detection circuit malfunction.
- Bad connection for CT (Current Transformer) signal cable.
Solutions:
- Check for noise between the power line and motor line.
- Return the inverter for repair if the issue persists.
OL1 - Motor overload
- Excessive load.
- Incorrect settings for parameter 07-05.
Solutions:
- Increase the motor capacity to handle the load.
- Set parameter 07-05 correctly according to the motor specifications.
OL2 - Inverter overload
Solution: Increase the inverter capacity to handle the excessive load.
LV-C (Lu-c) - Voltage too low during operation
- Power voltage too low.
- Power voltage varies widely (fluctuates).
Solutions:
- Improve power quality or increase the value of parameter 4-04.
- Set a longer acceleration time to reduce the load on the inverter.
- Add a reactor at the power input side to stabilize the voltage.
- Increase the motor capacity to handle the low voltage conditions.
Stp0 - Zero speed at stop
- Cause: Occurs when the preset frequency is less than 0.1 Hz.
Solution: No action required unless the zero speed condition is unintended, in which case check the frequency settings.
Stp1 - Fail to start directly on power-up
- Causes:
- The inverter is set for external terminal control mode (00-03=1) and direct start is disabled (04-09=1).
Solution: Ensure that direct start is enabled (04-09=0) if required, and check the run input is active at power-up.
Stp2 - Keypad Stop operated when inverter in external Control mode
- Causes:
- The Stop key is pressed while the inverter is set to external control mode (00-03=1) and the function of the Stop key is enabled by (04-01).
Solution: Release and re-activate the run contact to restart the inverter. Check the settings of 04-01 and 00-03.
E.S. - External Rapid stop
- Cause: The inverter will decelerate to stop when the external Rapid stop signal is activated via the multifunctional input terminal.
Solution: Check the settings of multifunctional input terminals (01-00~01-04) and ensure the external Rapid stop signal is functioning correctly.
b.b - External base block
- Cause: The inverter stops immediately when the external base block is input by the multifunctional input terminals.
Solution: Check the settings of multifunctional input terminals (01-00~01-04) and ensure the external base block signal is functioning correctly.
OC-S - Overcurrent at start
- Short circuit between the motor coil and the case.
- Short circuit between motor coil and ground.
- The IGBT module is damaged.
Solutions:
- Inspect the motor for any short circuits.
- Inspect the wiring for any short circuits.
- Replace the damaged IGBT module.
OC-D - Overcurrent at deceleration
- Cause: The preset deceleration time is too short.
Solution: Set a longer deceleration time to prevent overcurrent during deceleration.
OC-A - Overcurrent at acceleration
- Acceleration time too short.
- The capacity of the motor exceeds the capacity of the inverter.
- Short circuit between the motor coil and the case.
- Short circuit between motor wiring and ground.
- The IGBT module is damaged.
Solutions:
- Set a longer acceleration time.
- Replace the inverter with one that has the same rating as that of the motor.
- Check the motor for any short circuits.
- Check the wiring for any short circuits.
- Replace the damaged IGBT module.
OC-C - Overcurrent at fixed speed
- Transient load change.
- Transient power change.
Solution: Increase the capacity of the inverter to handle transient changes in load or power.
OV-C (ou-c) - Excessive Voltage during operation/deceleration
- Deceleration time setting too short or excessive load inertia.
- Power voltage varies widely (fluctuates).
Solutions:
- Set a longer deceleration time.
- Add a brake resistor or brake module to dissipate excess energy.
- Add a reactor at the power input side to stabilize the voltage.
- Increase inverter capacity to handle the voltage variations.
OH-C - Heat sink temperature too high during operation
- Heavy load.
- Ambient temperature too high or poor ventilation.
Solutions:
- Check if there are any problems with the load that may be causing overheating.
- Increase inverter capacity to handle the heavy load.
- Improve ventilation conditions to reduce overheating.
Ov (Ou) - Overvoltage when stopped
- Cause: Voltage too high when stopped; detection circuit malfunction.
Solution: Return the inverter for inspection or repair.
LV (Lu) - Low Voltage when stopped
- Causes:
- Power voltage too low.
- Pre-charge resistor or fuse burnt out.
- Detection circuit malfunction.
Solutions:
- Check if the power voltage is correct.
- Replace the pre-charge resistor or the fuse.
- Return the inverter for inspection or repair.
OH - Overheating when stopped
- Causes:
- Detection circuit malfunction.
- Ambient temperature too high or poor ventilation.
Solutions:
- Return the inverter for inspection or repair.
- Improve ventilation conditions to reduce overheating.
CTER - Current Sensor detection error
- Cause: Current sensor error or circuit malfunction.
Solution: Return the inverter for inspection or repair.
EPR - EEPROM problem
- Cause: Faulty EEPROM.
Solution: Replace the EEPROM to resolve the issue.
COT - Communication error
- Cause: Communication error detected (refer to group 8 for detailed troubleshooting).
Solution: Follow the troubleshooting steps in group 8 to resolve the communication error.
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