Klockner Moeller fault codes
Hello,
If your Klockner Moeller driver is not actuating the motor;
The Motor Will Not Start
The motor is not starting, and there is no voltage at outputs U, V, and W. You can resolve the problem by following the control steps mentioned below.
Control and Solution Suggestions
+ Is voltage applied to terminals L, N, and/or L1, L2, and L3? If yes, is the ON lamp lit?
Check terminals L1, L2, L3, and U, V, W.
Switch on the supply voltage.
+ Is the LED display on the keypad indicating a fault message (E ……)?
Analyze the cause of the fault message (Section “Messages”, USER MANUAL).
Acknowledge the fault message with the reset command (e.g., by pressing the STOP key).
+ Has a start signal been issued?
Issue the start signal with the START key or through the FWD/REV input.
+ Has a setpoint frequency been entered under PNU F01?
Enter a setpoint frequency under PNU F01.
+ Are the setpoint definitions correctly wired to terminals H, O, and L?
Check that the potentiometer is connected correctly.
+ Are inputs O and OI connected correctly for external setpoint input?
Check that the setpoint signal is correctly connected.
+ Are the digital inputs configured as RST or FRS still active?
Deactivate RST and/or FRS.
Check the signal on digital input 5 (default setting: RST).
+ Has the correct source for the setpoint frequency (PNU A01) been set? Has the correct source for the start signal (PNU A02) been set?
Correct PNU A01 accordingly.
Correct PNU A02 accordingly.
The Motor Turns in the Wrong Direction
+ Are output terminals U, V, and W correctly connected?
Connect the output terminals correctly to the motor according to the desired direction of rotation.
+ Are the control signal terminals correctly wired?
Use the control signal terminal FWD for clockwise operation and REV for anticlockwise operation.
+ Has PNU F04 been correctly configured?
Set the desired direction of rotation under PNU F04.
Other Control and Solution Suggestions
+ Is the motor load too high?
Reduce the motor load.
+ Is a fixed frequency accessed?
Fixed frequencies always have priority over inputs O and OI.
+ Is no setpoint value applied to terminal O or OI?
Check the potentiometer or the external setpoint generator and replace if necessary.
E01 to E04: Overcurrent in the Output Stage
E01 occurs during static operation, E02 during deceleration, E03 during acceleration, and E04 at standstill.
These codes indicate excessive current in the output stage of the VFD, which triggers an automatic shut-off to protect the system. Possible causes include output short-circuits, a blocked motor, or a sudden excessive load.
E01: Overcurrent in Output Stage During Static Operation
If excessive current is detected in the output stage during static operation, the output voltage is shut down. This could occur during conditions like:
Short circuit in the output of the frequency inverter.
Motor jam or stall.
Sudden excessive load applied to the output.
E02: Overcurrent in Output Stage During Deceleration
If excessive current is detected in the output stage while decelerating, the output voltage is shut down.
E03: Overcurrent in Output Stage During Acceleration
If excessive current is detected in the output stage while accelerating, the output voltage is shut down.
E04: Overcurrent in Output Stage While Stopped
If excessive current is detected in the output stage while stopped, the output voltage is shut down.
(more Over Current fault for VFD)
E05: Overload
The internal electronic motor protection switches off the output voltage because the motor was overloaded.
The internal electronic motor protection has shut down the output voltage due to motor overload. This is a safety measure to prevent damage to the motor. (More Over Load fault)
E06: Overload in Braking Transistor
Indicates that the braking transistor's duty cycle is too great, causing it to shut off.
If the duty cycle of the built-in braking transistor is excessive, the braking transistor is shut down due to excessive voltage generated, cutting the output voltage. This is a precaution to avoid overheating or damage to the braking transistor and other braking resistors.
E07: Overvoltage
Suggests that the motor is operating regeneratively, causing the output voltage to be switched off.
The output voltage is shut down due to the motor working in a regenerative mode, generating energy that is fed back to the Drive. This can damage other components or place the system in a hazardous condition. (more Over Voltage fault)
E08: EEPROM Fault
Indicates that there's a problem with the program memory, possibly due to radio frequency interference or high temperatures.
If, due to radio frequency interference or excessive temperature, the program memory (EEPROM) fails to operate reliably, the output voltage is shut down. If supply voltage is cut off while the RST input is active, an EEPROM error occurs when the supply voltage is reapplied. Technical intervention may be required to resolve this issue.
E09: Undervoltage
Triggers when the DC voltage is too low, causing the output voltage to shut off.
If the DC voltage is too low, the output voltage is shut down as flawless operation of electronics is no longer possible; problems like overheating of the motor and insufficient torque may arise.
E10: Fault in Current Transformer
Indicates a fault in the built-in current transformer, causing the output voltage to disconnect.
The output voltage is cut off when a fault occurs in the built-in current transformer of the Drive. This is a safety measure to prevent potentially harmful or dangerous conditions.
These error codes serve as guides to identify specific types of issues occurring in your equipment and can assist in resolving them.
E11: Processor Malfunction
Indicates that the CPU is not operating correctly, causing the output voltage to shut off.
Description: The processor is not functioning correctly; the output voltage is shut down.
Details: This error code signifies that the central processing unit (CPU) of the Drive (Speed control device) is not operating properly. The processor manages all control operations of the Inverter; hence, its malfunction is a serious issue. In such a scenario, for system safety and hardware protection, the output voltage is automatically shut down. This kind of fault typically requires examination and repair by professional service.
E12: External Fault Message
This happens when an external fault signal is present, causing the output voltage to switch off.
Description: The output voltage is shut down due to an external error message present on a configured EXT input.
Details: This error code indicates that an error message from an external source is adversely affecting the system. This external error message is usually sent to the system via a digital input configured as "EXT" (External). If such an error message is detected, the Drive (speed control device) automatically shuts down the output voltage as a safety measure to prevent externally originating problems from damaging other parts of the system.
E13: Restart Inhibit Activated
Triggered when the mains voltage is switched on while the unattended start protection is active.
Description: A transient interruption occurred in the supply voltage while the main voltage was on or Unattended Start Protection (USP input) was active.
Details: This error code signifies that either the main voltage is on, or there is a transient interruption in the supply voltage while the system is under restart protection (Restart Inhibit). If such a situation occurs when "Unattended Start Protection" (USP) is active, the system generates this error code. This feature is designed to prevent the system from starting or restarting unexpectedly, especially when there are any alterations to the main power supply or supply voltage.
E14: Earth Fault
Indicates earth faults between the U, V, or W terminals and the earth.
Description: Ground faults between U, V, or W terminals and the ground are reliably detected. A protective circuit prevents the frequency inverter from being destroyed but does not protect operating personnel.
Details: This error code indicates a ground fault between U, V, or W terminals and the ground. Such faults typically occur due to electrical leakage or insulation problems. A protective circuit within the system activates to prevent damage to the frequency inverter in such situations. However, this protection mechanism does not shield operating personnel from potential electric shock. Therefore, professional service should be called immediately, and the situation should be carefully assessed when such an error code appears.
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- DF5 User Manuals
- DF6 User Manuals
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