What does the F074 Ground Fault error mean on my WEG Inverter?
The WEG Inverter has detected a ground fault, which occurred either in the cable between the inverter and the motor or in the motor itself. This could be due to shorted wiring in one or more of the output phases or motor cable capacitance being too large, resulting in current peaks at the output.
What to do if WEG CFW-11 show IGBT Overload Fault?
If your WEG DC drive displays an IGBT Overload Fault (F048), it indicates high current at the inverter output. Consider the values in tables 8.1 to 8.5 according to the used switching frequency. Reduce the load or adjust settings based on specified tables to resolve this issue.
What to do if WEG CFW-11 DC Drives show IGBT Overload Alarm?
If you receive an IGBT Overload Alarm (A047) on your WEG DC drive, it signifies high current at the inverter output. Consider the values in tables 8.1 to 8.5 according to the used switching frequency. Reduce the load or adjust settings based on specified tables.
What to do if WEG CFW-11 show Output Overcurrent?
If your WEG DC drive displays an Output Overcurrent fault (F071), it could be due to excessive load inertia or an acceleration time that is too short. Alternatively, the settings of P0135, P0169, P0170, P0171, and P0172 might be too high. Reduce load inertia or adjust acceleration settings to resolve this.
How to fix DC Bus Overvoltage in WEG DC Drives?
If your WEG DC drive shows a DC Bus Overvoltage (F022), it means the input voltage is too high, causing the DC bus voltage to exceed the maximum permitted value. Ensure that the input voltage does not exceed the rated maximum for your specific configuration.
Why WEG CFW-11 show Motor Overload and how to fix it?
If your WEG DC drive indicates a Motor Overload (F072), the settings of P0156, P0157, and P0158 might be too low for the motor being used, or the motor shaft load is excessive. Adjust settings P0156, P0157, and P0158 as required to resolve this.
What causes the F072 Motor Overload fault on my WEG Inverter?
The WEG Inverter shows a motor overload, because the motor overload protection has been activated. This can happen if the settings of P0156, P0157, and P0158 are too low for the used motor or if the motor shaft load is excessive.
How to troubleshoot Imbalance or Input Phase Loss in WEG DC Drives?
To troubleshoot an Imbalance or Input Phase Loss (F006) in your WEG DC drive, check for a missing phase at the inverter's input power supply or an input voltage imbalance greater than 5%. Ensure all phases are connected and check the mains voltage imbalance.
What causes Motor Overtemperature in WEG DC Drives?
Motor Overtemperature (F078) in WEG DC Drives can be caused by: * Excessive load at the motor shaft. * Excessive duty cycle (too many starts / stops per minute). * High surrounding air temperature. * Loose connection or short-circuit in the wiring connected to the motor termistor. Ensure low loads and verify motor termistor installation to address this issue.
What to do if WEG DC Drives display DC Bus Undervoltage?
If your WEG DC drive shows a DC Bus Undervoltage (F021), it means the input voltage is too low, causing the DC bus voltage to drop below the minimum permitted value. Monitor the input voltage and ensure it meets the minimum requirements for the specific configuration.
General| Category | DC Drives |
|---|---|
| Model | CFW-11 |
| Power Range | 1.1-560 kW (1.5-750 hp) |
| Overload Capacity | 150% for 60 seconds |
| Braking | dynamic braking (optional) |
| Communication | Modbus RTU |
| Enclosure | IP20 |
Overview of HMI keypad functions, display, and parameter access.
Procedures for power, grounding, wiring, fuses, and control connections.
Details on installation, operation, wiring, and technical specifications of the Safety Stop function.
Steps to prepare the inverter before initial power-up.
Steps for initial inverter start-up, including password, oriented start-up, and parameter settings.
How faults and alarms are indicated and handled.
List of faults, alarms, and their likely causes.
Common problems and their corrective actions.
Electrical power specifications of the inverter.
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