WEG CFW09 Faults - CFW-09 Drives

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Here is the listing of Weg CFW-09 faults. This list is really helpful for CFW09 troubleshooting and there are brief explanations for the faults included. When a fault is detected, the inverter is disabled and the Fault Code is
displayed on the readout in the EXX form, where XX is the actual fault number, for example: E01.

To restart the inverter after a fault has occurred, the inverter must be reset. You can reset the drive by: disconnecting and reapplying AC power (which is power-on reset), by pressing the key (manual reset), automatic reset through P206 (auto-reset setting), by digital input: DIx = 12 (P265 to P270 also found in settings), by Serial interface, or by Fieldbus interface. Here is the list of CFW09 alarms / faults:

• E00 Output Overcurrent :: Causes: Short-circuit between two motor phases, Short-circuit between braking resistor cables, When the output current reaches 2 x P295, caused by: very high
  DIx (Digital Input) load inertia, acceleration ramp too fast or incorrect regulation and / or configuration parameters, Transistor module shorted, or P169 to P172 set too high
  
  
• E01 Overvoltage (Ud) :: Causes: Power Supply voltage too high, check Ud in P004: 220-230 V Models - Ud > 400 V, 380-480 V Models - Ud > 800 V, 500-600 V and 500-690 V Models with power supply between
  500 V and 600 V - Ud > 1000 V, 500-690 V models with power supply between 660 V and 690 V and 660-690 V models - Ud > 1200 V, Load inertia too high or deceleration ramp too short, or P151 or P153 set too high
  
  
• E02 Undervoltage (Ud) :: Causes: Power Supply voltage too low, DC Link check Ud in P004: 220-230 V power supply - Ud < 223 V, 380 V power supply - Ud < 385 V, 400-415 V power supply - Ud < 405 V, 440-460 V power supply - Ud < 446 V, 480 V power supply - Ud < 487 V, 500-525 V power supply - Ud < 532 V, 550-575 V power supply - Ud < 582 V, 600 V power supply - Ud < 608 V, 660-690 V power supply - Ud < 699 V, Phase loss at the input, Auxiliary circuit fuse blown (only valid for 105 A and 130 A/220-230 V, 86 A to 600 A/380-480 V and 44 A to 79 A/500-600 V refer to item 3.2.3), Pre-charge contactor defective, P296 set to a voltage higher than the power supply voltage
  
  
• E03 Input Undervoltage / Phase loss :: Causes: Power Supply voltage is too low, check Power Supply voltage: 220-230 V Models - Power Supply < 154 V, 380-480 V Models - Power Supply < 266 V, 500-600 V and 500-690 V Models - Power Supply < 361 V, 660-690 V Models - Power Supply < 462 V, Phase loss at the inverter input, Activation Time: 2.0 s
  
  
• E04 Inverter Overtemperature or Pre-Charge Circuit Defective :: Causes: Ambient temperature too high (> 40 degree C) and/or output current too high; or ambient temperature < -10 degree C, Blowers locked or defective, Auxiliary circuit fuse blown (only valid for 105 A and 130 A/220-230 V, 86 A to 600 A/380-480 V and 44 A to 79 A/500-600 V refer to item 3.2.3), Problem with the supply voltage - voltage sag or interruption (phase loss) - last for more than 2 seconds and with the phase loss detection disabled (P214 = 0), Signal with inverted Polarity at Analog inputs AI1/AI2
  
  
• E05 Inverter Motor / Overload (i x t function) :: Causes: P156, P157 and P158 set too low for the motor being used, Motor is under an actual overload condition
  
  
• E06 External Fault :: Causes: Any DIx (DI3 to DI7) programmed for external fault detection (P265 to P270 set to 4 – No Ext Flt) is open (not connected to + 24 V), Terminal block XC12 on the control board CC9 is not properly connected
  
  
• E07 Encoder Fault :: Causes: Miswiring between encoder and terminal block XC9 (optional board Encoder Fault EBA/EBB/EBC/EBE). Refer to item 8.2, Encoder is defective
  
  
• E08 CPU Error :: Causes: Electrical noise
  
  
• E09 Program Memory Error (Checksum) :: Causes: Memory with corrupted values
  
  
• E10 Error in the Copy Function :: Causes: A bid to copy the HMI parameters to the inverter with different Software Version
  
  
• E11 Ground Fault :: Causes: Short-circuit between one or more output phases and ground, Motor cable capacitance to ground is too high
  
  
• E12 Braking Resistor Overload  :: Causes: Load inertia too high or deceleration ramp too short, Load on the motor shaft too high, P154 and P155 programmed incorrectly
  
  
• E13 Incorrect Encoder Sense of Direction :: Causes: Cables U, V, W to motor are inverted, Encoder channels A and B are inverted, Encoder mounted in wrong position. Quick Note: This fault will only occur during self-tuning
  
  
• E15 Motor Phase Loss :: Causes: Bad contact or broken wiring between motor and inverter, Incorrect value programmed in P401, Vector Control without orientation, Vector Control with encoder, encoder wiring or connection to motor is inverted
  
  
• E17 Overspeed Fault :: Causes: When the effective overspeed exceeds the value of P134+P132 longer than 20ms
  
  
• E24 Programming Error :: Causes: Incompatible parameters were programmed.
  
  
• E31 Keypad (HMI) Connection Fault :: Causes: Keypad cable misconnected, Electrical noise in the installation (electromagnetic interference)
  
  
• E32 Motor Overtemperature :: Causes: Motor is under an actual overload condition, Duty cycle is too high (too many starts/stops per minute), Ambient temperature is too high, Motor thermistor miswiring or short-circuit (resistance < 100 ?) at the terminals XC4:2 and XC4:3 of the optional board EBA or at the terminals XC5:2 and XC5:3 of the optional board EBB, P270 programmed to 16 unintentionally, with EBA/EBB board not installed and/or motor thermistor not connected, Motor in locked rotor condition
  
  
• E33 Speed Without Control :: Causes: Overweight, Brake Failure
  
  
• E34 Long Period at Torque Limit :: Causes: The load was too heavy and the CFW-09 operated at torque limitation, for a period longer than allowed, Failure on the brake opening caused the CFW-09 to operate at torque limitation for a period longer than allowed
  
  
• E41 Self Diagnosis Fault  :: Causes: Memory error or any internal inverter circuit defective
  
  
• E70 Internal DC Supply Undervoltage :: Causes: Phase loss at the R or S input, Auxiliary circuit fuse blown (only valid for 500-690 V and 660-690 V models - refer to figures 3.7 f) and g))
  
  
• E71 Watchdog Error for the PLC Board :: Causes: When the PLC board stops communicating with the CFW-09 for more than 200 ms
  
  

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