Allen Bradley Powerflex 40 Fault List and Remedy

[benklassne]

Allen Bradley Powerflex 40 Fault List and Recommended Remedies

Here is a list of Powerflex 40 faults/alarms and the recommended actions, hopefully this will help you clear out any Powerflex errors you may have. The Allen Bradley manuals are usually really good.

F2 Auxiliary Input - Auxiliary input interlock is open. - Recommended Action: 1. Check remote wiring.2. Verify communications programming for intentional fault

F3 Power Loss - Excessive DC Bus voltage ripple. - Recommended Action: 1. Monitor the incoming line for phase loss or line imbalance. 2. Check input line fuse

F4 UnderVoltage - DC bus voltage fell below the minimum value. - Recommended Action: Monitor the incoming AC line for low voltage or line power interruption

F5 OverVoltage - DC bus voltage exceeded maximum value. - Recommended Action: Monitor the AC line for high line voltage or transient conditions. Bus over voltage can also be caused by motor regeneration. Extend the decel time or install dynamic brake option

F6 Motor Stalled - Drive is unable to accelerate motor.  - Recommended Action: Increase P039-A067 (Accel Time x) or reduce load so drive output current does not exceed the current set by parameter A089 (CurrentLimit 1)

F7 Motor Overload - Internal electronic overload trip. - Recommended Action: 1. An excessive motor load exists. Reduce load so drive output current does not exceed the current set by parameter (Motor OL Current). 2. Verify A084 (Boost Select) setting

F8 HeatsinkOvrTmp - Heatsink temperature exceeds a predefined value. - Recommended Action: 1. Check for blocked or dirty heatsink fins. Verify that ambient temperature has not exceeded 40 degrees C (104 F) for IP30, NEMA UL Type 1 installations or 50 degrees C (122 F)for IP20/Open type installations. 2. Check fan.

F12 HW OverCurrent - The drive output current has exceeded the hardware current limit. - Recommended Action: Check programming. Check for excess load, improper A084(Boost Select) setting, DC brake volts set too high or other causes of excess current

F13 Ground Fault - A current path to earth ground has been detected at one or more of the drive output terminals. - Recommended Action: Check the motor and external wiring to the drive output terminals for a grounded condition

F29 Analog InputLoss - An analog input is configured to fault on signal loss. A signal loss has occurred. - Recommended Action: 1. Check parameters.2. Check for broken or loose connections at inputs

F33 Auto Rstrt Tries - Drive unsuccessfully attempted to reset a fault and resume running for the programmed number of A092 (Auto RstrtTries). - Recommended Action: Correct the cause of the fault and manually clear

F38 Phase U to Gnd - A phase to ground fault has been detected between the drive and motor in this phase. - Recommended Action: 1. Check the wiring between the drive and motor. 2. Check motor for grounded phase. 3. Replace drive if fault cannot be cleared

F39 Phase V to Gnd - A phase to ground fault has been detected between the drive and motor in this phase. - Recommended Action: 1. Check the wiring between the drive and motor. 2. Check motor for grounded phase. 3. Replace drive if fault cannot be cleared

F40 Phase W to Gnd - A phase to ground fault has been detected between the drive and motor in this phase. - Recommended Action: 1. Check the wiring between the drive and motor. 2. Check motor for grounded phase. 3. Replace drive if fault cannot be cleared

F41 Phase UV Short - Excessive current has been detected between these two output terminals. - Recommended Action: 1. Check the motor and drive output terminal wiring for a shorted condition. 2. Replace drive if fault cannot be cleared

F42 Phase UW Short - Excessive current has been detected between these two output terminals. - Recommended Action: 1. Check the motor and drive output terminal wiring for a shorted condition. 2. Replace drive if fault cannot be cleared

F43 Phase VW Short - Excessive current has been detected between these two output terminals. - Recommended Action: 1. Check the motor and drive output terminal wiring for a shorted condition. 2. Replace drive if fault cannot be cleared

F48 ParamsDefaulted - The drive was commanded to write default values to EEPROM. - Recommended Action: 1. Clear the fault or cycle power to the drive.2. Program the drive parameters as needed

F63 SW OverCurrent - Programmed A098 (SW CurrentTrip) has been exceeded. - Recommended Action: Check load requirements and (SW Current Trip) setting

F64 Drive Overload - Drive rating of 150% for 1 minute or 200% for 3 seconds has been exceeded. - Recommended Action: Reduce load or extend Accel Time

F70 Power Unit - Failure has been detected in the drive power section. - Recommended Action: 1. Cycle power. 2. Replace drive if fault cannot be cleared

F71 Net Loss - The communication network has faulted. - Recommended Action: 1. Cycle power. 2. Check communications cabling. 3. Check network adapter setting. 4. Check external network status

F80 SVC Autotune - The autotune function was either cancelled by the user or failed. - Recommended Action: Restart procedure

F81 Comm Loss - RS485 (DSI) port stopped communicating. - Recommended Action: 1. If adapter was not intentionally disconnected, check wiring to the port. Replace wiring, port expander, adapters or complete drive as required. 2. Check connection. 3. An adapter was intentionally disconnected. 4. Turn off using A105(Comm LossAction)

F100 Parameter Checksum - The checksum read from the board does not match the checksum calculated. - Recommended Action: SetP041 (Reset To Defalts) to option 1 "Reset Defaults".  - Recommended Action:

F122 I/O Board Fail - Failure has been detected in the drive control and I/O section. - Recommended Action: 1. Cycle power.2. Replace drive if fault cannot be cleared.

[zigmund]

I put together a small list of the most frequent Powerflex 40 alarms based on documented experience with this drive:

The PowerFlex 40 is a popular compact AC drive manufactured by Allen Bradley, commonly used in various industrial applications. Here are some of the most common alarms that you may encounter while using the PowerFlex 40:

F005 - Overvoltage Fault: This alarm occurs when the DC bus voltage exceeds the drive's limit, which can be caused by a sudden loss of load, regenerative energy, or input voltage fluctuations.

F007 - Ground Fault: This alarm occurs when a ground fault is detected in the motor or motor wiring. It can be caused by a damaged motor insulation or faulty wiring.

F013 - Motor Overload: This alarm occurs when the motor current exceeds the drive's current limit, which can be caused by a mechanical overload or a motor fault.

F014 - Shorted SCR Fault: This alarm occurs when the drive's output SCR is shorted or damaged, which can be caused by high voltage spikes or excessive current.

F111 - Communication Fault: This alarm occurs when there is a communication problem between the drive and the controller, which can be caused by a faulty communication cable, incorrect settings, or software issues.

It is important to consult the PowerFlex 40 user manual and technical support if any of these alarms occur, as they can indicate serious issues that require immediate attention.