Hi everyone,

This text describes two types of faults in a Powerflex drive system:

  Auto-Reset/Run: In case of this type of fault, the drive will attempt to automatically reset the fault if the user has set the value of "Auto Rstrt Tries" (A092) to a value greater than "0". A timer (A093) will start counting down, and when it reaches zero, the drive will attempt to reset the fault. If the cause of the fault is no longer present, the fault will be reset and the drive will restart.

 Non-Resetable: This type of fault cannot be automatically reset and requires repair or correction of the underlying cause, such as a wiring or programming error. The cause of the fault must be corrected before the fault can be cleared.

 This text describes the behavior of a drive system when it experiences a fault. The integral keypad provides a visual notification of the fault by flashing the fault number and a flashing fault indicator. To regain control of the integral keypad, the user can press the Escape key.

This text describes the steps to manually clear a fault in a drive system:

Acknowledge the fault by pressing the Esc key. This will remove the fault information from the integral keypad display and allow the user to use it again. The user can view the most recent fault information by accessing "Fault 1 Code" (d007).

Correct the condition that caused the fault. The cause must be fixed before the fault can be cleared.

After fixing the cause, clear the fault by one of the following methods:

Press Stop if the value of "Stop Mode" (P037) is set to a value between "0" and "3".
Cycle the drive power.
Set "Fault Clear" (A100) to "1" or "2".
Cycle a digital input if the value of "Digital Inx Sel" (A051-A054) is set to option 7, "Clear Fault".

This text describes a procedure to clear a fault in a drive system. The procedure consists of the following steps:

Acknowledge the fault by pressing the Esc key. This will remove the fault information from the integral keypad display and allow the user to use it again. The user can view the most recent fault information by accessing "Fault 1 Code" (d007).

Correct the condition that caused the fault. The cause must be fixed before the fault can be cleared.

After fixing the cause, clear the fault by one of the following methods:

Press Stop if the value of "Stop Mode" (P037) is set to a value between "0" and "3".
Cycle the drive power.
Set "Fault Clear" (A100) to "1" or "2".
Cycle a digital input if the value of "Digital Inx Sel" (A051-A054) is set to option 7, "Clear Fault".
The text provides the steps (Option/Step) to clear the fault.
.

This text describes how to automatically clear faults in a drive system. There are two methods:

Auto-Reset/Run: This method is used to clear Type 1 faults and restart the drive. To use this method, set "Auto Rstrt Tries" (A092) to a value other than "0" and set "Auto Rstrt Delay" (A093) to a value other than "0".

Clear OverVoltage, UnderVoltage, or Heatsink OvrTmp faults without restarting the drive. To use this method, set "Auto Rstrt Tries" (A092) to a value other than "0" and set "Auto Rstrt Delay" (A093) to "0".

The Auto Restart feature allows the drive to automatically reset faults and restart without user or application intervention, providing remote or "unattended" operation. However, caution should be used when enabling this feature, as certain faults (Type 2) that may indicate drive component malfunction are not resettable.

F2 Auxiliary Input is a fault condition indicating that the auxiliary input interlock is open. To resolve this fault, you should take the following steps:

Check the wiring of the remote input to ensure that it is connected properly.
Verify the communication programming for the auxiliary input to see if the open condition is intentional or not.
It's important to troubleshoot the root cause of the fault to avoid future occurrences and ensure proper operation of the drive system.

F3 Power Loss is a fault condition indicating that there is excessive DC bus voltage ripple. This can be caused by a number of factors, including phase loss or line imbalance on the incoming line. To resolve this fault, you should take the following steps:

Monitor the incoming line for phase loss or line imbalance, which could be affecting the DC bus voltage ripple.
Check the input line fuse to see if it has blown, which could be causing the voltage ripple.
If the root cause of the F3 Power Loss fault is not addressed, it can result in further problems with the drive system.

F 4 Undervoltage ; This fault indicates that the DC bus voltage has fallen below the minimum acceptable value. To resolve this issue, the user should monitor the incoming AC line for low voltage or line power interruption. The user may also need to check for any other issues that could cause low voltage, such as a problem with the power supply, wiring, or another component in the system.

The fault F5 "OverVoltage" means that the DC bus voltage exceeded the maximum value. To fix the issue, you should monitor the incoming AC line for high line voltage or transient conditions and also consider extending the deceleration time or installing a dynamic brake option if the fault is caused by motor regeneration.

 F 6 fault motor stalled If the drive is unable to accelerate the motor, there are several steps you can take to resolve the issue:

Increase P039-A067 [Accel Time x]
Reduce load so that the drive output current does not exceed the current set by parameter A089 [Current Limit 1].


The F7 fault indicates an internal electronic overload trip and is caused by an excessive motor load. The first step to resolve the fault is to reduce the load so that the drive's output current does not exceed the current set by parameter P033 [Motor OL Current]. Secondly, verify the setting of A084 [Boost Select].

F8 Heatsink OverTemp Heatsink temperature exceeds a predefined value.

Check for blocked or dirty heat sink fins. Verify that ambient temperature has not exceeded 40°C (104°F) for IP30, NEMA UL Type 1 installations or 50°C (122°F) for IP20/Open type installations.
Check fan operation.


F12 HW OverCurrent is a fault that indicates that the drive's output current has exceeded the hardware current limit. To resolve this fault, follow these steps:

Check the programming to ensure that it is correct.
Check for any excess load, an improper setting for A084 [Boost Select], DC brake volts set too high, or other causes of excess current.
Address the underlying cause of the excess current to resolve the fault.

---

This error message is indicating that a fault has occurred in the drive and is indicated by a flashing red status light. To resolve the issue, the following steps can be taken:

Press the stop button.
Cycle the power.
Set the A100 [Fault Clear] parameter to option 1 "Clear Faults".
Cycle the digital input if the A051-A054 [Digital Inx Sel] parameter is set to option 7 "Clear Fault".

These are steps to clear a fault in a drive system. If the red status light on the drive is flashing, indicating that the drive is faulted, you can clear the fault by pressing the stop button, cycling power, setting the A100 [Fault Clear] parameter to option 1 "Clear Faults", or cycling the digital input if A051 - A054 [Digital Inx Sel] is set to option 7 "Clear Fault".

+ Powerflex 40 Fault codes page 1

+ Powerflex 40 Fault codes page 2

+ Powerflex 40 User manuals

+ Allen Bradley main page

+ Back to main page   

++ VFD Main Page 

-