Allen-Bradley 315061-A02 PF700 Drive Board

 Product Details: 

• The PowerFlex 700 drive communicates particular problems within the system resulting from factors such as corrosion, loose connections and seized cooling fans. Understanding why faults occur can help your company find the root of the problem.
• Bound and excess loads can lead to overheating and other issues within your company’s Allen-Bradley PowerFlex 700. An extensive list of possible faults that can appear on the unit’s display screen include:
• Drive OverLoad
• Excessive Load
• Heatsink OvrTemp
• HW OverCurrent
• Load Loss
• Motor Overload
• Motor Thermistor
• OverSpeed Limit
• Shear Pin
• SW OverCurrent
• Trnsistr OvrTemp
• If the unit experiences a high load, it can indicate a mechanical binding. Running the load only a few revolutions faster can overload the drive and cause complications like an overcurrent fault.
• First, check the PowerFlex’s load requirements before operating. If you receive one of the fault codes, start by looking for excess load and reduce it as necessary. Also, make sure to uncouple the load from the motor if the motor isn’t up to speed during Autotune.
• Another step you can take is to confirm the connections between the load and the motor. Any form of excess load can cause the drive system to overheat. Check each component before startup by unloading any load conveyors beforehand.
• Additional prevention and repair methods include:
• Avoid using wet components
• Clean out the clogged pumps
• Inspect the fans, pulleys, gears and worn components
• You can also use an extended acceleration rate to reduce the high starting load. The extended acceleration will start the load slowly through a progression, rather than forcing it to start up right away.
• If the drive's load center has extensive damage, you can replace it to keep your operations running.
• Contamination
• Often, PowerFlex 700 fault codes that designate contamination within the AC drive relate to overheating. Several fault codes that may appear on the screen include:
• Cntl Bd Overtemp
• Heatsink OvrTemp
• HS Temp Imbal U
• HS Temp Imbal V
• HS Temp Imbal W

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