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[Farooq8899]

Hi, 

Good afternoon.

I hope you are doing well.

We are facing this problem.

Can you suggest me , how can we solve this problem . 

[BJacqz]

Hello,

This fault result on high torque demand from motor, I advise you to have a look on this article : What are some steps to troubleshoot fault code OHF on an ATV61 and ATV71 drive (Overheating faults)?...

As well as on attached note.

[LeoLazzaro]

Hello Farooq88  , Thank you for your question

Drive overheating means that hetsink reach a high temperature , you can check the THD ( drive thermal status) value in the HMI . It is in % , and the fault is trigger when this value reach 118% . Generally this fault is related to the following root causes

* Ambient temperature too high
* Bad enclosure cooling.
* Enclosure Inlet air Filter blocked.
* Fan failure.

Please could you share with us the ATV71/61 commercial reference.?

Thank you in advance

B.R.

[Farooq8899]

Good evening sir,

Thank you for good response.

Your are right sir, when thermal status reach 118 , then alarm appear, 2 days before I clean heatsink and air blower and also clean filters.

All fans are working properly. 

I put one window AC front of power card , now thermal status is under 100 % . But I fell blower fan not going on proper time. I want to start fan early. 

Please sir give me more suggestions untill solve this problem. 

[BJacqz]

Small remark is may be to check the Motor switching frequency (PWM) and decrease it (if it is not already on mini possible). setting is SFR.

[Farooq8899]

Good morning Sir, I hope you are doing well.

Can you you help me to find the temperature sensors of power board. 

Can you send me the pictures temperature sensors, may be the sensor is not working properly.  I am sending two pictures. In this time thermal state is low but fan is running. 

[Kevin_McDonald]

Drive overheat happens when the Drive thermal state reaches 118%.  You can monitor this under the Monitor menu.  For overheat faults, you need to first check and confirm the heatsink fans are running.  If you can provide the drive part and serial numbers, we can provide more specific details on where you may be able to check the fans and also part numbers for replacement if needed.  

[LeoLazzaro · Accepted solution]

Dear, I have checked the picture in this size of drives the fans are runing as soon you give the run order . In big power the fans are not manage by the termperature of the sensor , then Fans must work all the time during runing. The fans are in the bottom in this size. Maybe they are stuck and are  not runing properly.  The sensor is the heatsink , no easy to access and for this type of intervension I recommend you to reach the official Schneider Electric  local service .  For other side , in the installation manual is written how to supply the fans by external supply ( picture with yellow label) , but first you must to be sure that fans are working. 

[LeoLazzaro]

https://download.schneider-electric.com/files?p_enDocType=User+guide&p_File_Name=ATV71E_Installation... 

Check page 70