Why does module make constant click noise ?

A Embedded module is based on Renesas M306N5FCTFP Microcontroller.  Two buttons are connected to this module.  Left button moves the left seat to folded or seated position.  Right button moves the right seat from folded or seated position.

Power folding seats are Third Row seats in a particular Ford SUV.  A DC Motor is attached to each seat.  When user presses left, right, or both buttons, module outputs motor voltage to move one or both seats in forward or reverse direction.

This is closed loop feedback system.  Motor has single hall sensor.  It sends hall pulses to module when motor is turning or moving seat(s).

The seats work find in the Ford Vehicle but but on the Bread Board the module makes constant click noise.  After installing same software in the replaced module, still constant click noise.  The module is powered from external DC Power Supply.



What might be the problem ?
LVL 1
naseeamAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

aburrCommented:
Is there an automatically reset circuit breaker in the circuit someplace?
Michael-BestCommented:
The constant click noise is likely caused because the external DC Power Supply is not delivering the same correct amperage and or voltage that the car battery delivers.
In your previous question you stated using a 0 - 20V   0 - 50A DC Power Supply, which cannot deliver the same amperage as a  12 V car battery.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
naseeamAuthor Commented:
>>   Is there an automatically reset circuit breaker in the circuit someplace?

Do you mean is the module continuously resetting ?  Do you mean is the module continuously resetting by hardware or software ?
JavaScript Best Practices

Save hours in development time and avoid common mistakes by learning the best practices to use for JavaScript.

aburrCommented:
"Do you mean is the module continuously resetting ?  Do you mean is the module continuously resetting by hardware or software ? "
hardware

50A at up to 20 volts is enougth power supply for your application
Michael-BestCommented:
"Is there an automatically reset circuit breaker in the circuit someplace?"
Yes, the power seat motor has an auto-reset overload protection circuit. If the motor stops during operation, wait 30 seconds, then reactivate the switch.

"Do you mean is the module continuously resetting ?"
No, the clicking sound is coming from the power IC.

"Do you mean is the module continuously resetting by hardware or software ?"
A power control system on a chip is an integrated circuit, this is hardware and software working in parallel.

"The seats work find in the Ford Vehicle but but on the Bread Board the module makes constant click noise."
If the seats work fine on the 12 V car battery, but click on the 0 - 20V   0 - 50A DC external DC Power Supply, then I conclude that the external DC Power Supply is at fault.
Try:  "on the Bread Board" using another external DC Power Supply unit or try removing the battery from the car and use it as the external DC Power Supply.
Michael-BestCommented:
I requested a moderator to review your choice of splitting points  with my answer with another's question about your question, to answer your question ... which makes no reasonable sense.  

Please read my last post carefully, and if there is something in it that you do not understand then please ask.

In my last post I commented:
"I conclude that the external DC Power Supply is at fault."
If the seat works fine on a car battery but clicks on your AC to DC external DC Power Supply, then the fault is the external DC Power Supply or your AC power supply to the external DC Power Supply.

Regards,
Michael
naseeamAuthor Commented:
The points had been assigned.  This question is closed?
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Automotive

From novice to tech pro — start learning today.