IMC302A CPU Execution fault (CPU load is more than 95%)

Announcements

From sunburn to sun earn – we’ve got the power! Watch our #poweringgreen videos now.

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
fm
Level 1
Level 1
First question asked Welcome!

Hello,

I am using the IMC302A-F064 for PFC + Motor control of the REF-AIRCON-C302A-IM564 .
With using the MCE Wizard the tool forecast an total CPU Load of 77% as you can see in the screenshot below.

fm_0-1687853591499.png

Unfortunately in our tests with the iMotionlink connected the cpu load is approximately 91% to 93%.
At some tests (after ~45min) the IMC302A stopped with the errorExecution fault (CPU load is more than 95%).

Are there some reasons the forecast has this big deviation and do you have tips for reducing the cpu load?

Thank you for your time and have a great week.

0 Likes
1 Solution
Krupashankar
Moderator
Moderator
Moderator
500 replies posted 50 likes received 25 likes received

Hi @fm,

CPU load for the iMOTION device depends on the following:

  • FOC execution rate( depends on Motor PWM frequency and Fast control rate)
  • PFC execution rate( Depends on PWM frequency )
  • User script execution ( Depends on the number of instructions and execution frequency)

During run time if any of the above operations consume more CPU load then a CPU execution fault will be triggered. Try reducing the above mentioned parameters.

 

Thanks,

Krupashankar

View solution in original post

0 Likes
1 Reply
Krupashankar
Moderator
Moderator
Moderator
500 replies posted 50 likes received 25 likes received

Hi @fm,

CPU load for the iMOTION device depends on the following:

  • FOC execution rate( depends on Motor PWM frequency and Fast control rate)
  • PFC execution rate( Depends on PWM frequency )
  • User script execution ( Depends on the number of instructions and execution frequency)

During run time if any of the above operations consume more CPU load then a CPU execution fault will be triggered. Try reducing the above mentioned parameters.

 

Thanks,

Krupashankar

0 Likes