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

Motor Control ICs Forum Discussions

sohail
Level 3
50 sign-ins 10 questions asked 10 replies posted
Level 3

Hi@ Krupashankar

                                      I am Trying to Read IU current Value when I send Command 

Note: Motor is Stop mode not running

0x01,0x05,0x01,0x7A,0x00,0x00,0xFE,0x80

data received
0x1,0x85,0x1,0x7A ,0xF9,0xFF,0x5,0x1

Motor Ampere iU = FFF9,in decimal = 65529

again Send

0x01,0x05,0x01,0x7A,0x00,0x00,0xFE,0x80


data received

0x1,0x85,0x1,0x7A,0x5,0x0,0xF9,0x0

Motor Ampere iU = 5,in decimal = 5

I don't understand Why I get FFF9 value?

 

when I run motor  got Correct Rpm by reading Register   0x7D; // Motor speed Register 125=7D

but IU current give 40,60,70 Reading & also FFC9 or different value FF

PL guide what I am doing Wrong & From where FF values came.

 

Thanks 

0 Likes
1 Solution
Krupashankar
Moderator
Moderator 250 replies posted 100 solutions authored 5 likes given
Moderator

Hi @sohail,

Register Iu is a signed 16-bit value representing the current in the U phase so you are reading both positive and negative current.

Krupashankar_0-1660218210464.png

For more details please refer to section 3.2.7.1 Iu in iMOTION SRM.

Please let us know if further details is needed.

 

Thanks,

Krupashankar

View solution in original post

0 Likes
3 Replies
Viswa
Moderator
Moderator 10 solutions authored First like received 100 sign-ins
Moderator

Hi Sohail,

Thanks for reaching to us, please provide the iMOTION controller and the evaluation board used for this project?

Best Regards

0 Likes
sohail
Level 3
50 sign-ins 10 questions asked 10 replies posted
Level 3

Hi,

            I am Using I motion2GO Board.

0 Likes
Krupashankar
Moderator
Moderator 250 replies posted 100 solutions authored 5 likes given
Moderator

Hi @sohail,

Register Iu is a signed 16-bit value representing the current in the U phase so you are reading both positive and negative current.

Krupashankar_0-1660218210464.png

For more details please refer to section 3.2.7.1 Iu in iMOTION SRM.

Please let us know if further details is needed.

 

Thanks,

Krupashankar

0 Likes