SVGEN_MACRO test failed

shuen jan hsu

Intellectual 340 points

I'm using TMDSHVMTRPFCKIT to control ACIM with sensorless.

but i got stuck in Level 1A(SVGEN_MACRO test).

According to the document, it will be the figure below.

and this is my result of svgen1_Ta

How can i solve it?

Thanks

over 8 years ago

0 Ramesh Ramamoorthy over 8 years ago

TI__Mastermind 27240 points

Hmm... I suspect it may be due to a large value of 'prescaler' used for graph tool. If it is 5, you should not see this problem.

Apply a little DC link voltage (<25V @ no more than 0.2A limit setting), and see if the voltage feedback is also bad like this.

rgds,
ramesh

0 shuen jan hsu over 8 years ago in reply to Ramesh Ramamoorthy

Intellectual 340 points

thanks for reply
i'm using the 15 DC power entry , so it may not be large DC voltage.
Does the prescaler you meant is dlog.prescaler this parameter?
If it is, i set it as only 1.

0 Manish Bhardwaj over 8 years ago in reply to shuen jan hsu

TI__Mastermind 43730 points

put the variable named "dlog" in the watch window , see if write_ptr is periodically updating ??

you can also change the "prescalar" ramesh referred to in the previous post ,

Also how did you import the graphs ?

how much is the SpeedRef set at ??

0 shuen jan hsu over 8 years ago in reply to Manish Bhardwaj

Intellectual 340 points

thanks for reply

I get a right graph, when i change the start address in graph properties with DLOG_4CH_buff1 & 2.

Before change it, i typed &(svgen1).Ta in start address , and got the wrong figure.

I wonder why i can't use &(svgen1).Ta instead DLOG_4CH_buff1?

0 Manish Bhardwaj over 8 years ago in reply to shuen jan hsu

TI__Mastermind 43730 points

shuen,

Great you got it working..

the graphing is done on the microcontroller, that's why you cannot just put the variable name for the graphs.

regards
Manish

C2000™︎ microcontrollers

C2000 microcontrollers forum

SVGEN_MACRO test failed