stmbl servo drive setup with smart serial.

More
02 Mar 2019 22:36 #127555 by skunkworks
I want to use one of my stmbl drives to power my bldc spindle motor. It is a 155v 750w motor. After a few false starts I figured out the CUI amt102 encoders are not great for position control. (not accurate and hunt around) Anyway - I put a normal optical encoder with index and it seems to work good. (just using the servoterm to 'jog' the servo around)

I have it working with closed loop within the stmbl drive - you can see it here...



Now - I setup a 7i92+7i76 to see if I could communicate with smart serial. I have it finding the stmbl amp - but I am not getting the pins expected.
halcmd: show pin hm2_7i92.0.stbl.0.1.
Component Pins:
Owner   Type  Dir         Value  Name
    14  float OUT             0  hm2_7i92.0.stbl.0.1.current
    14  bit   IN          FALSE  hm2_7i92.0.stbl.0.1.enable
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.fault
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.fault-not
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-00
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-00-not
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-01
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-01-not
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-02
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-02-not
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-03
    14  bit   OUT         FALSE  hm2_7i92.0.stbl.0.1.in-03-not
    14  bit   I/O         FALSE  hm2_7i92.0.stbl.0.1.index_enable
    14  bit   I/O         FALSE  hm2_7i92.0.stbl.0.1.index_enable-not
    14  bit   IN          FALSE  hm2_7i92.0.stbl.0.1.out-00
    14  bit   IN          FALSE  hm2_7i92.0.stbl.0.1.out-01
    14  bit   IN          FALSE  hm2_7i92.0.stbl.0.1.out-02
    14  bit   IN          FALSE  hm2_7i92.0.stbl.0.1.out-03

This is my current stmbl config
link pid
link pmsm
link enc_fb0
link jog_cmd
link misc
conf0.r = .3
conf0.l = 0.0001
conf0.j = 0.0004
conf0.polecount = 2
conf0.mot_fb_rev = 1
io0.out0 = fault0.mot_brake
conf0.max_ac_cur = 20
conf0.max_force = 4
conf0.mot_fb_res = 20000
conf0.mot_fb_offset = -.65
conf0.phase_cur = 5
link sserial

I am swimming around a bit..

Please Log in or Create an account to join the conversation.

More
03 Mar 2019 01:01 #127560 by skunkworks
Rene just let me know that I need to use 2.8 currently. 2.7 doesn't have floating point over smart serial. So I am going to try that :)

Thanks!

Please Log in or Create an account to join the conversation.

More
08 Mar 2019 03:27 #128059 by skunkworks
So - I think the main problem is that the stmbl drive had old firmware in it. I managed to get the drive into a odd state. Flashing the latest firmware fixed the issues I was having..

The following user(s) said Thank You: silopolis

Please Log in or Create an account to join the conversation.

More
30 Mar 2019 18:47 #129987 by silopolis
Hi,

What kind of power supply do you use to feed the 155VDC?

Thanks in advance

Please Log in or Create an account to join the conversation.

More
30 Mar 2019 21:53 #129997 by tommylight
Usually big transformers with rectifiers and some capacitors to smooth the output voltage.
The following user(s) said Thank You: silopolis

Please Log in or Create an account to join the conversation.

More
01 Apr 2019 11:31 #130089 by silopolis
Do you design and build your own circuits or use off the shelf modules/PCBs ?

Please Log in or Create an account to join the conversation.

More
More
02 Apr 2019 03:43 #130127 by skunkworks
Some tinkering

Please Log in or Create an account to join the conversation.

More
03 Apr 2019 16:01 #130206 by andypugh

silopolis wrote: What kind of power supply do you use to feed the 155VDC?


In most applications you can use just a fuse, inrush current limiter [1] and bridge rectifier and rely on the internal caps in the STMBL. You only need external filter caps in high power applications.

[1]That's just an example, you might want to read the data sheets to choose the most suitable.
The following user(s) said Thank You: silopolis

Please Log in or Create an account to join the conversation.

More
04 Apr 2019 13:06 - 04 Apr 2019 13:08 #130281 by silopolis

andypugh wrote: In most applications you can use just a fuse, inrush current limiter [1] and bridge rectifier and rely on the internal caps in the STMBL. You only need external filter caps in high power applications.


ok, so, seems like I should have bookmarked those DIN modules where it seemed you could just plug those thermistors in !?... Couldn't find ICL boards (if that makes sense), but nevertheless, found "proper" ICL DIN modules.

I know that can get toroidal transformer with the secondary outputs I want. But I'm having much harder times finding rectifying circuit modules in for the high voltages the motors I've seen around ask for (220V, 310V).

In the end, I've found professional PSUs for servo motors, but afraid the bill would be discouraging, and a little too far of what I'm looking for as the ideal option would be an Open Hardware circuit.

Finally, opinions seem controversial about switching power supplies for servo applications (as they are in audiophile ones BTW) so they remain a suspended option to me...
Last edit: 04 Apr 2019 13:08 by silopolis.

Please Log in or Create an account to join the conversation.

Time to create page: 0.097 seconds
Powered by Kunena Forum