Parker SD2 drive question

[seaman77]

Hi everyone!

My Orac stepper drive...the SD2 has the red led constantly on and a dead transistor or is it a triac. I can't tell.
Maybe someone can tell by description. It is a TO220 package with its metal back pushing with the aid of a flat spring against the huge heat sink and lots of heat sink paste. There is a bunch of them in the SD2 Parker drive.
I have searched most databases in internet but i could not find datasheet for this part...The PKS0320 date code 0383.
Anyone can help?

Thanks!

[Denford Admin]

I'd post a photo and try emailing a link to Parker https://www.parker.com

[seaman77]

Thanks!
That was something I should have thought of before anything else.

cheers

[seaman77]

...Drive SD2 repaired. Dead power transistor coded PKS0320 was actually a TIP32C direct replacement as a part with the code PKS0320 does not and never existed. I do not understand the reason for printing false codes in part like this.

PKS0320.jpg (196.46 KiB) Viewed 6768 times

cheers

[Denford Admin]

Glad you got to the bottom of it and it's useful info for anyone else.
Wonder if the PKS was Parker's own spares part code ?

[seaman77]

It could be a component exclusively made for Parker yes!