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turn on yaskawa psu

turn on yaskawa psu

(OP)
Hi, I have a question for itsmoked but any help will be apreciated. I'm looking for a way to use a cps-10n psu from an old yaskawa cnc controller but without the cpu. The psu works and the source led lights up but I can't power up the main outputs . I think that the on signal is in the bus like connector in the back of the psu but I can't understand the circuit fully.

I found a bit of info in the thread thread797-255263: Troubleshooting a switcher. so it seems that is possible.

Thanks a lot for your help

RE: turn on yaskawa psu

dhweizel; There are three pins on the big 60 pin connector that need to be connected for the supply to fully power up. That was what, seven years ago? Gah! I don't remember which three. I will look around my office later today and maybe find that info but no promises.

Keith Cress
kcress - http://www.flaminsystems.com

RE: turn on yaskawa psu

(OP)
Thanks for your reply itsmoked, the fact that there is no watchdog or something more complicated is a great news.

RE: turn on yaskawa psu

(OP)
Success!!! the missing bit of info that there is three pins to power on was the key.

For the posterity: in the corner of the connector (from the back) there is a gnd pin surrounded by pins with pull up resistors to 24v .

To power on the psu you must short to gnd in this way :


The conector:

1 2 3 (gnd)
4 5 6
* * *

Shorted: pins 1,2,3,6

--+
**|


Thank you very much

RE: turn on yaskawa psu

Yay!!! That is excellent! Good thing too since 2 hours of rummaging did not turn up the notes or jumper I expected to be sitting around the two CPS-10Ns I have. I'm very relieved you got it.

So what are you doing to/with your CPS-10N?

Keith Cress
kcress - http://www.flaminsystems.com

RE: turn on yaskawa psu

(OP)
I'm retrofitting a hyundai drill tap center, originally it use a yasnac mx3 with some problems and I'm installing a new computer running linuxcnc.

I planning to reuse the 24v psu to avoid the need to run new cables and connectors to the io.

regards

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