Dynomotion

Group: DynoMotion Message: 11666 From: tapiolarikka Date: 6/8/2015
Subject: Kflop resetting?
Hi Tom!

I finally got around powering my latest KFlop and found out that Kflop keeps resetting itself,
keeping kmotion disconnected.

After a few trials I noticed that disconnecting the JP14 cable from kflop clears this persistent resetting, and
kmotion connects OK.

Looking at the kflop leds the boot seems to go ok up till the led7 on kanalog blinks once, then there is a short pause and kflop reboots.

In windows hardware the kmotion controller appears under usb controllers briefly then disappears again.

Kflop is powered by external +5VDC PSU.
On Kanalog I have connections on encoder inputs, dac's and both optos. All connections have their other end
on servo drives.
Resetting continues even after I unplugged the cables from drives.

Can you think of any reason/cause for this?

Rgds,
Tapio



Group: DynoMotion Message: 11667 From: TK Date: 6/8/2015
Subject: Re: Kflop resetting?
Hi Tapio,

There is a surge of power from the +5V supply when Kanalog enables and starts up the +/- 15V generators. A reset at that time would normally indicate an inadequate power supply or poor power supply wiring. What kind of supply do you have?  What is its rating?  How is it wired?

Regards
TK

On Jun 8, 2015, at 10:03 AM, tapio.larikka@... [DynoMotion] <DynoMotion@yahoogroups.com> wrote:

 

Hi Tom!

I finally got around powering my latest KFlop and found out that Kflop keeps resetting itself,
keeping kmotion disconnected.

After a few trials I noticed that disconnecting the JP14 cable from kflop clears this persistent resetting, and
kmotion connects OK.

Looking at the kflop leds the boot seems to go ok up till the led7 on kanalog blinks once, then there is a short pause and kflop reboots.

In windows hardware the kmotion controller appears under usb controllers briefly then disappears again.

Kflop is powered by external +5VDC PSU.
On Kanalog I have connections on encoder inputs, dac's and both optos. All connections have their other end
on servo drives.
Resetting continues even after I unplugged the cables from drives.

Can you think of any reason/cause for this?

Rgds,
Tapio



Group: DynoMotion Message: 11668 From: Tapio Larikka Date: 6/8/2015
Subject: Re: Kflop resetting?

Hi tom,
 
The Psu is 5volts/2.5A rail mounted industrial smps with KFlop as only load, so it should be enough. I outsourced the wiring work, so I guess I'll have to do some tests tomorrow. I come back with more
ifno and and questions if necessary.
 
rgds,
Tapio