I'm Powerless, please give ideas

G'day guys,

I have been working on a desk type seat mover for a few weeks. I am not good at Step by steps but will definitely start a thread in projects soon to show you what I have done.

I have a problem though, that when I was setting up my JRK's following @eaorobbie setup guide, I got to testing the motors nothing moved and I had an error saying stop motor. I unchecked stop motor, I didn't apply pressure as to be honest I wasn't exactly sure what would happen. The motor spun (I am using Hall effect pots) and stopped and now I am getting no power from my power supply. I went on to setup the other JRK, but I am immediately getting no power error as there is no power coming from the power supply. I am using DPS-600PB B power supplies modded as per @madgino suggestion of soldering pins together.

Unfortunately, in the excitement to get it working, I forgot to actually test the power supplies before I fitted them, however the fans work and the motor did initially move but I have no output now from either supply.

Do I have bad supplies, have I blown something up or can I do something to fix this.

Also being a front mount desk type, do I invert movement?

Cheers,
Nick

Thanks for your reply @noorbeast . I tested them last night after this happened. I have 0v on the output terminals.
I have a red & green LED on the JRK's if this helps.

@Nicko321 , do you have a sketch of your build?
With the no power error, get a car battery and test with that, but triple check all wires onto it.
And as for the motors being inverted, yes and no, depends on which way they spin in teh first place, but obviously you want them to move the right way

Did you try the setings guide?
Guide to setting PID and motor settings on JRKS

max accell and max duty at 500, max duty while feedback out of range 500

current calibration 130

max current 0 (unlimited)

PID period 20ms

Integral limit 10000

With PID, Leave I alone and at 0

Using the slider bar in INPUT tab of utility only, no simtools, this is how its done.

Set P, I , D to 0 in the decimals, apply settings, now start with P only and work up in increments of 0.1 , aplly settings, go to INPUT tab, tick the box "automatically set target", click run motor and either slide the bar fast from side to side or use the home/end buttons to do max, min motor throwing.

Work up in 0.1, so next would be 0.2, then 0.3, etc. Until you find when you move the slider bar, the motor twitches like a bugger. Once you get that, halve that figure you have in P. So if its say 0.7 , you would put in 0.35.

Now dont worry if when you click apply settings, that the number is not exactly what you typed in.

Once the P number is halved like I said, go to D and work up in increments of 0.1 like you did with P. Apply settings, go to INPUT tab, and run motor and move the slider back and forth fast until the motor lever stops overshooting its stop point and starts to be very solid in stopping.

So for example, you may have a final figures of P 0.3672 , and D of 0.8231 for example. Do not use those figures, I am using an example of what may be the final numbers.

I have found when I do put in say 0.8, apply settings, it gives me 0.79999 or something like that.
I think lights should be yellow and green, open the utility program and see what error its showing

I was doing this following @eaorobbie setup for JRK, using JRK utility software. No simtools. I will try again with your way @bsft when I get home tonight if I have power. It is definitely no power error showing.
@noorbeast I'm not sure I can unsolder these enough to use plugs, but I will investigate.
Thanks again both of you for your advice & help.

can you take a photo or 2 of the boards to show us what you have done?
I have some ideas, but would need to see the soldering job first in case there is something amiss

@bsft , when you say boards, do you want pics of jrk's or my soldering on the power supplies?

JRKS
I dont use PSU server power supplies, only LED power supplies

@bsft, here is a pic of jrk. Will post one of the second

Well I cannot see any obvious problems, so try using a car battery and test one JRK At a time

Thanks @bsft. what led power supplies do you use, I can find up to 360W, is that big enough? Do you need to do any modifications?

something like these http://www.ebay.com.au/itm/500W-DC-...09?pt=LH_DefaultDomain_15&hash=item25a294ed41
screw terminals for 240 wire, and screw terminals for 12v, piece of cake. No modifications. Obviously test them when they arrive to make sure they work.
server PSUS are usually cheap because they are at the end of their service life. Hence I pay more for new stuff.

Obviously test them when they arrive to make sure they work.


I have a motorbike battery that lives on trickle charge. I will test with that shorlty and if the power supplies are cactus I will order new.

Thanks as always for your wisdom. I will post photos of everything when I can.

Cheers

i have tested one jrk with a battery.following what you have described above @bsft I found when I ran the motor and moved the slider the rig would move, but would also pulse, then it would shut down.

I am getting a Motor driver error, which Poluolu say is "The jrk 12v12’s motor driver fault occurs when it detects that motor output A is shorted to ground or VIN."

I also read on their site that in reverse Output A is = VIN. Does this mean I just need to invert my directions, or something much more sinister?

Thanks @noorbeast do you mean in the feedback tab, relearn the min/ max to say 20mm each way?