Question 6DOF Prototype Dorna EPS-EB Driver Parameters?

Thanos needs to hire someone to help him out. It's sad to see people here being stuck for so long without getting support and apparently he is the only one who can help them with his board. I guess he took more workload than he can process and now it's ricocheting.

I'm back now... Sorry. when I develop or design new things I stay away from forums or social media, and my email piles up often.


What I'm not sure is if you have the wiring correct on the potentiometer side and if you setup correctly the servo drive.
You can measure the potentiometer pins to see which pin is the wiper and which are the top and bottom. the Wiper will give you ohms divided by which side you are measuring, while the two top bottom pins will give you the max Ohm's value.

From what I remember from my experience with Dorna servo drives, their panels are usually locked from the factory and some of the settings are not changed manually from the panel, even if you apply the unlock code.

On almost all Dorna drives, there is RS485 connector that can be used to change the parameters of the drive via the DORWIN software:



Download the software from here:
http://www.newtech.pk/down/DorWin-Commissioning-Software.rar

You will need to make a cable for the Dorna drive using a lan cable (cut in half) and a USBtoRS485 adapter:







Link to a tested adapter:
https://www.ebay.com/itm/Usb-To-RS4...75176-Serial-Converter-New-Ic-vm/223132033566


Thanks
Thanos

Here are some photos of the interface actually:









Thanks
Thanos

Thankyou for replying @Thanos

But unfortunately with the EPS-EB Drivers there is no where to plug an RJ45 in to?

If i need to buy new drives i am willing to do whatever it takes.

Can you point me in the right direction of what to buy?

It should have rs485 connector somewhere, perhaps not shaped as rj45. Can you post some photos of the servo drive ports? (Front panel or anywhere it has connectors)


I have a way better solution for servo drives, but im not sure if compatible with your servomotor existing wiring (power and encoder cable) as its from Syntron, not Dorma.

There is multiple photos of the servo drives at the start of this thread.

I am happy to implement the syntron type if needed ... but can you look at the photos i have already at the top of this thread

Ok, it does have rs485, its on pins 16 and 17 of the CN2 connector.
Pin 16 - rs485 positive
Pin 17 - rs485 negative

Ok thats great but where would i buy the T-568B board ?

The parameters that need fixing are something to do with the torque, If i hold the motors with my fist whilst the driver is on then 2 or 3 of the drivers go into error mode.
The other motors are unable to be stopped with my hands
With the user manual that is posted in this thread i cant seem to understand what torque limit i would need to set.

The T-568B is the Rj45 standard, not a device you need, ignore that.

What you need is the usb to Rs485:
https://www.ebay.com/itm/Usb-To-RS4...75176-Serial-Converter-New-Ic-vm/223132033566

Ok great thankyou.. I have ordered 3 for safe keeping and they should be here within 2 weeks.

My 250mm liners pots should be delivered tomorrow according to aud post so it will give me some time to get them assembled.

On the AMC1280 do I need to select the length of the potentiometers?

No, there is no need to select length for potentiometers. They just provide voltage 0-5v back to the analog inputs of the AMC.

Do you have datasheet or the model of the potentiometer you are getting to help you with proper wiring ?

Here is a photo of the potentiometers i purchased, from what i gathered they are the same as the 150mm novotechnik models i have.
The wiring code looks the same.

I also wouldn't mind using a different way of connecting the wires to the amc1280, the current way i have them connected does not seem very secure. Is there some sort of jumper block where i can use screw terminals?

On the back is this label too, after comparing it also seems like the 1 and 3 wires are reversed?

This is the data that the supplier had given me originally :


Model Number-------------------KTC-250MM


Supply Voltage-------------------Output voltage: 0-10V


Voltage-------------------Power supply voltage: 24V

Linear range: 225mm
Resistance value: 5000 ohms
Resistance tolerance 0.5%
Protection level: 67
Linearity: 1.0~0.1 (%F.S)
Hysteresis: 0.01 (%F.S)
Repeatability: 1000 (%F.S)
Sensitivity: 100
Resolution: 10000


Hope this helps and is the correct ones

The voltages they provide are the max that you can use I suppose.

The connections should be same as I told you before. See here:



To verify the connections are correct, attach the wires of one potentiometer and move the potentiometer manually by hand. You should see the analog input bar for that axis moving (if you click in the encoder while on displaying the bars, it will switch to numbers where you can see the percentages instead).


Thanks
Thanos

Thanks Thanos , i have a bit of work to get done and also wait for the USB to RS485 adapter to get here.
Hopefully in the next week i will have made alot of progress

Hi Thanos

I had not turned on the AMC1280 for a bout a month and it would not boot. So i did the firmware upgrade and it powers on fine.
Will i have to do this every time if i have not used the sim for a long period of time?

So i connected one of my new Linear pots to it and i am able to see the bar changing direction as i manually slide the potentiometer in and out.

I am curious though.. Am i supposed to see the sensor position when its fully retracted as displaying full bars?
I mean i have connected sensor number 5 but when it is in its lowest position it shows the bars maxed on the AMC1280 and when i extend the potentiometer then the bars go to its least display.
You can see the sensor position in this photo.

I have a feeling that the 2 servo drives that are coming up with error 6 and 7 may be faulty after all ... I have gone through and checked as many parameters as i could and they all seem to match.

What i did notice is that if i use the display 11 command which is the internal torque feedback display. The torque gets greater and greater like its spiking until it goes into error.

On the other drives it displays a steady figure.