Relay Wiring to UR10E

General Application Help: How do I?
1

I’m a bit confused on how to wire up a relay to my UR-10E. I was inspired by a youtube video but it’s a bit vague as to the wiring. Arduino VS Universal Robots UR5 - YouTube

Would I be able to wire my relay/arduino as shown in the diagram below

relay_diagram
relay_diagram1275×1650 206 KB

2

belzandriy,

No!
this will cause a shotr circuit when the relay is at NC
The common is correct 24v into the relay but you will need to wire the NO, and NC to Digital inputs (DIO#)
when the relay switches it will pass 24v through the relay and back onto one of the DIO’s

Hope this helps!

3

The common, with how they have it set up, is going to the Digital Input so it should not cause a short. The two connections would be 24V → DI2 when open and 0V → DI2 when closed.

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4

So both wires for the NO and NC go the DI2 pin in my case?

5

That’s how I interpreted what the creator of the video was doing with his set-up.

6

So would this work? and not damage the UR?

7

It should be fine but I believe you could also just leave the Normally closed as disconnected as the input should go low when left floating. You would only need two wires then.

8

Do you have any idea how this would work with analog signal from the arduino?

9

Untitled Sketch 2_bb
Untitled Sketch 2_bb1920×924 111 KB

Will this setup work, to recive and send signals from UR5e to my Arduino??

i know only single channel relay is enough.

Please, inform if its right.

Thanks.

10

I think the setup presented on the Youtube video is a relay connected to 2 voltage dividers and it might have some diode to avoid the shortcut, but I think the wiring despite working is a bad praxis in general.

For exchange I/O with the UR I would use an optocoupler and a DC/DC converter instead of a relay, so the robot and the Arduino voltages get separated.

image

11

@mcqueendabozyboi - There’s no simple way to do this. You will need an OPAMP and preferably a DAC to get a true analog signal.

12

@anirudhgowdat - If the voltage divider makes 5V, then yes. It should work.

I would however get a 24V relay on the Digital Output 3 from the robot instead. Or octocoupler as mentioned by cgs.

Then it’s very simple to connect Digital Output 3 to A+ on the relay and 0V to A-. And then you can wire the Arduino Vin/5V to COM and a digital input to NO. Then it works just like the relay board between the Arduino and UR already there.

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