# Electrical connection of the controller - how to?

**URL:** https://forum.universal-robots.com/t/electrical-connection-of-the-controller-how-to/39220
**Category:** Technical Questions
**Created:** [March 24, 2025, 7:22am UTC](https://forum.universal-robots.com/t/electrical-connection-of-the-controller-how-to/39220 "2025-03-24T07:22:34Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![robert.huels](https://avatars.discourse-cdn.com/v4/letter/r/f17d59/32.png) [@robert.huels](https://forum.universal-robots.com/u/robert.huels)
#### Post date: [March 24, 2025, 7:22am UTC](https://forum.universal-robots.com/t/electrical-connection-of-the-controller-how-to/39220/1 "2025-03-24T07:22:34Z")

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Hello everyone,

our company has purchased a used UR10 from a machine dealer. My colleagues and I are supposed to set up a test track. But first, we need to make the robot operational.

Our problems are as follows:

1. Unfortunately, the robot only comes with the controller. A control cabinet is missing. The power supply that leads to the controller is also missing. There should be a power line with a socket/IEC connector. Our electrician is willing to create something himself, but he is unsure where exactly to connect the wires. Perhaps you could provide some advice. I have taken photos to illustrate the situation better.

2. There is a red connector on the cable of the panel - see the picture. Where does this plug in?

 ![IMG_0919](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/1/1d57388b8a47675c10c19e6d48df01da7a167240.jpeg)  
 ![IMG_0920](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/8/870bc9589755239e3783c95d9ee25b8d34d38394.jpeg)  
 ![IMG_0921](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/3/382af257d9d61272d4e4161ffca62bfc9ad16016.jpeg)

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### Author: ![efn](https://avatars.discourse-cdn.com/v4/letter/e/35a633/32.png) [@efn](https://forum.universal-robots.com/u/efn)
#### Post date: [March 24, 2025, 7:44am UTC](https://forum.universal-robots.com/t/electrical-connection-of-the-controller-how-to/39220/2 "2025-03-24T07:44:58Z")

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Here’s the electrical diagram for the controller. It’s really fairly simple - just connect your supply to the Current Distributor (small PCB to the left of the PSUs on your 2nd image).

 ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/b/bb97e6855f213ca5632939597468aca54a6113e8.png)

The red connector connects to RS485/12V on the Safety Control Board.

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### Author: ![robert.huels](https://avatars.discourse-cdn.com/v4/letter/r/f17d59/32.png) [@robert.huels](https://forum.universal-robots.com/u/robert.huels)
#### Post date: [March 31, 2025, 5:00am UTC](https://forum.universal-robots.com/t/electrical-connection-of-the-controller-how-to/39220/3 "2025-03-31T05:00:51Z")

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Thank you very much for the hints.