Hi @RaiedKassab,
UR e-Series robot models do actually have an embedded Force-Torque sensor in their wrist.
It is possible that an internal connection in the robot has failed during its storage period, making the connection to the FT-sensor impossible.
Historically, it could be solved by replacing the wrist of the robot, but I would highly suggest contacting UR's support so they can advise on the best solution for you.
Hope this helps.
![](https://storage.googleapis.com/robotiq-dof-uploads/userpics/797/nZ9PDFQZV3KZW.png)
You could also share an picture of the error message. That may help to understand the situation.
![](https://storage.googleapis.com/robotiq-dof-uploads/defaultavatar/nELI41VX3IXXZ.jpg)
Her is the error:
We've had a one UR5e fail with a C450C4 Error about a missing Force-Torque sensor in the last week.
Tried to restart the robot with no effect.
We upgraded the robot to 5.11 with no changes.
All connections have ben cheeked.
Note:
The robot is equipped with Robotiq 2F-85 & Wrist Camera.
There is no FT 300-S Force Torque Sensor in this robot!!
The robot was turned off for more than 9 months, and the system was fully functional before shutting down it.